CN112167335A - Processing technology for improving easy cracking of rice in storage environment - Google Patents
Processing technology for improving easy cracking of rice in storage environment Download PDFInfo
- Publication number
- CN112167335A CN112167335A CN202011089920.7A CN202011089920A CN112167335A CN 112167335 A CN112167335 A CN 112167335A CN 202011089920 A CN202011089920 A CN 202011089920A CN 112167335 A CN112167335 A CN 112167335A
- Authority
- CN
- China
- Prior art keywords
- rice
- expanded vermiculite
- ethanol
- mass
- chitosan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 235000007164 Oryza sativa Nutrition 0.000 title claims abstract description 115
- 235000009566 rice Nutrition 0.000 title claims abstract description 115
- 238000012545 processing Methods 0.000 title claims abstract description 35
- 238000003860 storage Methods 0.000 title claims abstract description 28
- 238000005516 engineering process Methods 0.000 title claims abstract description 27
- 238000005336 cracking Methods 0.000 title claims description 23
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 114
- 239000010455 vermiculite Substances 0.000 claims abstract description 68
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 68
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 68
- 239000011248 coating agent Substances 0.000 claims abstract description 60
- 238000000576 coating method Methods 0.000 claims abstract description 60
- 239000000843 powder Substances 0.000 claims abstract description 57
- 229920001661 Chitosan Polymers 0.000 claims abstract description 54
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 51
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 51
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 51
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 41
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000002088 nanocapsule Substances 0.000 claims abstract description 36
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000002070 nanowire Substances 0.000 claims abstract description 20
- 230000008569 process Effects 0.000 claims abstract description 18
- 238000001291 vacuum drying Methods 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 123
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 62
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 48
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- 235000019441 ethanol Nutrition 0.000 claims description 39
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- 239000008367 deionised water Substances 0.000 claims description 21
- 229910021641 deionized water Inorganic materials 0.000 claims description 21
- 239000012153 distilled water Substances 0.000 claims description 21
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 18
- 238000005303 weighing Methods 0.000 claims description 18
- 239000002202 Polyethylene glycol Substances 0.000 claims description 17
- 229920001223 polyethylene glycol Polymers 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 16
- 238000002791 soaking Methods 0.000 claims description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 13
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 229940099596 manganese sulfate Drugs 0.000 claims description 10
- 239000011702 manganese sulphate Substances 0.000 claims description 10
- 235000007079 manganese sulphate Nutrition 0.000 claims description 10
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 claims description 10
- 235000011056 potassium acetate Nutrition 0.000 claims description 10
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 claims description 10
- 238000003672 processing method Methods 0.000 claims description 8
- IZRJPHXTEXTLHY-UHFFFAOYSA-N triethoxy(2-triethoxysilylethyl)silane Chemical compound CCO[Si](OCC)(OCC)CC[Si](OCC)(OCC)OCC IZRJPHXTEXTLHY-UHFFFAOYSA-N 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 238000010992 reflux Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 235000013339 cereals Nutrition 0.000 abstract description 19
- 238000010521 absorption reaction Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000707 layer-by-layer assembly Methods 0.000 abstract description 2
- 238000009501 film coating Methods 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- 239000002775 capsule Substances 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000005411 Van der Waals force Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004530 micro-emulsion Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/14—Coating with a protective layer; Compositions or apparatus therefor
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/16—Preserving with chemicals
- A23B9/24—Preserving with chemicals in the form of liquids or solids
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/16—Preserving with chemicals
- A23B9/24—Preserving with chemicals in the form of liquids or solids
- A23B9/26—Organic compounds; Microorganisms; Enzymes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/16—Preserving with chemicals
- A23B9/24—Preserving with chemicals in the form of liquids or solids
- A23B9/30—Inorganic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y40/00—Manufacture or treatment of nanostructures
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/02—Oxides; Hydroxides
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C01P2004/16—Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
Abstract
The invention discloses a processing technology for improving the possibility of generating cracks on rice in a storage environment, and relates to the technical field of rice processing, wherein the processing technology comprises the following specific steps: 1) preparing hollow mesoporous organic silicon oxide nanocapsules; 2) processing to obtain manganese dioxide nanowires; 3) processing the expanded vermiculite; 4) the preparation method comprises the steps of introducing hollow mesoporous organic silicon oxide nanocapsules and modified expanded vermiculite powder into a chitosan solution and a sodium carboxymethyl cellulose solution to prepare two coating solutions, alternately immersing rice into the two coating solutions to carry out coating, and carrying out vacuum drying. According to the invention, the alternating thin film coatings are formed on the surfaces of the rice through electrostatic self-assembly, so that the aggravation of uneven expansion caused by moisture absorption in the rice grains is reduced, the generation of cracks in the rice grains is reduced, the process of the moisture absorption cracks of the rice is slowed down, the generation rate of the cracks of the rice is reduced, the technical effect of reducing the generation rate of the cracks in the rice is realized, and the quality of the rice is improved.
Description
Technical Field
The invention belongs to the technical field of rice processing, and particularly relates to a processing technology for improving the possibility of rice cracks in a storage environment.
Background
In recent years, the living standard of people in China is steadily improved, foreign high-quality rice continuously floods the Chinese market, however, the international market share of the domestic rice is gradually reduced, and people are prompted to pay great attention to the quality problem of paddy in China. The quality of the rice is a comprehensive concept with rich connotation, and comprises a plurality of indexes in aspects of sanitation, processing, appearance, cooking, taste, nutrition and the like, whether the rice grains crack or not directly or indirectly influences the quality indexes, and the systematic research on the possible cracking phenomenon of the rice in the storage process is necessary in consideration of the importance of the storage and transportation links in the grain industry chain.
The generation of the rice cracking is caused by the change of the local stress balance of grains, and the local stress exceeds the tensile strength limit of the corresponding part. It is known that the thermal and moisture stresses and mechanical loads acting on the grains of rice during storage and transportation can cause cracking of the rice, however, not all cracked grains are without vitality, nutritional value and milling quality, and problems can only occur with respect to the quality of the rice in the case of severe damage to the grains. The rice is a biological material and has a complex internal structure, the state of stress acting on the rice is usually extremely complex, and the propagation form of the rice cracks generated by the action of damp heat stress or mechanical load under different storage and transportation conditions is varied. Obviously, the irregularity degree of crack propagation directly influences the damage degree of grains, the surface of the initial research is that the form of crack propagation is restricted by a certain feedback effect, the more obvious the fractal effect is, the lower the irregularity degree of grain crack propagation is.
At home and abroad, a plurality of reports are provided on the research results of the unit rice crack generation mechanism, a small number of reports are provided on the expansion characteristic of the rice crack, and the rice crack can generate cracks in the field and harvest transportation, so the research on the rice crack in the storage environment focuses on the analysis of the expansion mechanism. The research on the generation and expansion mechanism of the rice cracks in the storage environment has important practical significance on the safety of rice storage, the improvement of the processing quality of rice and the edible quality of processed products thereof and the enhancement of the market competitiveness of rice in China. Therefore, how to reduce the crack generation rate of the rice in the storage environment has important significance for improving the quality of the rice.
Disclosure of Invention
The invention aims to provide a processing technology for improving the easy generation of cracks of rice in a storage environment aiming at the existing problems.
The invention is realized by the following technical scheme:
a processing technology for improving the easy crack generation of rice in a storage environment comprises the following specific processing methods:
1) according to the mass volume ratio of 20-25mg:0.8-1.0ml:0.12-0.15ml:8-10ml:0.08-0.09ml of hexadecyl trimethyl ammonium bromide, anhydrous ethanol, octane, distilled water and sodium hydroxide, the weighed hexadecyl trimethyl ammonium bromide, ethanol, octane, distilled water and 1-1.3mol/L sodium hydroxide are added into a container and uniformly stirred, the mixture is stirred for 10-20min under the conditions of 35-40 ℃ water bath and 300-400rpm, then according to 1.5-2% of the total volume of a reaction system, mixed liquid consisting of 70-80% of ethanol and 1, 2-bis (triethoxysilyl) ethane according to the volume ratio of 5-6:2 is added, the reaction is carried out for 3-4h, products are centrifugally collected after the reaction is finished, dispersing the collected product into an ethanol solution with the mass concentration of 70-80% according to the mass volume ratio of 1:60-80g/ml, adding concentrated hydrochloric acid with the concentration of 12-15mol/L according to 0.2-0.4% of the volume of the ethanol, carrying out reflux treatment at 80-85 ℃ for 6-7h, repeatedly cleaning the product with ethanol, and drying to obtain the hollow mesoporous organic silicon oxide nanocapsule; in the invention, the microemulsion of alkane is used as an oil phase template, 1, 2-bis (triethoxysilyl) ethane is used as a silicon source, sodium hydroxide is used as an alkaline catalyst, a one-step method is adopted to synthesize the permeable hollow mesoporous organic silica gel capsule with an ultrathin shell, the organic silica gel capsule has the properties of hydrophilic outer surface and hydrophobic inner surface, the organic silica gel capsule is introduced into a coating liquid, the hydrophilic outer surface can be uniformly dispersed in the coating liquid, the organic silica gel capsule is favorable for forming a uniform coating layer on the surface of paddy, and the inner surface of the hollow structure has the hydrophobic property, so that the function of blocking the penetration of water can be realized, the water is not easy to penetrate into the paddy through the organic silica gel capsule layer, the aggravation of the uneven expansion of the interior of grains caused by moisture absorption in the grains is reduced, and the generation of cracks in the grains is reduced, the effect of reducing the generation rate of cracks is realized;
2) dissolving weighed manganese sulfate, potassium chlorate and potassium acetate in deionized water according to the mass volume ratio of 1g:1.2-1.4g:1-1.1g:85-90ml of manganese sulfate, potassium chlorate and potassium acetate in deionized water, adding an acetic acid solution with the mass concentration of 2-5% according to 5-7% of the volume of the deionized water after the solution is clarified, continuously stirring for 5-10min at 80-120r/min, then placing the solution into a reaction kettle, reacting for 12-14h at 170 ℃ of 160-;
3) dispersing manganese dioxide nanowires in molten polyethylene glycol according to the mass ratio of expanded vermiculite powder to polyethylene glycol to manganese dioxide nanowires of 1:2.3-2.7:0.25-0.85, stirring at 70-80 ℃ for 10-13h at 60-80r/min, adding the expanded vermiculite powder into the mixture, keeping at 65-70 ℃ for 10-15h, transferring the soaked expanded vermiculite powder onto filter paper, then placing the filter paper in a drying box at 70-75 ℃ for treatment, continuously replacing the filter paper in the treatment process until no leakage trace is observed, taking out the product, and cooling to room temperature to obtain modified expanded vermiculite powder with the particle size of 50-80 mu m; according to the invention, under the action of capillary force and surface tension, polyethylene glycol and manganese dioxide nanowires are immersed in pores of expanded vermiculite, and the manganese dioxide nanowires immersed in the pores of the expanded vermiculite are mutually overlapped to form a net structure, so that leakage of the polyethylene glycol in the phase change process of melting and solidification is limited, and the stability of the modified expanded vermiculite form is improved; the modified vermiculite is introduced into the coating liquid, the modified vermiculite can form a coating layer on the surface of the rice, the temperature of the rice inside the rice is high due to poor air fluidity in the storage process of the rice, the polyethylene glycol immersed in the modified vermiculite can generate phase change behavior, and a solid-liquid phase change process occurs, so that heat in a rice accumulation layer can be absorbed to realize energy storage, and the temperature in the rice accumulation layer is reduced, and the influence of temperature and humidity on the moisture absorption of the rice surface boundary only depends on the size of the intermolecular force-van der Waals force of the temperature and humidity, the van der Waals force is increased along with the reduction of the temperature, the moisture absorption power of the rice outer boundary is improved, so that the moisture absorption process of the rice surface boundary is improved, and the moisture diffusion capacity is reduced to slow down the moisture transfer to the core of grains along with the improvement of the water vapor adsorption capacity of the rice, in a long-time moisture absorption process, the capillary condensation effect is still weakened, so that the process of generating moisture absorption cracks of the rice is slowed down, and the generation rate of the rice cracks is reduced;
4) weighing a proper amount of chitosan, adding the chitosan into an acetic acid solution with the volume concentration of 1-2%, uniformly stirring, adding a proper amount of hollow mesoporous organic silicon oxide nano capsules and modified expanded vermiculite powder, uniformly mixing to prepare a chitosan coating solution with the mass content of chitosan of 1.5-2.5%, and the mass content of the hollow mesoporous organic silicon oxide nano capsules and the mass content of the modified expanded vermiculite powder of 0.2-0.4% and 0.3-0.5%, for later use, weighing a proper amount of sodium carboxymethylcellulose, adding the sodium carboxymethylcellulose into distilled water to fully swell, then adding a proper amount of hollow mesoporous organic silicon oxide nano capsules and the modified expanded vermiculite powder, uniformly mixing to prepare a sodium carboxymethylcellulose coating solution with the mass content of 1.5-2.5%, and the mass content of the hollow mesoporous organic silicon oxide nano capsules and the modified expanded vermiculite powder of 0.1-0.3% and 0.2-0.4%, soaking the screened and impurity-removed rice in a chitosan coating solution for 2-3min, taking out, naturally airing at room temperature, then soaking in a sodium carboxymethylcellulose coating solution for 2-3min, airing at room temperature, alternately coating for 3-4 times according to the sequence of chitosan/sodium carboxymethylcellulose, and performing vacuum drying until the water content is 11-14%, thus finishing the processing technology of the rice; according to the invention, the chitosan solution and the sodium carboxymethyl cellulose solution are used as coating solvents, and the chitosan coating solution and the sodium carboxymethyl cellulose coating solution can be fully coated on the surface of the rice under the action of electrostatic attraction by utilizing opposite charges between the chitosan solution and the sodium carboxymethyl cellulose solution, so that the coating effect on the surface of the rice is improved, and the coating of the organic silicon oxide nanocapsule and the modified expanded vermiculite on the surface of the rice is realized.
Compared with the prior art, the invention has the following advantages:
aiming at the technical problem that the quality of the rice is reduced because the rice is easy to crack in the storage process in the prior art, the invention introduces the organic silicon oxide nanocapsules and the modified expanded vermiculite into the chitosan coating liquid and the sodium carboxymethyl cellulose coating liquid, forms the electrostatic self-assembly multilayer film on the surface of the rice by utilizing the electrostatic action, and the organic silicon oxide nanocapsules introduced into the film can play a role in blocking the penetration of water, so that the water is difficult to penetrate into the rice through the organic silicon oxide nanocapsules, thereby reducing the aggravation of the uneven expansion inside the grains caused by the moisture absorption inside the grains, and reducing the generation of cracks in the grains; the introduced modified expanded vermiculite can reduce the temperature in the rice accumulation layer, so that the process of generating moisture absorption cracks of rice is slowed down, the generation rate of the rice cracks is reduced, the technical effect of reducing the generation rate of the cracks in the rice is realized, and the quality of the rice is improved.
Detailed Description
The present invention will be further described with reference to specific embodiments.
Example 1
A processing technology for improving the easy crack generation of rice in a storage environment comprises the following specific processing methods:
1) according to the mass volume ratio of 20mg:0.8ml:0.12ml:8ml:0.08ml of hexadecyl trimethyl ammonium bromide, anhydrous ethanol, octane, distilled water and sodium hydroxide, the weighed hexadecyl trimethyl ammonium bromide, ethanol, octane, distilled water and sodium hydroxide with the concentration of 1mol/L are added into a container to be uniformly stirred, the mixture is stirred for 10min under the conditions of 35 ℃ water bath and 300rpm, then mixed liquid consisting of ethanol with the mass concentration of 70% and 1, 2-bis (triethoxysilyl) ethane with the volume ratio of 5:2 is added according to 1.5 percent of the total volume of a reaction system to react for 3h, products are centrifugally collected after the reaction is finished, the collected products are dispersed into ethanol solution with the mass concentration of 70% according to the mass volume ratio of 1:60g/ml, concentrated hydrochloric acid with the concentration of 12mol/L is added according to 0.2 percent of the volume of ethanol, performing reflux treatment at 80 ℃ for 6 hours, repeatedly cleaning the product with ethanol, and drying to obtain a hollow mesoporous organic silicon oxide nano capsule;
2) dissolving weighed manganese sulfate, potassium chlorate and potassium acetate in deionized water according to the mass-volume ratio of 1g to 1.2g to 1g to 85ml, adding an acetic acid solution with the mass concentration of 2% according to 5% of the volume of the deionized water after the solution is clarified, continuously stirring for 5min at 80r/min, then putting the solution into a reaction kettle, reacting for 12h at 160 ℃, cooling to room temperature after the reaction is finished, alternately washing with deionized water and ethanol until the product is neutral, and then putting the product into a 60 ℃ oven to dry to constant weight to obtain manganese dioxide nanowires;
3) dispersing manganese dioxide nanowires in molten polyethylene glycol according to the mass ratio of expanded vermiculite powder to polyethylene glycol to manganese dioxide nanowires of 1:2.3:0.25, stirring at 70 ℃ for 10 hours at 60r/min, adding the expanded vermiculite powder to the mixture, keeping at 65 ℃ for 10 hours, transferring the impregnated expanded vermiculite powder to filter paper, then placing the filter paper in a drying box at 70 ℃ for treatment, continuously replacing the filter paper in the treatment process until no leakage trace is observed, taking out the product, and cooling to room temperature to obtain modified expanded vermiculite powder with the particle size of 50 microns;
4) weighing a proper amount of chitosan, adding the chitosan into an acetic acid solution with the volume concentration of 1%, uniformly stirring, adding a proper amount of hollow mesoporous organic silicon oxide nano capsules and modified expanded vermiculite powder, uniformly mixing to prepare a chitosan coating solution with the mass content of chitosan being 1.5%, and the mass contents of the hollow mesoporous organic silicon oxide nano capsules and the modified expanded vermiculite powder being 0.2% and 0.3%, respectively, for standby, weighing a proper amount of sodium carboxymethylcellulose, adding the sodium carboxymethylcellulose coating solution into distilled water to fully swell, then adding a proper amount of the hollow mesoporous organic silicon oxide nano capsules and the modified expanded vermiculite powder, uniformly mixing to prepare the sodium carboxymethylcellulose coating solution with the mass content of 1.5%, and the sodium carboxymethylcellulose coating solution with the mass contents of the hollow mesoporous organic silicon oxide nano capsules and the modified expanded vermiculite powder being 0.1% and 0.2%, for standby, immersing the screened and impurity-removed paddy into the chitosan coating solution for soaking for 2min, taking out, naturally airing at room temperature, then soaking in the coating liquid of sodium carboxymethyl cellulose for 2min, airing at room temperature, alternately coating for 3 times according to the sequence of chitosan/sodium carboxymethyl cellulose, and performing vacuum drying until the water content is 11% to complete the processing technology of the rice.
Example 2
A processing technology for improving the easy crack generation of rice in a storage environment comprises the following specific processing methods:
1) according to the mass volume ratio of 23mg to 0.9ml to 0.13ml to 9ml to 0.08ml of hexadecyl trimethyl ammonium bromide, anhydrous ethanol, octane, distilled water and sodium hydroxide, adding the weighed hexadecyl trimethyl ammonium bromide, ethanol, octane, distilled water and sodium hydroxide with the concentration of 1.2mol/L into a container, uniformly stirring the mixture in a 38 ℃ water bath at the speed of 350rpm for 15min, then adding a mixed liquid consisting of ethanol with the mass concentration of 75% and 1, 2-bis (triethoxysilyl) ethane with the volume ratio of 5.5 to 2 according to 1.8 percent of the total volume of a reaction system, reacting for 3.5h, centrifugally collecting a product after the reaction is finished, dispersing the collected product in an ethanol solution with the mass concentration of 75% according to the mass volume ratio of 1:70g/ml, adding concentrated hydrochloric acid with the concentration of 13mol/L according to 0.3 percent of the volume of the ethanol, carrying out reflux treatment at 82 ℃ for 6.5h, repeatedly cleaning the product with ethanol, and drying to obtain a hollow mesoporous organic silicon oxide nano capsule;
2) dissolving weighed manganese sulfate, potassium chlorate and potassium acetate in deionized water according to the mass-volume ratio of 1g to 1.3g to 1.1g to 88ml of manganese sulfate, potassium chlorate and potassium acetate in the deionized water, adding an acetic acid solution with the mass concentration of 4% according to 6% of the volume of the deionized water after the solution is clarified, continuously stirring for 7min at the speed of 100r/min, then placing the solution into a reaction kettle, reacting for 13h at 165 ℃, cooling to room temperature after the reaction is finished, alternately washing the product with the deionized water and ethanol until the product is neutral, and then placing the product into a 65 ℃ oven to dry the product to constant weight to obtain manganese dioxide nanowires;
3) dispersing manganese dioxide nanowires in molten polyethylene glycol according to the mass ratio of expanded vermiculite powder to polyethylene glycol to manganese dioxide nanowires of 1:2.5:0.55, stirring at 75 ℃ for 12h at 70r/min, adding the expanded vermiculite powder to the mixture, keeping at 68 ℃ for 13h, transferring the impregnated expanded vermiculite powder to filter paper, then placing the filter paper in a 72 ℃ drying box for treatment, continuously replacing the filter paper in the treatment process until no leakage trace is observed, taking out the product, and cooling to room temperature to obtain modified expanded vermiculite powder with the particle size of 60 mu m;
4) weighing a proper amount of chitosan, adding the chitosan into an acetic acid solution with the volume concentration of 1.5%, uniformly stirring, adding a proper amount of hollow mesoporous organic silicon oxide nanocapsules and modified expanded vermiculite powder, uniformly mixing to prepare a chitosan coating solution with the mass content of chitosan being 2.0%, and the mass contents of the hollow mesoporous organic silicon oxide nanocapsules and the modified expanded vermiculite powder being 0.3% and 0.4% respectively, for standby, weighing a proper amount of sodium carboxymethylcellulose, adding the sodium carboxymethylcellulose into distilled water to fully swell, then adding a proper amount of hollow mesoporous organic silicon oxide nanocapsules and the modified expanded vermiculite powder, uniformly mixing to prepare a sodium carboxymethylcellulose coating solution with the mass content of 2.0%, and the mass contents of the hollow mesoporous organic silicon oxide nanocapsules and the modified expanded vermiculite powder being 0.2% and 0.3% respectively, for standby, soaking the screened and impurity-removed rice in the chitosan coating solution for 3min, taking out, naturally airing at room temperature, then soaking in the coating liquid of sodium carboxymethyl cellulose for 3min, airing at room temperature, alternately coating for 3 times according to the sequence of chitosan/sodium carboxymethyl cellulose, and performing vacuum drying until the water content is 12% to complete the processing technology of the rice.
Example 3
A processing technology for improving the easy crack generation of rice in a storage environment comprises the following specific processing methods:
1) according to the mass volume ratio of 25mg to 1.0ml to 0.15ml to 10ml to 0.09ml of cetyl trimethyl ammonium bromide, 10ml to 0.09ml of absolute ethyl alcohol, octane, distilled water and sodium hydroxide, the weighed cetyl trimethyl ammonium bromide, the ethanol, the octane, the distilled water and the sodium hydroxide with the concentration of 1.3mol/L are added into a container to be uniformly stirred, the mixture is stirred for 20min under the conditions of 40 ℃ water bath and 400rpm, then mixed liquid consisting of 80 percent by mass of ethanol and 1, 2-bis (triethoxysilyl) ethane with the volume ratio of 6:2 is added according to 2 percent of the total volume of a reaction system to react for 4h, products are centrifugally collected after the reaction is finished, the collected products are dispersed into 80 percent by mass of ethanol solution according to the mass volume ratio of 1:80g/ml, concentrated hydrochloric acid with the concentration of 15mol/L is added according to 0.4 percent of the volume of the ethanol, carrying out reflux treatment at 85 ℃ for 7h, repeatedly cleaning the product with ethanol, and drying to obtain a hollow mesoporous organic silicon oxide nano capsule;
2) dissolving weighed manganese sulfate, potassium chlorate and potassium acetate in deionized water according to the mass-volume ratio of 1g to 1.4g to 1.1g to 90ml of manganese sulfate, potassium chlorate and potassium acetate in the deionized water, adding an acetic acid solution with the mass concentration of 5% according to 7% of the volume of the deionized water after the solution is clarified, continuously stirring for 10min at 120r/min, then placing the solution into a reaction kettle, reacting for 14h at 170 ℃, cooling to room temperature after the reaction is finished, alternately washing the product with deionized water and ethanol until the product is neutral, and then placing the product into a 70 ℃ oven to dry the product to constant weight to obtain manganese dioxide nanowires;
3) dispersing manganese dioxide nanowires in molten polyethylene glycol according to the mass ratio of expanded vermiculite powder to polyethylene glycol to manganese dioxide nanowires of 1:2.7:0.85, stirring at 80 ℃ for 13h at 80r/min, adding the expanded vermiculite powder to the mixture, keeping at 70 ℃ for 15h, transferring the impregnated expanded vermiculite powder to filter paper, then placing the filter paper in a 75 ℃ drying box for treatment, continuously replacing the filter paper in the treatment process until no leakage trace is observed, taking out the product, and cooling to room temperature to obtain modified expanded vermiculite powder with the particle size of 80 microns;
4) weighing a proper amount of chitosan, adding the chitosan into an acetic acid solution with the volume concentration of 2%, uniformly stirring, adding a proper amount of hollow mesoporous organic silicon oxide nano capsules and modified expanded vermiculite powder, uniformly mixing to prepare a chitosan coating solution with the mass content of chitosan of 2.5%, respectively, the mass contents of the hollow mesoporous organic silicon oxide nano capsules and the modified expanded vermiculite powder of 0.4% and 0.5%, for later use, weighing a proper amount of sodium carboxymethylcellulose, adding the sodium carboxymethylcellulose coating solution into distilled water to fully swell, then adding a proper amount of hollow mesoporous organic silicon oxide nano capsules and the modified expanded vermiculite powder, uniformly mixing to prepare the sodium carboxymethylcellulose coating solution with the mass content of 2.5%, respectively, the mass contents of the hollow mesoporous organic silicon oxide nano capsules and the modified expanded vermiculite powder of 0.3% and 0.4%, for later use, immersing the screened and impurity-removed paddy into the chitosan coating solution, soaking for 3min, taking out, naturally airing at room temperature, then soaking in the coating liquid of sodium carboxymethyl cellulose for 3min, airing at room temperature, alternately coating for 4 times according to the sequence of chitosan/sodium carboxymethyl cellulose, and performing vacuum drying until the water content is 14% to complete the processing technology of the rice.
Comparative example 1
A processing technology for improving the easy crack generation of rice in a storage environment comprises the following specific processing methods:
1) according to the mass volume ratio of 20mg:0.8ml:0.12ml:8ml:0.08ml of hexadecyl trimethyl ammonium bromide, anhydrous ethanol, octane, distilled water and sodium hydroxide, the weighed hexadecyl trimethyl ammonium bromide, ethanol, octane, distilled water and sodium hydroxide with the concentration of 1mol/L are added into a container to be uniformly stirred, the mixture is stirred for 10min under the conditions of 35 ℃ water bath and 300rpm, then mixed liquid consisting of ethanol with the mass concentration of 70% and 1, 2-bis (triethoxysilyl) ethane with the volume ratio of 5:2 is added according to 1.5 percent of the total volume of a reaction system to react for 3h, products are centrifugally collected after the reaction is finished, the collected products are dispersed into ethanol solution with the mass concentration of 70% according to the mass volume ratio of 1:60g/ml, concentrated hydrochloric acid with the concentration of 12mol/L is added according to 0.2 percent of the volume of ethanol, performing reflux treatment at 80 ℃ for 6 hours, repeatedly cleaning the product with ethanol, and drying to obtain a hollow mesoporous organic silicon oxide nano capsule;
2) weighing a proper amount of chitosan, adding the chitosan into an acetic acid solution with the volume concentration of 1%, uniformly stirring, adding a proper amount of hollow mesoporous organic silicon oxide nanocapsules, uniformly mixing to prepare a chitosan coating solution with the mass content of chitosan of 1.5% and the mass content of hollow mesoporous organic silicon oxide nanocapsules of 0.2%, weighing a proper amount of sodium carboxymethylcellulose, adding the sodium carboxymethylcellulose into distilled water for fully swelling, then adding a proper amount of hollow mesoporous organic silicon oxide nanocapsules, uniformly mixing to prepare a sodium carboxymethylcellulose coating solution with the mass content of sodium carboxymethylcellulose of 1.5% and the mass content of hollow mesoporous organic silicon oxide nanocapsules of 0.1%, for standby, soaking the screened and impurity-removed rice in the chitosan coating solution for 2min, taking out, naturally airing at room temperature, then soaking in the sodium carboxymethylcellulose coating solution for 2min, and (3) airing at room temperature, alternately coating for 3 times according to the sequence of chitosan/sodium carboxymethyl cellulose, and performing vacuum drying until the water content is 11% to finish the processing technology of the rice.
Comparative example 2
A processing technology for improving the easy crack generation of rice in a storage environment comprises the following specific processing methods:
1) dissolving weighed manganese sulfate, potassium chlorate and potassium acetate in deionized water according to the mass-volume ratio of 1g to 1.2g to 1g to 85ml, adding an acetic acid solution with the mass concentration of 2% according to 5% of the volume of the deionized water after the solution is clarified, continuously stirring for 5min at 80r/min, then putting the solution into a reaction kettle, reacting for 12h at 160 ℃, cooling to room temperature after the reaction is finished, alternately washing with deionized water and ethanol until the product is neutral, and then putting the product into a 60 ℃ oven to dry to constant weight to obtain manganese dioxide nanowires;
2) dispersing manganese dioxide nanowires in molten polyethylene glycol according to the mass ratio of expanded vermiculite powder to polyethylene glycol to manganese dioxide nanowires of 1:2.3:0.25, stirring at 70 ℃ for 10 hours at 60r/min, adding the expanded vermiculite powder to the mixture, keeping at 65 ℃ for 10 hours, transferring the impregnated expanded vermiculite powder to filter paper, then placing the filter paper in a drying box at 70 ℃ for treatment, continuously replacing the filter paper in the treatment process until no leakage trace is observed, taking out the product, and cooling to room temperature to obtain modified expanded vermiculite powder with the particle size of 50 microns;
3) weighing a proper amount of chitosan, adding the chitosan into an acetic acid solution with the volume concentration of 1%, uniformly stirring, adding a proper amount of modified expanded vermiculite powder, uniformly mixing to prepare a chitosan coating solution with the mass content of 1.5% of chitosan and the mass content of 0.3% of modified expanded vermiculite powder, for standby, weighing a proper amount of sodium carboxymethylcellulose, adding the sodium carboxymethylcellulose coating solution into distilled water to fully swell, then adding a proper amount of modified expanded vermiculite powder, uniformly mixing to prepare the sodium carboxymethylcellulose coating solution with the mass content of 1.5% of sodium carboxymethylcellulose and the mass content of 0.2% of modified expanded vermiculite powder, for standby, soaking the screened and impurity-removed rice in the chitosan coating solution for 2min, taking out, naturally airing at room temperature, then soaking in the sodium carboxymethylcellulose coating solution for 2min, airing at room temperature, alternately coating for 3 times according to the sequence of chitosan/sodium carboxymethylcellulose, and (5) performing vacuum drying until the water content is 11%, thus finishing the processing technology of the rice.
Comparative example 3
A processing technology for improving the easy crack generation of rice in a storage environment comprises the following specific processing methods:
1) adding expanded vermiculite powder into molten polyethylene glycol according to the mass ratio of the expanded vermiculite powder to the polyethylene glycol of 1:2.3, keeping the mixture at 70 ℃ for 10 hours, transferring the soaked expanded vermiculite powder onto filter paper, then placing the filter paper in a drying box at 70 ℃ for treatment, continuously replacing the filter paper in the treatment process until no leakage trace is observed, taking out a product, and cooling the product to room temperature to obtain modified expanded vermiculite powder with the particle size of 50 microns;
2) weighing a proper amount of chitosan, adding the chitosan into an acetic acid solution with the volume concentration of 1%, uniformly stirring, adding a proper amount of modified expanded vermiculite powder, uniformly mixing to prepare a chitosan coating solution with the mass content of 1.5% of chitosan and the mass content of 0.3% of modified expanded vermiculite powder, for standby, weighing a proper amount of sodium carboxymethylcellulose, adding the sodium carboxymethylcellulose coating solution into distilled water to fully swell, then adding a proper amount of modified expanded vermiculite powder, uniformly mixing to prepare the sodium carboxymethylcellulose coating solution with the mass content of 1.5% of sodium carboxymethylcellulose and the mass content of 0.2% of modified expanded vermiculite powder, for standby, soaking the screened and impurity-removed rice in the chitosan coating solution for 2min, taking out, naturally airing at room temperature, then soaking in the sodium carboxymethylcellulose coating solution for 2min, airing at room temperature, alternately coating for 3 times according to the sequence of chitosan/sodium carboxymethylcellulose, and (5) performing vacuum drying until the water content is 11%, thus finishing the processing technology of the rice.
The experimental method comprises the following steps:
1. placing in a drier at room temperature (25 deg.C), absorbing moisture with phosphorus pentoxide to relative humidity of 70%, sealing in a glass bottle, storing at 30 deg.C for 2h, selecting commercially available polished rice (polished rice is selected instead of rice, so as to more intuitively observe cracks formed in rice grains), processing the polished rice by the methods provided in examples 1-3 and comparative examples 1-3, and performing no treatment on the polished rice provided in the control group, wherein each polished rice sample provided by the methods comprises three parallel tests (500 samples per group), placing the polished rice sample in the sealed glass bottle, measuring relative humidity value in the glass bottle, adjusting by water spray wetting or phosphorus pentoxide moisture absorption to relative humidity of 70%, storing at 30 deg.C and 70% for 5h, the polished rice sample is taken out, the crack rate is detected by adopting a lamp box method (the lamp box consists of a dark box with a transparent glass top plate and an internal light source, and the cracks of the rice grains are in the phenomenon of light and shade alternation under a spotlight), and the result is as follows: the polished rice of example 1 had a cracking rate of 22.2%; the polished rice of example 2 had a cracking rate of 20.6%; the polished rice of example 3 had a cracking rate of 23.4%; the polished rice of comparative example 1, had a cracking rate of 46.8%; the polished rice of comparative example 2, the cracking rate was 42.6%; the polished rice of comparative example 3, had a cracking rate of 44.8%; the control polished rice showed a cracking rate of 76.4%.
2. The same experiment method is adopted, the temperature of the experiment environment is adjusted to 45 ℃, the relative humidity is still 70%, the polished rice crack rate is detected again, and the result is as follows: the polished rice of example 1 had a cracking rate of 23.6%; polished rice of example 2, having a cracking rate of 21.4%; the polished rice of example 3 had a cracking rate of 24.6%; the polished rice of comparative example 1, the cracking rate was 58.8%; the polished rice of comparative example 2, the cracking rate was 44.2%; the polished rice of comparative example 3, having a cracking rate of 50.6%; the control polished rice showed a cracking rate of 93.8%.
According to the experimental results, the process method provided by the invention can reduce the generation rate of the cracks of the rice, thereby realizing the improvement of the quality of the rice.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention.
Claims (6)
1. A processing technology for improving the easy crack generation of rice in a storage environment is characterized by comprising the following specific processing methods:
1) weighing a proper amount of hexadecyl trimethyl ammonium bromide, ethanol, octane, distilled water and sodium hydroxide, adding the hexadecyl trimethyl ammonium bromide, the ethanol, the octane, the distilled water and the sodium hydroxide into a container, uniformly stirring the mixture for 10 to 20 minutes in a water bath at the temperature of between 35 and 40 ℃ and under the condition of 400rpm, then adding a proper amount of ethanol and 1, 2-bis (triethoxysilyl) ethane mixed liquid, reacting for 3 to 4 hours, centrifugally collecting a product after the reaction is finished, dispersing the product into an ethanol solution, adding a proper amount of concentrated hydrochloric acid, repeatedly cleaning the product with ethanol after reflux treatment, and drying the product to obtain the hollow mesoporous organic silicon oxide nanocapsule;
2) weighing a proper amount of manganese sulfate, potassium chlorate and potassium acetate, dissolving in deionized water, adding a proper amount of acetic acid solution after the solution is clarified, continuously stirring for 5-10min, then placing in a reaction kettle, reacting at 160-170 ℃ for 12-14h, cooling to room temperature after the reaction is finished, alternately washing with deionized water and ethanol until the product is neutral, and then placing in a 60-70 ℃ drying oven for drying to constant weight to obtain manganese dioxide nanowires;
3) dispersing a proper amount of manganese dioxide nanowires in molten polyethylene glycol, stirring for 10-13h at 70-80 ℃, adding expanded vermiculite powder into the mixture, keeping the mixture at 65-70 ℃ for 10-15h, transferring the impregnated expanded vermiculite powder onto filter paper, then placing the filter paper in a drying oven at 70-75 ℃ for treatment, continuously replacing the filter paper in the treatment process until no leakage trace is observed, taking out the product, and cooling to room temperature to obtain modified expanded vermiculite powder;
4) weighing a proper amount of chitosan, adding the chitosan into an acetic acid solution, uniformly stirring, adding a proper amount of hollow mesoporous organic silicon oxide nano capsules and modified expanded vermiculite powder, uniformly mixing to prepare a chitosan coating solution, weighing a proper amount of sodium carboxymethylcellulose, adding the sodium carboxymethylcellulose into distilled water to fully swell, then adding a proper amount of hollow mesoporous organic silicon oxide nano capsules and modified expanded vermiculite powder, uniformly mixing to prepare a sodium carboxymethylcellulose coating solution, standby, soaking the screened and impurity-removed rice into the chitosan coating solution for 2-3min, taking out, naturally drying at room temperature, then soaking in the sodium carboxymethylcellulose coating solution for 2-3min, airing at room temperature, alternately coating for 3-4 times according to the sequence of chitosan/sodium carboxymethylcellulose, vacuum drying until the water content is 11-14%, thus completing the processing technology of the rice.
2. The processing technology for improving the easy cracking of the rice under the storage environment as claimed in claim 1, wherein in the processing step 1), the mass volume ratio of the cetyl trimethyl ammonium bromide, the absolute ethyl alcohol, the octane, the distilled water and the sodium hydroxide is 20-25mg:0.8-1.0ml:0.12-0.15ml:8-10ml:0.08-0.09 ml; the concentration of the sodium hydroxide is 1-1.3 mol/L; the mass concentration of the ethanol is 70-80%.
3. The processing technology for improving the easy cracking of the rice under the storage environment as claimed in claim 1, wherein in the step 1), the volume ratio of the ethanol to the 1, 2-bis (triethoxysilyl) ethane in the mixed liquid is 5-6: 2; the adding amount of the mixed liquid is 1.5-2% of the total volume of the reaction system; the mass-volume ratio of the centrifugally collected product to the ethanol is 1:60-80 g/ml; the concentration of the concentrated hydrochloric acid is 12-15mol/L, and the addition amount is 0.2-0.4% of the volume of the ethanol; the temperature of the reflux treatment is 80-85 ℃ for 6-7 h.
4. The processing technology for improving the easy crack generation of the rice under the storage environment as claimed in claim 1, wherein in the process step 2), the mass volume ratio of the manganese sulfate, the potassium chlorate, the potassium acetate and the deionized water is 1g:1.2-1.4g:1-1.1g:85-90 ml; the mass concentration of the acetic acid solution is 2-5%, and the addition amount is 5-7% of the volume of the deionized water; the stirring speed is 80-120 r/min.
5. The processing technology for improving the easy cracking of the rice under the storage environment as claimed in claim 1, wherein in the process step 3), the mass ratio of the expanded vermiculite powder, the polyethylene glycol and the manganese dioxide nanowires is 1:2.3-2.7: 0.25-0.85; the stirring speed is 60-80 r/min; the particle size of the expanded vermiculite is 50-80 μm.
6. The processing technology for improving the easy cracking of the rice in the storage environment as claimed in claim 1, wherein in the step 4), the volume concentration of the acetic acid solution is 1-2%; in the chitosan coating liquid, the mass content of chitosan is 1.5-2.5%, and the mass contents of the hollow mesoporous organic silicon oxide nano capsule and the modified expanded vermiculite powder are 0.2-0.4% and 0.3-0.5% respectively; in the coating liquid of sodium carboxymethylcellulose, the mass content of sodium carboxymethylcellulose is 1.5-2.5%, and the mass content of the hollow mesoporous organic silicon oxide nanocapsule and the mass content of the modified expanded vermiculite powder are 0.1-0.3% and 0.2-0.4%, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011089920.7A CN112167335A (en) | 2020-10-13 | 2020-10-13 | Processing technology for improving easy cracking of rice in storage environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011089920.7A CN112167335A (en) | 2020-10-13 | 2020-10-13 | Processing technology for improving easy cracking of rice in storage environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112167335A true CN112167335A (en) | 2021-01-05 |
Family
ID=73949520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011089920.7A Pending CN112167335A (en) | 2020-10-13 | 2020-10-13 | Processing technology for improving easy cracking of rice in storage environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112167335A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404175A (en) * | 2021-06-25 | 2021-09-17 | 中建材创新科技研究院有限公司 | Paper-surface gypsum board and preparation method thereof |
| CN117777981A (en) * | 2024-02-27 | 2024-03-29 | 山东海嘉石油化工有限公司 | Preparation method of clay stabilizer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193273A (en) * | 2013-05-03 | 2013-07-10 | 广东工业大学 | Preparation method of extra-long manganese dioxide nanowires |
| CN104585310A (en) * | 2015-01-20 | 2015-05-06 | 东南大学 | Fruit and vegetable preservative and use method based on layer by layer self-assembly principle |
| CN109201153A (en) * | 2018-08-30 | 2019-01-15 | 怀宁县佳禾米业有限公司 | A kind of big rice processing method of low broken rice rate |
| CN110105924A (en) * | 2019-05-13 | 2019-08-09 | 中国地质大学（北京） | A kind of preparation method of hydrated salt-porous mineral composite phase-change energy storage material |
| CN110756131A (en) * | 2019-11-14 | 2020-02-07 | 吉林大学第一医院 | Flexible hollow mesoporous organic silicon oxide with oleophilic inner surface and preparation method thereof |
-
2020
- 2020-10-13 CN CN202011089920.7A patent/CN112167335A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193273A (en) * | 2013-05-03 | 2013-07-10 | 广东工业大学 | Preparation method of extra-long manganese dioxide nanowires |
| CN104585310A (en) * | 2015-01-20 | 2015-05-06 | 东南大学 | Fruit and vegetable preservative and use method based on layer by layer self-assembly principle |
| CN109201153A (en) * | 2018-08-30 | 2019-01-15 | 怀宁县佳禾米业有限公司 | A kind of big rice processing method of low broken rice rate |
| CN110105924A (en) * | 2019-05-13 | 2019-08-09 | 中国地质大学（北京） | A kind of preparation method of hydrated salt-porous mineral composite phase-change energy storage material |
| CN110756131A (en) * | 2019-11-14 | 2020-02-07 | 吉林大学第一医院 | Flexible hollow mesoporous organic silicon oxide with oleophilic inner surface and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404175A (en) * | 2021-06-25 | 2021-09-17 | 中建材创新科技研究院有限公司 | Paper-surface gypsum board and preparation method thereof |
| CN117777981A (en) * | 2024-02-27 | 2024-03-29 | 山东海嘉石油化工有限公司 | Preparation method of clay stabilizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112167335A (en) | Processing technology for improving easy cracking of rice in storage environment | |
| CN106693909B (en) | A kind of magnetic nano-particle and its preparation method and application of phenyl boric acid modification | |
| CN109762562A (en) | A kind of CsPbX3@TiO2Nano material and its preparation method and application | |
| CN111554856B (en) | Functional composite interlayer of lithium-sulfur battery, and preparation and application thereof | |
| CN105762283B (en) | A kind of perovskite solar cell light absorption layer Nano sol coating liquid and preparation method | |
| CN105789339A (en) | Perovskite solar cell nano silicon dioxide coating liquid and application thereof | |
| CN110523380A (en) | A kind of ceramic honey comb base aluminium-fumaric acid MOF adsorbent and its in-situ synthetic method | |
| CN110421665B (en) | Energy storage wood takes titanium dioxide loaded rhodamine red as heat conduction filler | |
| CN105170185A (en) | ZIF-8@MCM-41 molecular sieve and preparation method thereof | |
| CN107150387A (en) | A kind of hydrophobicity is heat-treated the preparation method of bamboo wood | |
| CN110156013A (en) | A kind of activated carbon surface pore forming method | |
| CN110041895A (en) | A kind of heat accumulation heat-transfer matcrial and preparation method thereof | |
| CN110328725B (en) | Energy storage wood takes carbon black loaded titanium dioxide as heat conduction filler | |
| CN111978037A (en) | Environment-friendly light full-decoration ground heating mortar | |
| CN111534283A (en) | SiO (silicon dioxide)2@NaNO3Microcapsule composite heat storage material and preparation method thereof | |
| CN113237933B (en) | Titanium carbide modified bismuth heterophosphate photoelectrode and preparation method thereof | |
| CN110467829A (en) | Mesoporous filler and its preparation method and application | |
| CN114212800B (en) | Novel high-silicon Y-type zeolite and preparation method and application thereof | |
| CN107876021A (en) | A kind of α Al2O3Composite material of plant fiber and its preparation and application | |
| CN102092741B (en) | Nano mesoporous molecular sieve and synthesis method thereof | |
| CN109395578A (en) | A kind of preparation method of honeycomb gas purification carrier | |
| CN108832183A (en) | A kind of preparation method of lithium ion battery | |
| CN108385445B (en) | A kind of high-performance nano paper and preparation method thereof | |
| CN106629748A (en) | Nano-silica sol with novel structure | |
| CN111609252A (en) | Low-thermal-conductivity heat insulation material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210105 |