CN103952232B - The method of Rice pollard oil is extracted in a kind of rice bran - Google Patents
The method of Rice pollard oil is extracted in a kind of rice bran Download PDFInfo
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- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 claims description 2
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- FODTZLFLDFKIQH-FSVGXZBPSA-N gamma-Oryzanol (TN) Chemical compound C1=C(O)C(OC)=CC(\C=C\C(=O)O[C@@H]2C([C@@H]3CC[C@H]4[C@]5(C)CC[C@@H]([C@@]5(C)CC[C@@]54C[C@@]53CC2)[C@H](C)CCC=C(C)C)(C)C)=C1 FODTZLFLDFKIQH-FSVGXZBPSA-N 0.000 description 1
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- Fats And Perfumes (AREA)
- Edible Oils And Fats (AREA)
Abstract
The present invention relates to and extract vegetables oil technical field from plant, especially the method for Rice pollard oil is extracted in a kind of rice bran, comprise rice bran pre-treatment, extraction chaff oil, alkali refining chaff oil, outer topping-up drying, decolouring, deodorization, depickling, dewax, come unstuck, divide and carry defatting step, the acid number of obtained rice finished product oil extracted from rice husks maintains 0.1-1.0mg/g, further reduce the acid number in Rice pollard oil, improve the quality of Rice pollard oil; Technique of the present invention is simple, and while extracting Rice pollard oil, rice bran is fully utilized, rice bran is made to be no longer merely for animal feed, also by extracting Rice pollard oil from rice bran, obtaining feed nutrition oil simultaneously, improve the nutritive value of rice bran as feed, add the added value of rice bran, reduce the production cost of Rice pollard oil.
Description
Technical field
The present invention relates to and extract vegetables oil technical field from plant, in especially a kind of rice bran, extract the method for Rice pollard oil.
Background technology
Rice pollard oil is a kind of nutritious vegetables oil, is sunflower seed oil, another heath food oil of producing again after maize germ, long-term edible rice bran oil, has prevention cardiovascular and cerebrovascular diseases, enhances metabolism and the function such as anti-ageing; Meanwhile, also containing a large amount of undersaturated lipid acid in Rice pollard oil, namely reach more than 80%, the density of Rice pollard oil is also relatively high, maintains 0.9< density <1g/cm
3.With regard to the situation that China is current, it is very large that rice bran amount is produced in the whole nation per year, because rice bran easily becomes sour rotten, in addition domestic production enterprise comparatively disperses, industrial scale is little, be difficult to concentrated rice bran and carry out deep processing increment, only have a small amount of for recovering rice bran oil, Rice pollard oil is fully utilized, improve the utilization once again of its nutritive value, and a large amount of rice brans is as just the ox that feeds pigs, feeds, the feed of feeding the livestocks such as sheep, its added value is very low, for this reason, be necessary to provide a kind of feasible scheme to rice bran as raw material production Rice pollard oil.
So, have a large amount of investigators from rice bran, extract Rice pollard oil to contribute, " a kind of method of refining of Rice pollard oil " that be CN101781605A as the patent No. discloses main with hair Rice pollard oil, acid number is at 30mg/g, for raw material, through coming unstuck, oil foot separation, dewaxing, decolouring, high temperature depickling, deodorization, freezing degreasing, obtain refining rice bran oil, its technological process is comparatively complicated, processing condition require higher, required cost is higher, and the acid value obtaining refining rice bran oil can only reach 3mg/g; Therefore, another one investigator is from the consideration of the angle of above technical problem, the patent No. be CN102295986A " disclose in a kind of preparation method of low-acid value rice bran oil extracted by keeping rice bran fresh, hair Rice pollard oil, come unstuck, dewax, decolour, depickling, the step such as deodorization, after the acid number of fresh rice bran is processed, the quality of raw material to subsequent handling operation and Rice pollard oil is protected, make the acid value of finished product between 1-3mg/g, the acid value of its finished product visible is also not ideal, production technique is comparatively complicated, and production cost is higher.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of production technique simple, not needing the Preservation Treatment doing formerly to rice bran, in the rice bran that the acid number of Rice pollard oil finished product is lower, extract the method for Rice pollard oil.
To achieve these goals, the present invention is achieved particular by following technical scheme:
Extract a method for Rice pollard oil in rice bran, comprise the following steps:
(1) rice bran pre-treatment: add in rice bran and account for the sanitas that rice bran weight ratio is 0.6-0.7%, the 6-8 that adds water doubly, after stirring, then carried out the process of 130-145 mesh sieve;
(2) extract chaff oil: adopt digestion agent to carry out expanded, immersion oil process the rice bran water mixture pretreated through step 1), the extraction temperature in leaching process is 30-65 DEG C, lixiviate 4-5.5h, obtain chaff oil;
(3) alkali refining chaff oil: adopt concentration to be the sodium hydroxide of 20%, alkali refining chaff oil at temperature is 50-60 DEG C, the amount that chaff oil exceeds sodium hydroxide is 0.2%;
(4) outer topping-up is dry: add acidification oil the chaff oil after the alkali refining through step 3) process, and increase pressure under 0.2-0.9MPa, wash with normal temperature, after washing 1-2h, maintenance pressure is constant, proceed in drying machine drying treatment at carrying out true temp 150-180 DEG C, make the moisture in its oil be evaporated into 5%;
(5) decolour: the pressure in step 4) is at the uniform velocity decompressed to 0.08 ~ 0.1MPa in 15 ~ 30min, and adds the gac of 3%, desolventing technology at temperature is 80 DEG C, obtain Rice pollard oil work in-process;
(6) deodorization: the Rice pollard oil work in-process of step 5) process are placed in Erlenmeyer flask is 0.01 ~ 0.02MPa, temperature 170-200 DEG C in vacuum tightness, adopts magnetic stirring apparatus to process 40-60min under 50-60r/min;
(7) depickling: by the Rice pollard oil work in-process of step 6) process, adopts centrifugation;
(8) dewax, come unstuck: by the Rice pollard oil work in-process processed in step 7), magnetic force is adopted to heat and be heated with stirring to temperature 100 ~ 120 DEG C, stirring velocity is 50 ~ 60r/min, stir 40 ~ 60min and carry out suction filtration again, and clean with same warm water, continuing constant temperature stirring velocity is stir 20min under 50 ~ 60r/min, then alternating temperature case is placed in, be then slowly cooled to 12 DEG C, speed of cooling is 10 DEG C/h, use refrigerated centrifuge centrifugal 15min under 4000r/min again, obtain come unstuck, dewax after Rice pollard oil work in-process and feed nutrition oily;
(9) divide and propose degreasing: by the Rice pollard oil work in-process of step 8) process at temperature is 10 ~ 12 DEG C, pressure is carry out for 0.01 ~ 0.02 time point proposing skimming treatment, obtains rice bran meal and Rice pollard oil.
Preferably, reductinic acid step is also included between described step 3) and step 4).
Preferably, reductinic acid step is also included between described step 5) and step 6).
Preferably, the sanitas in described step 1) is any one or two kinds of mixtures in Sorbic Acid, potassium sorbate.
Preferably, described step 2) in digestion agent be normal hexane, Virahol or sherwood oil.
Preferably, described step 2) in lixiviate use leach extraction method be Soxhlet extraction.
Preferably, add in rice bran in described step 1) and account for the sanitas that rice bran weight ratio is 0.65%, add water 7 times, after stirring, then carried out 140 mesh sieve process.
Preferably, in described step 6), vacuum tightness is 0.015MPa, temperature 190 DEG C, adopts magnetic stirring apparatus to process 50min under 55r/min.
Compared with prior art, technique effect of the present invention is embodied in:
1. technique of the present invention is simple, and while extracting Rice pollard oil, rice bran is fully utilized, rice bran is made to be no longer merely for animal feed, also by extracting Rice pollard oil from rice bran, obtaining feed nutrition oil simultaneously, improve the nutritive value of rice bran as feed, add the added value of rice bran, reduce the production cost of Rice pollard oil.
2. the present invention also passes through the cooperation process that in technique, each step is mutual, and appropriate process has been carried out to the acid produced in production process, make the acid number of rice finished product oil extracted from rice husks maintain 0.1 ~ 1.0mg/g, further reduce the acid number in Rice pollard oil, improve the quality of Rice pollard oil.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of the method extracting Rice pollard oil in rice bran of the present invention.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
Extract a method for Rice pollard oil in rice bran, comprise the following steps:
(1) rice bran pre-treatment: add in rice bran and account for the Sorbic Acid that rice bran weight ratio is 0.6%, add water 6 times, after stirring, then carried out 145 mesh sieve process;
(2) extract chaff oil: by adopt through the pretreated rice bran water mixture of step 1) concentration be 30% normal hexane and rice bran water mixture add according to volume ratio 1:5, carry out expanded, immersion oil process, extraction temperature in leaching process is 65 DEG C, lixiviate 5.5h, obtains chaff oil;
(3) alkali refining chaff oil: adopt concentration to be the sodium hydroxide of 20%, alkali refining chaff oil at temperature is 50 DEG C, the amount that chaff oil exceeds sodium hydroxide is 0.2%;
(4) outer topping-up is dry: add edible acid carburetion the chaff oil after the alkali refining through step 3) process, and increase pressure under 0.2MPa, wash with normal temperature, after washing 1h, maintenance pressure is constant, proceed in drying machine and carry out drying treatment at true temp 180 DEG C, make the moisture in its oil be evaporated into 5%;
(5) decolour: the pressure in step 4) is at the uniform velocity decompressed to 0.08MPa in 30min, and adds the gac of 3%, desolventing technology at temperature is 80 DEG C, obtain Rice pollard oil work in-process;
(6) deodorization: the Rice pollard oil work in-process of step 5) process are placed in Erlenmeyer flask is 0.01MPa in vacuum tightness, temperature 200 DEG C, adopts magnetic stirring apparatus to process 40min under 50r/min;
(7) depickling: by the Rice pollard oil work in-process of step 6) process, adopts centrifugation;
(8) dewax, come unstuck: by the Rice pollard oil work in-process processed in step 7), magnetic force is adopted to heat and be heated with stirring to temperature 120 DEG C, stirring velocity is 50r/min, stir 60min and carry out suction filtration again, and clean with same warm water, continuing constant temperature stirring velocity is stir 20min under 60r/min, then alternating temperature case is placed in, be then slowly cooled to 12 DEG C, speed of cooling is 10 DEG C/h, use refrigerated centrifuge centrifugal 15min under 4000r/min again, obtain come unstuck, dewax after Rice pollard oil work in-process and feed nutrition oily;
(9) divide and propose degreasing: by the Rice pollard oil work in-process of step 8) process at temperature is 12 DEG C, pressure is carry out under 0.02MPa point proposing skimming treatment, obtains rice bran meal and Rice pollard oil.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.13mg/g.
Embodiment 2
Extract a method for Rice pollard oil in rice bran, comprise the following steps:
(1) rice bran pre-treatment: add in rice bran and account for the sodium sorbate that rice bran weight ratio is 0.7%, add water 8 times, after stirring, then carried out 130 mesh sieve process;
(2) extract chaff oil: adopt Virahol to carry out expanded, immersion oil process the rice bran water mixture pretreated through step 1), the extraction temperature in leaching process is 65 DEG C, lixiviate 4h, obtain chaff oil;
(3) alkali refining chaff oil: adopt concentration to be the sodium hydroxide of 20%, alkali refining chaff oil at temperature is 60 DEG C, the amount that chaff oil exceeds sodium hydroxide is 0.2%;
(4) outer topping-up is dry: add edible acid carburetion the chaff oil after the alkali refining through step 3) process, and increase pressure under 0.9MPa, wash with normal temperature, after washing 2h, maintenance pressure is constant, proceed in drying machine and carry out drying treatment at true temp 150 DEG C, make the moisture in its oil be evaporated into 5%;
(5) decolour: the pressure in step 4) is at the uniform velocity decompressed to 0.1MPa in 15min, and adds the gac of 3%, desolventing technology at temperature is 80 DEG C, obtain Rice pollard oil work in-process;
(6) deodorization: the Rice pollard oil work in-process of step 5) process are placed in Erlenmeyer flask is 0.02MPa in vacuum tightness, temperature 170 DEG C, adopts magnetic stirring apparatus to process 60min under 60r/min;
(7) depickling: by the Rice pollard oil work in-process of step 6) process, adopts centrifugation;
(8) dewax, come unstuck: by the Rice pollard oil work in-process processed in step 7), magnetic force is adopted to heat and be heated with stirring to temperature 100 DEG C, stirring velocity is 60r/min, stir 40min and carry out suction filtration again, and clean with same warm water, continuing constant temperature stirring velocity is stir 20min under 50r/min, then alternating temperature case is placed in, be then slowly cooled to 12 DEG C, speed of cooling is 10 DEG C/h, use refrigerated centrifuge centrifugal 15min under 4000r/min again, obtain come unstuck, dewax after Rice pollard oil work in-process and feed nutrition oily;
(9) divide and propose degreasing: by the Rice pollard oil work in-process of step 8) process at temperature is 10 DEG C, pressure is carry out under 0.01MPa point proposing skimming treatment, obtains rice bran meal and Rice pollard oil.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.31mg/g.
Embodiment 3
Extract a method for Rice pollard oil in rice bran, comprise the following steps:
(1) rice bran pre-treatment: add in rice bran and account for Sorbic Acid and the sodium sorbate that rice bran weight ratio is 0.65%, add water 7 times, after stirring, then carried out 140 mesh sieve process;
(2) extract chaff oil: adopt sherwood oil to carry out expanded, immersion oil process the rice bran water mixture pretreated through step 1), the extraction temperature in leaching process is 40 DEG C, lixiviate 5h, obtain chaff oil;
(3) alkali refining chaff oil: adopt concentration to be the sodium hydroxide of 20%, alkali refining chaff oil at temperature is 55 DEG C, the amount that chaff oil exceeds sodium hydroxide is 0.2%;
(4) outer topping-up is dry: add edible acid carburetion the chaff oil after the alkali refining through step 3) process, and increase pressure under 0.6MPa, wash with normal temperature, after washing 1.5h, maintenance pressure is constant, proceed in drying machine and carry out drying treatment at true temp 165 DEG C, make the moisture in its oil be evaporated into 5%;
(5) decolour: the pressure in step 4) is at the uniform velocity decompressed to 0.09MPa in 22min, and adds the gac of 3%, desolventing technology at temperature is 80 DEG C, obtain Rice pollard oil work in-process;
(6) deodorization: the Rice pollard oil work in-process of step 5) process are placed in Erlenmeyer flask is 0.015MPa in vacuum tightness, temperature 180 DEG C, adopts magnetic stirring apparatus to process 50min under 55r/min;
(7) depickling: by the Rice pollard oil work in-process of step 6) process, adopts centrifugation;
(8) dewax, come unstuck: by the Rice pollard oil work in-process processed in step 7), magnetic force is adopted to heat and be heated with stirring to temperature 110 DEG C, stirring velocity is 55r/min, stir 50min and carry out suction filtration again, and clean with same warm water, continuing constant temperature stirring velocity is stir 20min under 55r/min, then alternating temperature case is placed in, be then slowly cooled to 12 DEG C, speed of cooling is 10 DEG C/h, use refrigerated centrifuge centrifugal 15min under 4000r/min again, obtain come unstuck, dewax after Rice pollard oil work in-process and feed nutrition oily;
(9) divide and propose degreasing: by the Rice pollard oil work in-process of step 8) process at temperature is 11 DEG C, pressure is carry out for 0.015 time point proposing skimming treatment, obtains rice bran meal and Rice pollard oil.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.76mg/g.
Embodiment 4
The method of Rice pollard oil is extracted in a kind of rice bran, be included on the basis of embodiment 1-3 institute in steps, wherein between step 3) and step 4), be also added with reductinic acid step, by adding the hydrogen of 10% to acid or adding the mode of alcohol, the part acid formed in step 3) is made to be reduced or to be melted by alcohol, and then the acid number in reduction product, specifically under pressure is 0.08MPa, temperature is carried out hydrogenation reaction or is added alcohol esterification at 120 DEG C, make acid be reduced process, reduce finished product acid number.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.82mg/g.
Embodiment 5
The method of Rice pollard oil is extracted in a kind of rice bran, be included on the basis of embodiment 1-3 institute in steps, wherein between step 5) and step 6), be also added with reductinic acid step, by adding the hydrogen of 10% to acid or adding the mode of alcohol, the part acid formed in step 3) is made to be reduced or to be melted by alcohol, and then the acid number in reduction product, specifically under pressure is 0.09MPa, temperature is carried out hydrogenation reaction or is added alcohol esterification at 100 DEG C, make acid be reduced process, reduce finished product acid number.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.93mg/g.
Embodiment 6
The method of Rice pollard oil is extracted in a kind of rice bran, be included on the basis of embodiment 1-3 institute in steps, wherein in step 3) and step 4) and be also added with reductinic acid step between step 5) and step 6), by adding the hydrogen of 10% to acid or adding the mode of alcohol, the part acid formed in step 3) is made to be reduced or to be melted by alcohol, and then the acid number in reduction product, specifically under pressure is 0.08MPa, temperature is carried out hydrogenation reaction or is added alcohol esterification at 110 DEG C, make acid be reduced process, reduce finished product acid number.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.54mg/g.
Embodiment 7
The method of Rice pollard oil is extracted in a kind of rice bran, on the basis of embodiment 1-6, in step 2) in the leach extraction method that adopts be Soxhlet extraction, and according to the production that the preparation method of embodiment 1-6 carries out Rice pollard oil, Rice pollard oil prepared by method of the present invention can be obtained.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.62mg/g.
Embodiment 8
Extract a method for Rice pollard oil in rice bran, on the basis of embodiment 1-6 or 7, the numerical value change in concrete steps is:
Rice bran pre-treatment in step 1: add in rice bran and account for the sanitas that rice bran weight ratio is 0.62%, add water 6.5 times, after stirring, then carried out 135 mesh sieve process;
Step 2) middle extraction chaff oil: adopt digestion agent to carry out expanded, immersion oil process the rice bran water mixture pretreated through step 1), the extraction temperature in leaching process is 45 DEG C, lixiviate 4.5h, obtains chaff oily;
Alkali refining chaff oil in step 3): adopt concentration to be the sodium hydroxide of 20%, alkali refining chaff oil at temperature is 52 DEG C, the amount that chaff oil exceeds sodium hydroxide is 0.2%;
Step 4) China and foreign countries topping-up is dry: add acidification oil the chaff oil after the alkali refining through step 3) process, and increase pressure under 0.3MPa, wash with normal temperature, after washing 1.2h, maintenance pressure is constant, proceed in drying machine and carry out drying treatment at true temp 160 DEG C, make the moisture in its oil be evaporated into 5%;
Decolour in step 5): the pressure in step 4) is at the uniform velocity decompressed to 0.085MPa in 20min, and add the gac of 3%, desolventing technology at temperature is 80 DEG C, obtain Rice pollard oil work in-process;
Deodorization in step 6): the Rice pollard oil work in-process of step 5) process are placed in Erlenmeyer flask, are 0.013MPa in vacuum tightness, temperature 190 DEG C, adopts magnetic stirring apparatus to process 55min under 53r/min;
Dewax in step 8), come unstuck: by the Rice pollard oil work in-process processed in step 7), magnetic force is adopted to heat and be heated with stirring to temperature 105 DEG C, stirring velocity is 53r/min, stir 45min and carry out suction filtration again, and clean with same warm water, continuing constant temperature stirring velocity is stir 20min under 53r/min, then alternating temperature case is placed in, be then slowly cooled to 12 DEG C, speed of cooling is 10 DEG C/h, use refrigerated centrifuge centrifugal 15min under 4000r/min again, obtain come unstuck, dewax after Rice pollard oil work in-process and feed nutrition oily;
Point propose degreasing in step 9): by the Rice pollard oil work in-process of step 8) process at temperature is 10.5 DEG C, pressure is carry out for 0.013 time point proposing skimming treatment, acquisition rice bran meal and Rice pollard oil.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.41mg/g.
Embodiment 9
Extract a method for Rice pollard oil in rice bran, on the basis of embodiment 1-6 or 7, the numerical value change in concrete steps is:
Rice bran pre-treatment in step 1): add in rice bran and account for the sanitas that rice bran weight ratio is 0.68%, add water 7.5 times, after stirring, then carried out 138 mesh sieve process;
Step 2) middle extraction chaff oil: adopt digestion agent to carry out expanded, immersion oil process the rice bran water mixture pretreated through step 1), the extraction temperature in leaching process is 48 DEG C, lixiviate 4.8h, obtains chaff oily;
Alkali refining chaff oil in step 3): adopt concentration to be the sodium hydroxide of 20%, alkali refining chaff oil at temperature is 58 DEG C, the amount that chaff oil exceeds sodium hydroxide is 0.2%;
Step 4) China and foreign countries topping-up is dry: add acidification oil the chaff oil after the alkali refining through step 3) process, and increase pressure under 0.8MPa, wash with normal temperature, after washing 1.8h, maintenance pressure is constant, proceed in drying machine and carry out drying treatment at true temp 165 DEG C, make the moisture in its oil be evaporated into 5%;
Decolour in step 5): the pressure in step 4) is at the uniform velocity decompressed to 0.095MPa in 28min, and add the gac of 3%, desolventing technology at temperature is 80 DEG C, obtain Rice pollard oil work in-process;
Deodorization in step 6): the Rice pollard oil work in-process of step 5) process are placed in Erlenmeyer flask, are 0.018MPa in vacuum tightness, temperature 185 DEG C, adopts magnetic stirring apparatus to process 45min under 58r/min;
Dewax in step 8), come unstuck: by the Rice pollard oil work in-process processed in step 7), magnetic force is adopted to heat and be heated with stirring to temperature 115 DEG C, stirring velocity is 58r/min, stir 55min and carry out suction filtration again, and clean with same warm water, continuing constant temperature stirring velocity is stir 28min under 58r/min, then alternating temperature case is placed in, be then slowly cooled to 12 DEG C, speed of cooling is 10 DEG C/h, use refrigerated centrifuge centrifugal 15min under 4000r/min again, obtain come unstuck, dewax after Rice pollard oil work in-process and feed nutrition oily;
Point propose degreasing in step 9): by the Rice pollard oil work in-process of step 8) process at temperature is 11.5 DEG C, pressure is carry out for 0.018 time point proposing skimming treatment, acquisition rice bran meal and Rice pollard oil.
The rice finished product oil extracted from rice husks of the present embodiment gained measures by the method that GB/T5530-2005 specifies, its acid content is 0.28mg/g.
Embodiment 11
The Rice pollard oil extracted in a kind of rice bran dissolves for hypoglycemic Chinese medical extract for auxiliary material, makes hypoglycemic, antilipemic Chinese herbal medicine extract particles; In Rice pollard oil, unsaturated fatty acid content is up to more than 70%, has higher nutritive value; In Rice pollard oil, gamma oryzanol and composite natral vitamin-E are unique in rice bran and highly active tool lipopenicillinase and antioxygenation compounds, for the feature that the good stability existing for Rice pollard oil, moderate, the tool Lipid-lowering activities of relative density own and specific absorption are high, the oily liquid auxiliary material of the present invention using Rice pollard oil as fat-reducing soft capsule, can strengthen the reducing blood-fat drug effect of fat-reducing soft capsule.
It is important to point out at this: above embodiment is only limitted to be further elaborated technical scheme of the present invention; and be not limited to do further restriction to technical scheme of the present invention; for excellent good embodiment of the present invention; therefore, those skilled in the art is protection category of the present invention to the improvement of the unsubstantiality perhaps made in other in of the present invention and apparent creation on the basis of technique scheme.
Claims (8)
1. extract a method for Rice pollard oil in rice bran, it is characterized in that, comprise the following steps:
(1) rice bran pre-treatment: add in rice bran and account for the sanitas that rice bran weight ratio is 0.6-0.7%, the 6-8 that adds water doubly, after stirring, then carried out the process of 130-145 mesh sieve;
(2) extract chaff oil: adopt digestion agent to carry out expanded, immersion oil process the rice bran water mixture pretreated through step (1), the extraction temperature in leaching process is 30-65 DEG C, lixiviate 4-5.5h, obtain chaff oil;
(3) alkali refining chaff oil: adopt concentration to be the sodium hydroxide of 20%, alkali refining chaff oil at temperature is 50-60 DEG C, the amount that chaff oil exceeds sodium hydroxide is 0.2%;
(4) outer topping-up is dry: from the chaff oil after the alkali refining processed through step (3), add acidification oil, and increase pressure under 0.2-0.9MPa, wash with normal temperature, after washing 1-2h, maintenance pressure is constant, proceed in drying machine drying treatment at carrying out true temp 150-180 DEG C, make the moisture in its oil be evaporated into 5%;
(5) decolour: the pressure in step (4) is at the uniform velocity decompressed to 0.08 ~ 0.1MPa in 15 ~ 30min, and adds the gac of 3%, desolventing technology at temperature is 80 DEG C, obtain Rice pollard oil work in-process;
(6) deodorization: the Rice pollard oil work in-process that step (5) processed are placed in Erlenmeyer flask is 0.01 ~ 0.02MPa, temperature 170-200 DEG C in vacuum tightness, adopts magnetic stirring apparatus to process 40-60min under 50-60r/min;
(7) depickling: Rice pollard oil work in-process step (6) processed, adopts centrifugation;
(8) dewax, come unstuck: by the Rice pollard oil work in-process processed in step (7), magnetic force is adopted to heat and be heated with stirring to temperature 100 ~ 120 DEG C, stirring velocity is 50 ~ 60r/min, stir 40 ~ 60min and carry out suction filtration again, and clean with same warm water, continuing constant temperature stirring velocity is stir 20min under 50 ~ 60r/min, then alternating temperature case is placed in, be then slowly cooled to 12 DEG C, speed of cooling is 10 DEG C/h, use refrigerated centrifuge centrifugal 15min under 4000r/min again, obtain come unstuck, dewax after Rice pollard oil work in-process and feed nutrition oily;
(9) divide and propose degreasing: Rice pollard oil work in-process step (8) processed are at temperature is 10 ~ 12 DEG C, and pressure is carry out for 0.01 ~ 0.02 time point proposing skimming treatment, obtains rice bran meal and Rice pollard oil.
2. extract the method for Rice pollard oil in rice bran as claimed in claim 1, it is characterized in that, between described step (3) and step (4), also include reductinic acid step.
3. extract the method for Rice pollard oil in rice bran as claimed in claim 1, it is characterized in that, between described step (5) and step (6), also include reductinic acid step.
4. extract the method for Rice pollard oil in rice bran as claimed in claim 1, it is characterized in that, the sanitas in described step (1) is any one or two kinds of mixtures in Sorbic Acid, potassium sorbate.
5. extract the method for Rice pollard oil in rice bran as claimed in claim 1, it is characterized in that, the digestion agent in described step (2) is normal hexane, Virahol or sherwood oil.
6. extract the method for Rice pollard oil in rice bran as claimed in claim 1, it is characterized in that, the leach extraction method that the lixiviate in described step (2) uses is Soxhlet extraction.
7. extract the method for Rice pollard oil in rice bran as claimed in claim 1, it is characterized in that, in rice bran, add accounting for the sanitas that rice bran weight ratio is 0.65% in described step (1), add water 7 times, after stirring, then carried out 140 mesh sieve process.
8. extract the method for Rice pollard oil in rice bran as claimed in claim 1, it is characterized in that, in described step (6), vacuum tightness is 0.015MPa, temperature 190 DEG C, adopts magnetic stirring apparatus to process 50min under 55r/min.
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| CN104194929B (en) * | 2014-09-04 | 2016-07-13 | 陈汉卿 | A kind of oils and fats refines system |
| CN104946376A (en) * | 2015-05-29 | 2015-09-30 | 蚌埠市江淮粮油有限公司 | Method for extracting rice bran oil from rice bran |
| CN105454464A (en) * | 2015-12-11 | 2016-04-06 | 武汉市知富企业管理咨询有限公司 | Health-care rice bran oil with calcium supplementing and blood lipid reducing functions |
| CN107319264A (en) * | 2017-05-09 | 2017-11-07 | 湖北工业大学 | A kind of process of fresh rice bran stabilization processes |
| CN108034491A (en) * | 2018-01-19 | 2018-05-15 | 福建小薇金匙科技孵化有限公司 | A kind of technique using rice bran extraction rice bran oil |
| CN108998230A (en) * | 2018-07-24 | 2018-12-14 | 沈慧红 | A kind of processing method that the low-temp extraction dregs of rice extract rice bran oil |
| CN114391583A (en) * | 2021-11-26 | 2022-04-26 | 广州福汇食品科技有限公司 | Student nutritional oil with balanced nutrition and preparation method thereof |
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