CN112806433A - Sweet potato preservation method - Google Patents
Sweet potato preservation method Download PDFInfo
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- CN112806433A CN112806433A CN202110025445.5A CN202110025445A CN112806433A CN 112806433 A CN112806433 A CN 112806433A CN 202110025445 A CN202110025445 A CN 202110025445A CN 112806433 A CN112806433 A CN 112806433A
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- 235000002678 Ipomoea batatas Nutrition 0.000 title claims abstract description 132
- 238000004321 preservation Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229920005610 lignin Polymers 0.000 claims abstract description 33
- 238000009423 ventilation Methods 0.000 claims abstract description 16
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- 238000009434 installation Methods 0.000 claims description 36
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 22
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- 229940069949 propolis Drugs 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 20
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- 230000002335 preservative effect Effects 0.000 claims description 18
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 13
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- 238000002156 mixing Methods 0.000 claims description 8
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- 230000006866 deterioration Effects 0.000 claims description 6
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- 244000061456 Solanum tuberosum Species 0.000 claims description 5
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- JXAZAUKOWVKTLO-UHFFFAOYSA-L sodium pyrosulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OS([O-])(=O)=O JXAZAUKOWVKTLO-UHFFFAOYSA-L 0.000 claims description 5
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Images
Classifications
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- 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
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/154—Organic compounds; Microorganisms; Enzymes
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/14—Containers specially adapted for storing
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/16—Arrangements in forage silos
- A01F25/22—Ventilating arrangements
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/20—Combustible or heat-generating compositions
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/08—Magnoliopsida [dicotyledons]
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N65/00—Biocides, pest repellants or attractants, or plant growth regulators containing material from algae, lichens, bryophyta, multi-cellular fungi or plants, or extracts thereof
- A01N65/08—Magnoliopsida [dicotyledons]
- A01N65/12—Asteraceae or Compositae [Aster or Sunflower family], e.g. daisy, pyrethrum, artichoke, lettuce, sunflower, wormwood or tarragon
-
- 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
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/154—Organic compounds; Microorganisms; Enzymes
- A23B7/155—Microorganisms; Enzymes; Antibiotics
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- 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
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/157—Inorganic compounds
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- 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
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Abstract
The invention discloses a sweet potato preservation method, which comprises the following steps: 1) constructing a fresh-keeping warehouse; 2) processing in a fresh-keeping warehouse; 3) selecting sweet potatoes; 4) processing sweet potatoes; 5) placing sweet potatoes; 6) daily management, through dry chinese mugwort grass, the houttuyniae, the forage fumigation that the dodder compares constitution is smoked, chinese mugwort grass, the two synergy of houttuyniae, can further guarantee the inside disinfection and isolation environment of fresh-keeping storehouse, help the fresh-keeping of sweet potato, through adding the antistaling agent that contains components such as modified lignin, fresh-keeping effect is fabulous, sweet potato's fresh-keeping time has been prolonged further, through the initiative ventilation equipment in this application, form whirlwind, the air jet range has been enlarged simultaneously, make the circulation of air effect better, help the fresh-keeping of sweet potato, through setting up the storage frame, can make the sweet potato at the space internal motion in fresh-keeping storehouse, fully adapt to the environment in the whole fresh-keeping storehouse, reduce because the temperature of fresh-keeping storehouse different positions, the fresh-.
Description
Technical Field
The invention relates to the technical field of preservation, in particular to a sweet potato preservation method.
Background
Sweet potato: also called sweet potato, Dioscorea of Dioscoreaceae, winding grass vine. The branch ends at the top of the underground tuber are expanded into egg-shaped tubers, and the outer skin is light yellow and smooth. The stem revolves left, the base has thorns, and the hair is molted in a T shape. Single leaf intergrowth, broad heart shape; the male inflorescence is spike-shaped inflorescence, is single-grown, and has no stem or extremely short stem; the bract is egg-shaped, and the top is tapered; the floral quilt is in a shallow cup shape and is short and soft; triangular prism shape of capsule, slightly concave top, truncated base, wing shape of each edge; the seeds are round and have wings. Early summer in flowering period.
After sweet potatoes are harvested, the sweet potatoes need to be stored, and then the sweet potatoes need to be preserved, so that the quality of the sweet potatoes is kept, the existing traditional preservation method is short in preservation time, and the preservation effect is not ideal.
Disclosure of Invention
The invention aims to provide a sweet potato preservation method to solve the problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a sweet potato preservation method comprises the following steps:
1) and (3) constructing a fresh-keeping warehouse: the construction of the storehouse body adopts a brick concrete structure, the storage amount accounts for 70-80% of the total space, the wall bodies are provided with heat insulation materials, and active ventilation equipment and temperature and humidity adjusting equipment are arranged;
2) and (3) fresh-keeping warehouse treatment: smoking for 60-120min by adopting a forage composed of dry wormwood, houttuynia cordata and semen cuscutae in equal ratio, after smoking is finished, spraying a potassium permanganate solution with the concentration of 0.1-0.2mol/L on the inner side wall, the ground and the top of the fresh-keeping warehouse, after spraying is finished, sealing for 12-24 hours, ventilating for 3 days, and exchanging air with the outside;
3) selecting sweet potatoes: selecting normal sweet potatoes without insect eyes, damage and deterioration;
4) and (3) sweet potato treatment: washing the selected sweet potatoes by a spraying mode, controlling the spraying water pressure at the washing temperature of 20-30 ℃ to prevent the potato skins from being damaged; placing the cleaned sweet potato on a sieve plate, draining off water, air-drying the water on the surface of the sweet potato by using a fan with the air-out temperature of 30-40 ℃, and controlling the air-out pressure to prevent the potato skin from being damaged; uniformly mixing the air-dried sweet potatoes and the preservative according to the weight ratio of 150-;
5) sweet potato placement: placing the processed sweet potatoes on a storage rack, laying a layer of straws at the positions of the storage rack where the sweet potatoes are placed, soaking the straws in the preservative for 1-2h, and drying;
6) daily management: controlling the temperature in the sweet potato fresh-keeping storehouse to be 10-15 ℃ and the relative humidity to be 75-85%, keeping the sweet potato ventilated during the storage period, carrying out spot inspection on the sweet potatoes every 2 weeks, and timely removing the germinated or rotten sweet potatoes.
On the basis of the technical scheme, the invention also provides the following optional technical scheme:
in one alternative: preferably, the length of the fresh-keeping storehouse is 30-40 meters, the width of the fresh-keeping storehouse is 15-20 meters, and the height of the fresh-keeping storehouse is 4-6 meters.
In one alternative: the active ventilation equipment comprises a hollow shaft, a driving mechanism for driving the hollow shaft to rotate, a first fan, an air injection pipe, a driving rod, a moving cam and a tension spring, wherein the hollow shaft is rotatably arranged on one side wall of the fresh-keeping warehouse, the driving mechanism is arranged on the side wall of the fresh-keeping warehouse and is in driving connection with the hollow shaft, the driving mechanism comprises a driving motor and a gear pair, the driving motor is fixedly arranged on the side wall of the fresh-keeping warehouse, the driving motor is in driving connection with the hollow shaft through the gear pair, one end of the hollow shaft, which is positioned in the fresh-keeping warehouse, is annularly hinged with a plurality of air injection pipes, a hose is connected between the hollow shaft and the air injection pipes, the tension spring is also connected between the air injection pipes and the hollow shaft, the other end of the hollow shaft penetrates into and is in rotating connection with a, fixed mounting has the removal cam on the fresh-keeping storehouse inner wall, and actuating lever and the inclined plane contact of removal cam, first fan send into the quill shaft then by jet-propelled pipe blowout with wind for the circulation of air, drive the quill shaft through actuating mechanism and rotate, and the quill shaft drives jet-propelled pipe and rotates, and jet-propelled pipe rotates and forms whirlwind, simultaneously, makes jet-propelled pipe angle constantly change through the cooperation of actuating lever, removal cam and extension spring, has enlarged jet-propelled scope, makes the circulation of air effect better.
In one alternative: the temperature and humidity adjusting device comprises a humidity sensor, a humidifier, a heating device and an air inlet pipe, wherein the humidity sensor, the humidifier, the heating device and the air inlet pipe are arranged in the fresh storage, and wet steam is supplied to the air inlet pipe.
In one alternative: the storage rack comprises two support frames, a mounting plate and a placing frame for placing sweet potatoes, wherein the two support frames are symmetrically arranged, the two support frames are preferably in an inverted V shape, an installation shaft is rotatably connected between the two support frames, a first motor for driving the installation shaft to rotate is fixedly installed on one support frame, one end, away from the first motor, of the installation shaft penetrates into and is rotatably connected with an air supply pipe, the air supply pipe is communicated with an air outlet of a second fan, the second fan is preferably and fixedly installed on the support frame, rotary tables are respectively and fixedly installed at two ends of the installation shaft, the placing frame is connected and installed between the two rotary tables and comprises arc-shaped rods, connecting shafts and rotating shafts, the two arc-shaped rods are symmetrically arranged, a plurality of connecting shafts are fixedly connected between the two arc-shaped rods at equal intervals and are used for, the pivot rotates rather than the carousel of neighbouring to be connected, installation axle and the equal inside cavity of carousel and both inner chambers intercommunication, all evenly seted up the fumarole on the opposite face of installation axle and two carousels, drive the installation axle through first motor and rotate, the installation axle drives the carousel and rotates, can make the sweet potato at the space internal motion in fresh-keeping storehouse, the environment in the whole fresh-keeping storehouse of full adaptation reduces because the fresh-keeping effect of the different positions sweet potatoes of temperature, the difference of humidity of fresh-keeping storehouse different positions influences, makes things convenient for the staff to get simultaneously and puts the sweet potato, improves the space utilization in fresh-keeping storehouse.
In one alternative: the preservative comprises the following raw materials in parts by weight: 3-4 parts of chitosan, 1-2 parts of sodium pyrosulfate and propolis supercritical CO21-3 parts of extract, 0.5-1.5 parts of chitinase, 1-2 parts of modified lignin and 0.4-1 part of citric acid.
In one alternative: the propolis is supercritical CO2The extract is prepared by carbon dioxide supercritical extraction, and the specific steps are as follows: freezing and pulverizing propolis raw material, and extracting with supercritical CO2Extracting under 30-40MPa in extraction tower at 35-45 deg.C for 3-5 hr with entrainer of 10-20 wt% ethanol, ethanol volume concentration of 70-80%, separation tower pressure of 6-8MPa and separation temperature of 40-50 deg.C, and discharging from separation tower to obtain propolis supercritical CO2And (3) extracting.
In one alternative: the preparation method of the modified lignin comprises the following steps: adding 1-5 parts by weight of aldehyde and 1-5 parts by weight of amino acid into an alkaline solution containing 40-50 parts by weight of lignin, heating and reacting for 1-3h at 80-120 ℃, obtaining the required modified lignin, wherein the lignin is a natural polyphenol polymer and has high oxidation resistance and light stability, a large number of active oxygen clusters are gathered on the surface, and when the lignin is contacted with bacteria, the active oxygen clusters can be released to induce the bacteria to generate oxidative stress reaction, so that the normal oxidation reduction physiological process of the bacteria is changed and the bacteria death is caused, and the antibacterial activity of the lignin is further enhanced after modification, thereby improving the fresh-keeping effect.
Compared with the prior art, the invention has the following beneficial effects:
through the forage fumigation that dry chinese mugwort grass, heartleaf houttuynia herb, dodder etc. ratio constitutes, chinese mugwort grass, heartleaf houttuynia herb two synergy, can further guarantee the disinfection and sterilization environment inside the fresh-keeping storehouse, help the fresh-keeping of sweet potato, through adding the antistaling agent that contains components such as modified lignin, fresh-keeping effect is fabulous, the fresh-keeping time of sweet potato has further been prolonged, through the initiative ventilation equipment in this application, drive the quill shaft through actuating mechanism and rotate, the quill shaft drives the jet-propelled pipe and rotates, the jet-propelled pipe rotates and forms the whirlwind, simultaneously, through the actuating lever, the cooperation of moving cam and extension spring makes the jet-propelled pipe angle constantly change, the jet-propelled scope has been enlarged, make the circulation of air effect better, help the fresh-keeping of sweet potato, through setting up the storage frame, drive the installation axle through first motor and rotate, the installation axle, the sweet potato fresh-keeping storehouse has the advantages that the sweet potato fresh-keeping storehouse is fully adaptive to the environment in the whole fresh-keeping storehouse, the fresh-keeping effect of sweet potatoes in different positions due to the influence of the difference of the temperature and the humidity of different positions of the fresh-keeping storehouse is reduced, meanwhile, the sweet potatoes are conveniently taken and placed by workers, and the space utilization rate of the fresh-keeping storehouse is.
Drawings
Fig. 1 is a schematic structural view of a storage rack according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an active ventilation device in a storage rack according to an embodiment of the present invention.
Notations for reference numerals: 1-supporting frame, 2-mounting plate, 3-arc rod, 4-rotating shaft, 5-connecting shaft, 6-air supply pipe, 7-mounting shaft, 8-first fan, 9-connecting air pipe, 10-hollow shaft, 11-driving mechanism, 12-driving rod, 13-air ejector pipe, 14-tension spring and 15-moving cam.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Example 1
A sweet potato preservation method comprises the following steps:
1) and (3) constructing a fresh-keeping warehouse: the construction of the storehouse body adopts a brick concrete structure, the storage amount accounts for 70-80% of the total space, the wall bodies are provided with heat insulation materials, and active ventilation equipment and temperature and humidity adjusting equipment are arranged;
2) and (3) fresh-keeping warehouse treatment: smoking for 60min by adopting a forage composed of dry wormwood, houttuynia cordata and semen cuscutae in equal proportion, after smoking is finished, spraying a potassium permanganate solution with the concentration of 0.1mol/L on the inner side wall, the ground and the top of the fresh-keeping warehouse, sealing for 12 hours after spraying is finished, ventilating for 3 days, and exchanging air with the outside;
3) selecting sweet potatoes: selecting normal sweet potatoes without insect eyes, damage and deterioration;
4) and (3) sweet potato treatment: washing the selected sweet potatoes by a spraying mode, controlling the spraying water pressure at the washing temperature of 20 ℃ to prevent the potato skins from being damaged; placing the cleaned sweet potatoes on a sieve plate to drain water, then using a fan with the air outlet temperature of 30 ℃ to air dry the water on the surfaces of the sweet potatoes, controlling the air outlet pressure and preventing the potato peels from being damaged; uniformly mixing the air-dried sweet potatoes with the preservative according to the weight ratio of 150:10, and paying attention to the fact that potato skins are not damaged in the mixing process;
5) sweet potato placement: placing the processed sweet potatoes on a storage rack, laying a layer of straws at the positions of the storage rack where the sweet potatoes are placed, soaking the straws in the preservative for 1 hour, and drying;
6) daily management: controlling the temperature in the sweet potato fresh-keeping storehouse to be 10 ℃ and the relative humidity to be 75%, keeping the sweet potatoes ventilated during the storage period, carrying out spot inspection on the sweet potatoes every 2 weeks, and removing the sweet potatoes which are germinated or rotten in time.
Wherein, the length of the fresh-keeping storehouse is 30 meters, the width is 15 meters, and the height is 4 meters.
The active ventilation equipment comprises a hollow shaft 10, a driving mechanism 11 for driving the hollow shaft 10 to rotate, a first fan 8, an air injection pipe 13, a driving rod 12, a moving cam 15 and a tension spring 14, wherein the hollow shaft 10 is rotatably installed on one side wall of the preservation warehouse, the driving mechanism 11 is installed on the side wall of the preservation warehouse and is in driving connection with the hollow shaft 10, the driving mechanism 11 comprises a driving motor and a gear pair, the driving motor is fixedly installed on the side wall of the preservation warehouse, the driving motor is in driving connection with the hollow shaft 10 through the gear pair, one end of the hollow shaft 10, which is positioned in the preservation warehouse, is annularly hinged with a plurality of air injection pipes 13, a hose is connected between the hollow shaft 10 and the air injection pipe 13, the tension spring 14 is also connected between the air injection pipe 13 and the hollow shaft 10, the other end of the hollow shaft 10 penetrates and is in rotating connection with a, jet-propelled pipe 13 is close to one side fixed mounting of fresh-keeping storehouse inner wall has actuating lever 12, fixed mounting has movable cam 15 on the fresh-keeping storehouse inner wall, actuating lever 12 and the inclined plane contact of movable cam 15, first fan 8 sends into quill shaft 10 with wind then by jet-propelled pipe 13 blowout, accelerate the circulation of air, drive quill shaft 10 through actuating mechanism 11 and rotate, quill shaft 10 drives jet-propelled pipe 13 and rotates, jet-propelled pipe 13 rotates and forms whirlwind, and simultaneously, through actuating lever 12, movable cam 15 makes jet-propelled pipe 13 angle constantly change with the cooperation of extension spring 14, the jet-propelled scope has been enlarged, make the circulation of air effect better.
The temperature and humidity adjusting device comprises a humidity sensor, a humidifier, a heating device and an air inlet pipe, wherein the humidity sensor, the humidifier, the heating device and the air inlet pipe are arranged in the fresh storage, and wet steam is supplied to the air inlet pipe.
The storage rack comprises two support frames 1, a mounting plate 2 and a placing rack for placing sweet potatoes, wherein the two support frames 1 are symmetrically arranged, the support frames 1 are preferably inverted V-shaped, an installation shaft 7 is rotatably connected between the two support frames 1, a first motor for driving the installation shaft 7 to rotate is fixedly arranged on one support frame 1, one end, far away from the first motor, of the installation shaft 7 penetrates and is rotatably connected with an air supply pipe 6, the air supply pipe 6 is communicated with an air outlet of a second fan, the second fan is preferably and fixedly arranged on the support frame 1, rotary tables are respectively and fixedly arranged at two ends of the installation shaft 7, the placing rack is connected and arranged between the two rotary tables and comprises arc-shaped rods 3, connecting shafts 5 and a rotating shaft 4, the two arc-shaped rods 3 are symmetrically arranged, and a plurality of connecting shafts 5 are fixedly connected between the two, arc pole 3 passes through connecting rod and 4 fixed connection of pivot rather than centre of a circle department, pivot 4 rotates rather than neighbouring carousel to be connected, installation axle 7 and the equal inside cavity of carousel and both inner chambers intercommunication, the fumarole has all evenly been seted up on the opposite face of installation axle 7 and two carousels, drives installation axle 7 through first motor and rotates, and installation axle 7 drives the carousel and rotates, can make the sweet potato move in the space internal motion of fresh-keeping storehouse, fully adapts to the environment in the whole fresh-keeping storehouse, reduces because the difference of the temperature of fresh-keeping storehouse different positions, humidity influences the fresh-keeping effect of different positions sweet potato, makes things convenient for the staff to get simultaneously and puts the sweet potato, improves the space utilization in fresh-keeping.
The preservative comprises the following raw materials in parts by weight: 3 parts of chitosan, 1 part of sodium pyrosulfate and propolis supercritical CO21 part of extract, 0.5 part of chitinase, 1 part of modified lignin and 0.4 part of citric acid.
The propolis is supercritical CO2The extract is prepared by carbon dioxide supercritical extraction, and the specific steps are as follows: freezing and pulverizing propolis raw material, and extracting with supercritical CO2Extracting under 30MPa in extraction tower at 35 deg.C for 3-5h, using 10% ethanol (volume concentration of ethanol is 70%), under 6MPa in separation tower at 40-50 deg.C, and discharging from separation tower to obtain propolis supercritical CO2And (3) extracting.
The preparation method of the modified lignin comprises the following steps: adding 1 weight part of aldehyde and 1 weight part of amino acid into an alkaline solution containing 40 weight parts of lignin, heating and reacting for 1 hour at 80 ℃, and obtaining the required modified lignin, wherein the lignin is a natural polyphenol polymer and has higher inoxidizability and light stability, a large number of active oxygen clusters are gathered on the surface, and when the lignin is contacted with bacteria, the active oxygen clusters can be released to induce the bacteria to generate oxidative stress reaction, so that the normal oxidation reduction physiological process of the bacteria is changed and the bacteria die, and the antibacterial activity of the lignin is further enhanced after modification, thereby improving the fresh-keeping effect.
Example 2
A sweet potato preservation method comprises the following steps:
1) and (3) constructing a fresh-keeping warehouse: the construction of the storehouse body adopts a brick concrete structure, the storage amount accounts for 70-80% of the total space, the wall bodies are provided with heat insulation materials, and active ventilation equipment and temperature and humidity adjusting equipment are arranged;
2) and (3) fresh-keeping warehouse treatment: smoking for 90min by adopting forage composed of dry wormwood, houttuynia cordata, semen cuscutae and the like in proportion, spraying potassium permanganate solution with the concentration of 0.15mol/L on the inner side wall, the ground and the top of the fresh-keeping warehouse after smoking is finished, sealing for 18 hours after spraying is finished, ventilating for 3 days, and exchanging air with the outside;
3) selecting sweet potatoes: selecting normal sweet potatoes without insect eyes, damage and deterioration;
4) and (3) sweet potato treatment: washing the selected sweet potatoes by a spraying mode, controlling the spraying water pressure at the washing temperature of 25 ℃ to prevent the potato skins from being damaged; placing the cleaned sweet potatoes on a sieve plate to drain water, then utilizing a fan with the air outlet temperature of 35 ℃ to air dry the water on the surfaces of the sweet potatoes, controlling the air outlet pressure and preventing the potato peels from being damaged; uniformly mixing the air-dried sweet potatoes with the preservative according to the weight ratio of 175:14, and taking care not to damage potato skins in the mixing process;
5) sweet potato placement: placing the processed sweet potatoes on a storage rack, laying a layer of straws at the positions of the storage rack where the sweet potatoes are placed, soaking the straws in the preservative for 1.5h, and drying;
6) daily management: controlling the temperature in the sweet potato fresh-keeping storehouse to be 13 ℃ and the relative humidity to be 80%, keeping the sweet potatoes ventilated during the storage period, carrying out spot inspection on the sweet potatoes every 2 weeks, and removing the sweet potatoes which are germinated or rotten in time.
Wherein, the length of the fresh-keeping storehouse is 35 meters, the width is 18 meters, and the height is 5 meters.
The active ventilation equipment comprises a hollow shaft 10, a driving mechanism 11 for driving the hollow shaft 10 to rotate, a first fan 8, an air injection pipe 13, a driving rod 12, a moving cam 15 and a tension spring 14, wherein the hollow shaft 10 is rotatably installed on one side wall of the preservation warehouse, the driving mechanism 11 is installed on the side wall of the preservation warehouse and is in driving connection with the hollow shaft 10, the driving mechanism 11 comprises a driving motor and a gear pair, the driving motor is fixedly installed on the side wall of the preservation warehouse, the driving motor is in driving connection with the hollow shaft 10 through the gear pair, one end of the hollow shaft 10, which is positioned in the preservation warehouse, is annularly hinged with a plurality of air injection pipes 13, a hose is connected between the hollow shaft 10 and the air injection pipe 13, the tension spring 14 is also connected between the air injection pipe 13 and the hollow shaft 10, the other end of the hollow shaft 10 penetrates and is in rotating connection with a, jet-propelled pipe 13 is close to one side fixed mounting of fresh-keeping storehouse inner wall has actuating lever 12, fixed mounting has movable cam 15 on the fresh-keeping storehouse inner wall, actuating lever 12 and the inclined plane contact of movable cam 15, first fan 8 sends into quill shaft 10 with wind then by jet-propelled pipe 13 blowout, accelerate the circulation of air, drive quill shaft 10 through actuating mechanism 11 and rotate, quill shaft 10 drives jet-propelled pipe 13 and rotates, jet-propelled pipe 13 rotates and forms whirlwind, and simultaneously, through actuating lever 12, movable cam 15 makes jet-propelled pipe 13 angle constantly change with the cooperation of extension spring 14, the jet-propelled scope has been enlarged, make the circulation of air effect better.
The temperature and humidity adjusting device comprises a humidity sensor, a humidifier, a heating device and an air inlet pipe, wherein the humidity sensor, the humidifier, the heating device and the air inlet pipe are arranged in the fresh storage, and wet steam is supplied to the air inlet pipe.
The storage rack comprises two support frames 1, a mounting plate 2 and a placing rack for placing sweet potatoes, wherein the two support frames 1 are symmetrically arranged, the support frames 1 are preferably inverted V-shaped, an installation shaft 7 is rotatably connected between the two support frames 1, a first motor for driving the installation shaft 7 to rotate is fixedly arranged on one support frame 1, one end, far away from the first motor, of the installation shaft 7 penetrates and is rotatably connected with an air supply pipe 6, the air supply pipe 6 is communicated with an air outlet of a second fan, the second fan is preferably and fixedly arranged on the support frame 1, rotary tables are respectively and fixedly arranged at two ends of the installation shaft 7, the placing rack is connected and arranged between the two rotary tables and comprises arc-shaped rods 3, connecting shafts 5 and a rotating shaft 4, the two arc-shaped rods 3 are symmetrically arranged, and a plurality of connecting shafts 5 are fixedly connected between the two, arc pole 3 passes through connecting rod and 4 fixed connection of pivot rather than centre of a circle department, pivot 4 rotates rather than neighbouring carousel to be connected, installation axle 7 and the equal inside cavity of carousel and both inner chambers intercommunication, the fumarole has all evenly been seted up on the opposite face of installation axle 7 and two carousels, drives installation axle 7 through first motor and rotates, and installation axle 7 drives the carousel and rotates, can make the sweet potato move in the space internal motion of fresh-keeping storehouse, fully adapts to the environment in the whole fresh-keeping storehouse, reduces because the difference of the temperature of fresh-keeping storehouse different positions, humidity influences the fresh-keeping effect of different positions sweet potato, makes things convenient for the staff to get simultaneously and puts the sweet potato, improves the space utilization in fresh-keeping.
The preservative comprises the following raw materials in parts by weight: 3.5 parts of chitosan, 1.5 parts of sodium pyrosulfate and propolis supercritical CO 22 parts of extract, 1 part of chitinase, 1.5 parts of modified lignin and 0.7 part of citric acid.
The propolis is supercritical CO2The extract is prepared by carbon dioxide supercritical extraction, and the specific steps are as follows: freezing and pulverizing propolis raw material, and extracting with supercritical CO2Extracting under 35MPa in extraction tower at 40 deg.C for 4 hr, using 15% ethanol as entrainer, 75% ethanol volume concentration, 7MPa in separation tower at 45 deg.C, and discharging from separation tower to obtain propolis supercritical CO2And (3) extracting.
The preparation method of the modified lignin comprises the following steps: adding 3 parts by weight of aldehyde and 3 parts by weight of amino acid into an alkaline solution containing 45 parts by weight of lignin, heating and reacting for 2 hours at 100 ℃ to obtain the required modified lignin, wherein the lignin is a natural polyphenol polymer and has high oxidation resistance and light stability, a large number of active oxygen clusters are gathered on the surface, and when the lignin is contacted with bacteria, the active oxygen clusters can be released to induce the bacteria to generate oxidative stress reaction, so that the normal oxidation reduction physiological process of the bacteria is changed and the bacteria die, and the antibacterial activity of the lignin is further enhanced after modification, thereby improving the fresh-keeping effect.
Example 3
A sweet potato preservation method comprises the following steps:
1) and (3) constructing a fresh-keeping warehouse: the construction of the storehouse body adopts a brick concrete structure, the storage amount accounts for 70-80% of the total space, the wall bodies are provided with heat insulation materials, and active ventilation equipment and temperature and humidity adjusting equipment are arranged;
2) and (3) fresh-keeping warehouse treatment: smoking for 120min by adopting a forage composed of dry wormwood, houttuynia cordata and semen cuscutae in equal proportion, after smoking is finished, spraying a potassium permanganate solution with the concentration of 0.2mol/L on the inner side wall, the ground and the top of the fresh-keeping warehouse, after spraying is finished, sealing for 24 hours, ventilating for 3 days, and exchanging air with the outside;
3) selecting sweet potatoes: selecting normal sweet potatoes without insect eyes, damage and deterioration;
4) and (3) sweet potato treatment: washing the selected sweet potatoes by a spraying mode, controlling the spraying water pressure at the washing temperature of 30 ℃ to prevent the potato skins from being damaged; placing the cleaned sweet potatoes on a sieve plate to drain water, then utilizing a fan with the air outlet temperature of 40 ℃ to air dry the water on the surfaces of the sweet potatoes, controlling the air outlet pressure and preventing the potato peels from being damaged; uniformly mixing the air-dried sweet potatoes with the preservative according to the weight ratio of 200:18, and paying attention to the fact that potato skins are not damaged in the mixing process;
5) sweet potato placement: placing the processed sweet potatoes on a storage rack, laying a layer of straws at the positions of the storage rack where the sweet potatoes are placed, soaking the straws in the preservative for 2 hours, and drying;
6) daily management: controlling the temperature in the sweet potato fresh-keeping storehouse at 15 ℃ and the relative humidity at 85%, keeping the sweet potatoes ventilated during the storage period, performing spot inspection on the sweet potatoes every 2 weeks, and removing the germinated or rotten sweet potatoes in time.
Wherein, the length of the fresh-keeping storehouse is 40 meters, the width is 20 meters, and the height is 6 meters.
The active ventilation equipment comprises a hollow shaft 10, a driving mechanism 11 for driving the hollow shaft 10 to rotate, a first fan 8, an air injection pipe 13, a driving rod 12, a moving cam 15 and a tension spring 14, wherein the hollow shaft 10 is rotatably installed on one side wall of the preservation warehouse, the driving mechanism 11 is installed on the side wall of the preservation warehouse and is in driving connection with the hollow shaft 10, the driving mechanism 11 comprises a driving motor and a gear pair, the driving motor is fixedly installed on the side wall of the preservation warehouse, the driving motor is in driving connection with the hollow shaft 10 through the gear pair, one end of the hollow shaft 10, which is positioned in the preservation warehouse, is annularly hinged with a plurality of air injection pipes 13, a hose is connected between the hollow shaft 10 and the air injection pipe 13, the tension spring 14 is also connected between the air injection pipe 13 and the hollow shaft 10, the other end of the hollow shaft 10 penetrates and is in rotating connection with a, jet-propelled pipe 13 is close to one side fixed mounting of fresh-keeping storehouse inner wall has actuating lever 12, fixed mounting has movable cam 15 on the fresh-keeping storehouse inner wall, actuating lever 12 and the inclined plane contact of movable cam 15, first fan 8 sends into quill shaft 10 with wind then by jet-propelled pipe 13 blowout, accelerate the circulation of air, drive quill shaft 10 through actuating mechanism 11 and rotate, quill shaft 10 drives jet-propelled pipe 13 and rotates, jet-propelled pipe 13 rotates and forms whirlwind, and simultaneously, through actuating lever 12, movable cam 15 makes jet-propelled pipe 13 angle constantly change with the cooperation of extension spring 14, the jet-propelled scope has been enlarged, make the circulation of air effect better.
The temperature and humidity adjusting device comprises a humidity sensor, a humidifier, a heating device and an air inlet pipe, wherein the humidity sensor, the humidifier, the heating device and the air inlet pipe are arranged in the fresh storage, and wet steam is supplied to the air inlet pipe.
The storage rack comprises two support frames 1, a mounting plate 2 and a placing rack for placing sweet potatoes, wherein the two support frames 1 are symmetrically arranged, the support frames 1 are preferably inverted V-shaped, an installation shaft 7 is rotatably connected between the two support frames 1, a first motor for driving the installation shaft 7 to rotate is fixedly arranged on one support frame 1, one end, far away from the first motor, of the installation shaft 7 penetrates and is rotatably connected with an air supply pipe 6, the air supply pipe 6 is communicated with an air outlet of a second fan, the second fan is preferably and fixedly arranged on the support frame 1, rotary tables are respectively and fixedly arranged at two ends of the installation shaft 7, the placing rack is connected and arranged between the two rotary tables and comprises arc-shaped rods 3, connecting shafts 5 and a rotating shaft 4, the two arc-shaped rods 3 are symmetrically arranged, and a plurality of connecting shafts 5 are fixedly connected between the two, arc pole 3 passes through connecting rod and 4 fixed connection of pivot rather than centre of a circle department, pivot 4 rotates rather than neighbouring carousel to be connected, installation axle 7 and the equal inside cavity of carousel and both inner chambers intercommunication, the fumarole has all evenly been seted up on the opposite face of installation axle 7 and two carousels, drives installation axle 7 through first motor and rotates, and installation axle 7 drives the carousel and rotates, can make the sweet potato move in the space internal motion of fresh-keeping storehouse, fully adapts to the environment in the whole fresh-keeping storehouse, reduces because the difference of the temperature of fresh-keeping storehouse different positions, humidity influences the fresh-keeping effect of different positions sweet potato, makes things convenient for the staff to get simultaneously and puts the sweet potato, improves the space utilization in fresh-keeping.
The preservative comprises the following raw materials in parts by weight: 4 parts of chitosan, 2 parts of sodium pyrosulfate and propolis supercritical CO 23 parts of extract, 1.5 parts of chitinase, 2 parts of modified lignin and lemon0.1 part of citric acid.
The propolis is supercritical CO2The extract is prepared by carbon dioxide supercritical extraction, and the specific steps are as follows: freezing and pulverizing propolis raw material, and extracting with supercritical CO2Extracting under 40MPa of pressure in the extraction tower at 45 ℃ for 5h, wherein the entrainer is 20% ethanol of the weight of the feed in the extraction tower, the volume concentration of the ethanol is 80%, the pressure in the separation tower is 8MPa, the separation temperature is 50 ℃, and the propolis supercritical CO is obtained by discharging from the separation tower2And (3) extracting.
The preparation method of the modified lignin comprises the following steps: adding 5 parts by weight of aldehyde and 5 parts by weight of amino acid into an alkaline solution containing 50 parts by weight of lignin, heating at 120 ℃ for reaction for 3 hours to obtain the required modified lignin, wherein the lignin is a natural polyphenol polymer and has higher inoxidizability and light stability, a large number of active oxygen clusters are gathered on the surface, and when the lignin is contacted with bacteria, the active oxygen clusters are released to induce the bacteria to generate oxidative stress reaction, so that the normal oxidation reduction physiological process of the bacteria is changed and the bacteria die, and the antibacterial activity of the lignin is further enhanced after modification, thereby improving the fresh-keeping effect.
Comparative example 1
On the basis of the embodiment 2, the forage composed of dry wormwood, houttuynia cordata and semen cuscutae in equal proportion is not used for smoking;
comparative example 2
On the basis of example 2, only wormwood is used for smoking;
comparative example 3
On the basis of the embodiment 2, the straw is not soaked by the preservative;
comparative example 4
On the basis of the embodiment 2, the straw is soaked in the preservative which does not contain the modified lignin;
comparative example 5
On the basis of the embodiment 2, the storage rack of the embodiment 2 is replaced by a common storage rack;
comparative example 6
On the basis of the embodiment 2, the active ventilation device of the embodiment 2 is replaced by common fan ventilation.
Control group
The traditional preservation method.
The harvested sweet potatoes are divided into 10 groups by selecting normal sweet potatoes without insect eyes, damage and deterioration, each group is 100 jin, the sweet potatoes are respectively stored by adopting the methods of examples 1-3, comparative examples 1-6 and a control group, the storage temperature is kept at 7-12 ℃, and the storage effect is as follows:
from the above results, through the smoking of forage composed of dry wormwood, houttuynia cordata, dodder and the like, the wormwood and the houttuynia cordata have synergistic effect, the disinfection and sterilization environment in the fresh-keeping warehouse can be further ensured, the fresh-keeping of sweet potatoes is facilitated, through adding the preservative containing components such as modified lignin and the like, the fresh-keeping effect is excellent, the fresh-keeping time of sweet potatoes is further prolonged, through the active ventilation equipment in the application, the hollow shaft is driven to rotate through the driving mechanism, the hollow shaft drives the air injection pipe to rotate, the air injection pipe rotates to form cyclone, meanwhile, the angle of the air injection pipe is continuously changed through the matching of the driving rod, the moving cam and the tension spring, the air injection range is expanded, the air circulation effect is better, the fresh-keeping of sweet potatoes is facilitated, through the arrangement of the storage rack, the mounting shaft is driven to rotate, can make the sweet potato move in the space in fresh-keeping storehouse, fully adapt to the environment in the whole fresh-keeping storehouse, reduce because the fresh-keeping effect of the different positions sweet potato of temperature, the difference of humidity of the different positions in fresh-keeping storehouse influences, make things convenient for the staff to get simultaneously and put the sweet potato, improve the space utilization in fresh-keeping storehouse.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (7)
1. A sweet potato preservation method is characterized by comprising the following steps:
1) and (3) constructing a fresh-keeping warehouse: the construction of the storehouse body adopts a brick concrete structure, the storage amount accounts for 70-80% of the total space, the wall bodies are provided with heat insulation materials, and active ventilation equipment and temperature and humidity adjusting equipment are arranged;
2) and (3) fresh-keeping warehouse treatment: smoking for 60-120min by adopting a forage composed of dry wormwood, houttuynia cordata and semen cuscutae in equal ratio, after smoking is finished, spraying a potassium permanganate solution with the concentration of 0.1-0.2mol/L on the inner side wall, the ground and the top of the fresh-keeping warehouse, after spraying is finished, sealing for 12-24 hours, ventilating for 3 days, and exchanging air with the outside;
3) selecting sweet potatoes: selecting normal sweet potatoes without insect eyes, damage and deterioration;
4) and (3) sweet potato treatment: washing the selected sweet potatoes by a spraying mode, controlling the spraying water pressure at the washing temperature of 20-30 ℃ to prevent the potato skins from being damaged; placing the cleaned sweet potato on a sieve plate, draining off water, air-drying the water on the surface of the sweet potato by using a fan with the air-out temperature of 30-40 ℃, and controlling the air-out pressure to prevent the potato skin from being damaged; uniformly mixing the air-dried sweet potatoes and the preservative according to the weight ratio of 150-;
5) sweet potato placement: placing the processed sweet potatoes on a storage rack, laying a layer of straws at the positions of the storage rack where the sweet potatoes are placed, soaking the straws in the preservative for 1-2h, and drying;
6) daily management: controlling the temperature in the sweet potato fresh-keeping storehouse to be 10-15 ℃ and the relative humidity to be 75-85%, keeping the sweet potato ventilated during the storage period, carrying out spot inspection on the sweet potatoes every 2 weeks, and timely removing the germinated or rotten sweet potatoes.
2. The method for keeping sweet potatoes fresh as claimed in claim 1, wherein the length of the fresh-keeping storehouse is 30-40m, the width of the fresh-keeping storehouse is 15-20 m, and the height of the fresh-keeping storehouse is 4-6 m.
3. The sweet potato preservation method according to claim 1, wherein the active ventilation device comprises a hollow shaft (10), a driving mechanism (11) for driving the hollow shaft (10) to rotate, a first fan (8), an air injection pipe (13), a driving rod (12), a moving cam (15) and a tension spring (14), the hollow shaft (10) is rotatably mounted on one side wall of the preservation warehouse, the driving mechanism (11) is mounted on the side wall of the preservation warehouse and is in driving connection with the hollow shaft (10), the driving mechanism (11) comprises a driving motor and a gear pair, the driving motor is fixedly mounted on the side wall of the preservation warehouse, the driving motor is in driving connection with the hollow shaft (10) through the gear pair, one end of the hollow shaft (10) in the preservation warehouse is hinged with a plurality of air injection pipes (13) in an annular manner, a hose is connected between the hollow shaft (10) and the air injection pipes (13), and the tension spring (14) is further, the other end of the hollow shaft (10) penetrates and is rotatably connected with a connecting air pipe (9), the air outlet of the connecting air pipe (9) and the air outlet of the first fan (8) are communicated, the first fan (8) is fixedly installed on the outer wall of the fresh-keeping warehouse, one side of the air injection pipe (13) close to the inner wall of the fresh-keeping warehouse is fixedly provided with a driving rod (12), the inner wall of the fresh-keeping warehouse is fixedly provided with a moving cam (15), and the driving rod (12) is in contact with the inclined plane of the moving cam (15).
4. The sweet potato preservation method according to claim 1, wherein the temperature and humidity control device comprises a humidity sensor, a humidifier, a heating device and an air inlet pipe for introducing wet steam, which are arranged inside the preservation warehouse.
5. The sweet potato preservation method according to claim 1, characterized in that the storage rack comprises two support frames (1), two mounting plates (2) and two placing racks for placing sweet potatoes, the two support frames (1) are symmetrically arranged, the support frames (1) are preferably in an inverted V shape, a mounting shaft (7) is rotatably connected between the two support frames (1), a first motor for driving the mounting shaft (7) to rotate is fixedly installed on one support frame (1), an air supply pipe (6) is penetrated and rotatably connected to one end of the mounting shaft (7) far away from the first motor, the air supply pipe (6) is communicated with an air outlet of a second fan, turntables are respectively and fixedly installed at two ends of the mounting shaft (7), the placing racks are connected and installed between the two turntables, each placing rack comprises an arc-shaped rod (3), a connecting shaft (5) and a rotating shaft (4), the arc-shaped rods (3) are symmetrically arranged, many connecting axles (5) of equidistance interval fixedly connected with between two arc poles (3), arc pole (3) are through pivot (4) fixed connection of connecting rod rather than centre of a circle department, pivot (4) rotate rather than neighbouring carousel and are connected, installation axle (7) and the equal inside cavity of carousel and both inner chambers intercommunication, the fumarole has all evenly been seted up on the opposite face of installation axle (7) and two carousels.
6. The sweet potato preservation method according to claim 1, wherein the preservative comprises the following raw materials in parts by weight: 3-4 parts of chitosan, 1-2 parts of sodium pyrosulfate and propolis supercritical CO21-3 parts of extract, 0.5-1.5 parts of chitinase, 1-2 parts of modified lignin and 0.4-1 part of citric acid.
7. The sweet potato preservation method according to claim 6, wherein the propolis is supercritical CO2The extract is prepared by carbon dioxide supercritical extraction, and the specific steps are as follows: freezing and pulverizing propolis raw material, and extracting with supercritical CO2Extracting under 30-40MPa in extraction tower at 35-45 deg.C for 3-5 hr with entrainer of 10-20 wt% ethanol, ethanol volume concentration of 70-80%, separation tower pressure of 6-8MPa and separation temperature of 40-50 deg.C, and discharging from separation tower to obtain propolis supercritical CO2And (3) extracting.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104286155A (en) * | 2014-10-24 | 2015-01-21 | 烟台朗博商贸有限公司 | Grapefruit preservative |
| CN104814118A (en) * | 2014-10-08 | 2015-08-05 | 合肥丰昇园农业科技有限公司 | Grape preservative |
| CN204620352U (en) * | 2015-01-20 | 2015-09-09 | 王志琼 | A kind of rotation apparatus for drying |
| CN105819966A (en) * | 2016-03-23 | 2016-08-03 | 崇义县亿诚农业发展有限公司 | Fungicidal disease-resistant anti-insect anti-sunburn protecting agent for navel orange and use method of protecting agent |
| CN108077417A (en) * | 2017-12-31 | 2018-05-29 | 杭州珍鑫源食品有限公司 | A kind of sweet potato storing method of preservative |
| CN108208137A (en) * | 2017-12-29 | 2018-06-29 | 河南健特生物科技集团有限公司 | Antimicrobial antistaling agent for fresh-keeping of vegetables and its preparation method and application |
| CN109988317A (en) * | 2019-03-20 | 2019-07-09 | 华南理工大学 | A kind of amino-acid modified lignin broad spectrum antimicrobial agent and the preparation method and application thereof |
| CN209983472U (en) * | 2019-05-14 | 2020-01-24 | 天津润澳普思气调保鲜科技有限公司 | Controlled atmosphere preservation equipment with sterilization function |
| CN210036164U (en) * | 2019-05-27 | 2020-02-07 | 赣州市南康区新宝新型建材有限公司 | Air drying equipment for production of environment-friendly bricks |
| CN210745732U (en) * | 2019-08-26 | 2020-06-12 | 上海福升威尔智能控制技术股份有限公司 | Industrial computer case with internal dust removal function |
| CN210746987U (en) * | 2019-10-25 | 2020-06-16 | 康来福农产品集团有限公司 | Intelligent aeration cooling system of fruit and vegetable fresh-keeping storehouse |
| CN111420932A (en) * | 2020-05-18 | 2020-07-17 | 南京奥亚美电子科技有限公司 | Multi-direction dust collecting equipment of instrument |
-
2021
- 2021-01-08 CN CN202110025445.5A patent/CN112806433A/en not_active Withdrawn
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104814118A (en) * | 2014-10-08 | 2015-08-05 | 合肥丰昇园农业科技有限公司 | Grape preservative |
| CN104286155A (en) * | 2014-10-24 | 2015-01-21 | 烟台朗博商贸有限公司 | Grapefruit preservative |
| CN204620352U (en) * | 2015-01-20 | 2015-09-09 | 王志琼 | A kind of rotation apparatus for drying |
| CN105819966A (en) * | 2016-03-23 | 2016-08-03 | 崇义县亿诚农业发展有限公司 | Fungicidal disease-resistant anti-insect anti-sunburn protecting agent for navel orange and use method of protecting agent |
| CN108208137A (en) * | 2017-12-29 | 2018-06-29 | 河南健特生物科技集团有限公司 | Antimicrobial antistaling agent for fresh-keeping of vegetables and its preparation method and application |
| CN108077417A (en) * | 2017-12-31 | 2018-05-29 | 杭州珍鑫源食品有限公司 | A kind of sweet potato storing method of preservative |
| CN109988317A (en) * | 2019-03-20 | 2019-07-09 | 华南理工大学 | A kind of amino-acid modified lignin broad spectrum antimicrobial agent and the preparation method and application thereof |
| CN209983472U (en) * | 2019-05-14 | 2020-01-24 | 天津润澳普思气调保鲜科技有限公司 | Controlled atmosphere preservation equipment with sterilization function |
| CN210036164U (en) * | 2019-05-27 | 2020-02-07 | 赣州市南康区新宝新型建材有限公司 | Air drying equipment for production of environment-friendly bricks |
| CN210745732U (en) * | 2019-08-26 | 2020-06-12 | 上海福升威尔智能控制技术股份有限公司 | Industrial computer case with internal dust removal function |
| CN210746987U (en) * | 2019-10-25 | 2020-06-16 | 康来福农产品集团有限公司 | Intelligent aeration cooling system of fruit and vegetable fresh-keeping storehouse |
| CN111420932A (en) * | 2020-05-18 | 2020-07-17 | 南京奥亚美电子科技有限公司 | Multi-direction dust collecting equipment of instrument |
Non-Patent Citations (1)
| Title |
|---|
| 胡福良等, 金盾出版社 * |
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Address after: 236500, 6km from jietao Road, Jieshou City, Fuyang City, Anhui Province Applicant after: ANHUI FENG XU AGRICULTURE Co.,Ltd. Address before: 236500 6 km jietao Road, Jieshou City, Bozhou City, Anhui Province Applicant before: ANHUI FENG XU AGRICULTURE Co.,Ltd. |
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