CN106562172A - Protective agent composition for liquid nitrogen cryogenic quick-freezing of camarons - Google Patents
Protective agent composition for liquid nitrogen cryogenic quick-freezing of camarons Download PDFInfo
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- CN106562172A CN106562172A CN201610949828.0A CN201610949828A CN106562172A CN 106562172 A CN106562172 A CN 106562172A CN 201610949828 A CN201610949828 A CN 201610949828A CN 106562172 A CN106562172 A CN 106562172A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
- A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
- A23L3/3463—Organic compounds; Microorganisms; Enzymes
- A23L3/3472—Compounds of undetermined constitution obtained from animals or plants
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
- A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
- A23L3/3463—Organic compounds; Microorganisms; Enzymes
- A23L3/3481—Organic compounds containing oxygen
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
- A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
- A23L3/3463—Organic compounds; Microorganisms; Enzymes
- A23L3/3553—Organic compounds containing phosphorus
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
- A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
- A23L3/3463—Organic compounds; Microorganisms; Enzymes
- A23L3/3562—Sugars; Derivatives thereof
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/36—Freezing; Subsequent thawing; Cooling
- A23L3/37—Freezing; Subsequent thawing; Cooling with addition of or treatment with chemicals
Abstract
The invention relates to the technical field of food processing and storage and discloses a protective agent composition for liquid nitrogen cryogenic quick-freezing of camarons. The protective agent composition comprises a low-temperature protective agent for soaking the camarons before liquid nitrogen quick-freezing, and an ice glazing agent for soaking the camarons after liquid nitrogen quick-freezing. The low-temperature protective agent comprises sodium polyphosphate, sodium erythorbate, sodium citrate, sorbitol, bletilla extracts and water. The ice glaze agent comprises trehalose, sodium alginate, bletilla extracts and ice water. The protective agent composition comprises the low-temperature protective agent and the ice glaze agent and is matched with the liquid nitrogen cryogenic quick-freezing method, ice crystals formed by products subjected to cryogenic quick-freezing are small, the drying loss is low, the integrity of product cells is guaranteed, the original color, freshness and flavor can be maintained, the shelf life of the products is greatly prolonged, and the freshness preservation degree is high.
Description
Technical field
The present invention relates to food processing storage technique field, more particularly to a kind of guarantor for speckle section shrimp liquid nitrogen deep quick-freezing
Shield agent compositionss.
Background technology
Speckle section shrimp, is that one kind has better nutritivity value and one also known as ring shrimp, tiger shrimp, grass shrimp, black Tiger Prawns, flower shrimp
Determine the marine products shrimps of health-care effect, great value of exploiting and utilizing.Distributed areas are very wide, by South Japan, South Korea, China edge
Sea, Philippine, Indonesia, Australia, Thailand, India are distributed to eastern Africa bank.Compared with some other aquatic products,
Its fishing for, transport, process and storage in it is easily putrid and deteriorated, shrimps fish for it is latter as dead quickly, the quantity of the catch of shrimp
Greatly, capture time is relatively concentrated, and if the distance of capture point and processing stand is distant, is just difficult to fresh-keeping, serious shadow
The quality of speckle section shrimp is rung.With the improvement of people's living standards, its freshness is required also gradually stepping up, therefore, find one
Plant green, safe and efficient preservation method significant.
At present, the conventional preservation method of speckle section shrimp has using biological preservation agent solution is fresh-keeping, low-temperature preservation, controlled atmosphere
All there is certain limitation Deng, these methods, the fresh-keeping effect of prawn is undesirable.Freezing is the more conventional guarantor of aquatic products
Tibetan method, the aquatic products freeze cutting product of China account for the 60% of aquatic products total amount.Traditional freezing method have air freezing process,
Tunnel freezing process and flat board freezing process, these freezing method freezing speeds are slow, and there is the growth of freezing process ice crystal can cause to produce
Juice loss phenomenon after the change of product organizational structure, freezing injury and defrosting is also quite serious, and storage time is shorter.Can not expire
The requirement of sufficient Penaeus monodon shelf life.Since 1960's, food industry Refrigeration Technique has breakthrough development, external
A series of quick-freezing of food being succeeded in developing and produce in batches.Liquid nitrogen flash freezer technology is a kind of new food product refrigeration method,
Exceeded the speed limit with it and frozen food and maintain the advantage of its high-quality and enjoy the favor of consumer and enterprise.Liquid nitrogen quick freezing, often
Minute can lower the temperature 7～l5 DEG C, and freezing speed is about faster 30～40 times than general freezing method.Make that product is intracellular almost not to be produced
Ice crystal, it is possible to decrease cell wall breaking and nutritional solution leak, quality better and nutrient component damages and destruction less, drying loss it is little.Liquid nitrogen flash freezer
Quite popular with consumers, in Hesperian super low temperature quick frozen food, consumption figure maximum is Rhizoma Solani tuber osi, next to that vegetable,
Fish, rice juice etc..But when freezing speed is too fast, during more than certain limit, food material can occur freezing crack.This is mainly
Caused due to too fast cooldown rate, because cooldown rate is too fast, heat has little time to transmit or transmit relatively slow, causes in sample
The outer temperature difference is larger, generates thermal stress.Freezing speed is faster, and low temperature freezing-disaster is more serious, and food can be made to cause cracking.Low temperature freezing-disaster
The quality of frozen food is had a strong impact on, or even makes it lose commodity value, it will cause the great wasting of resources and economic loss.
Therefore need to develop a kind of protective agent for being exclusively used in speckle section shrimp liquid nitrogen deep quick-freezing, can protect for speckle section shrimp products
Shield, prevents its protein freeze denaturalization and dehydration bursting by freezing, improves the low-temperature resistance freeze injury ability of speckle section shrimp products, reduce frozen product with
The quality discrepancy of fresh goods.
The content of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of protective agent group for speckle section shrimp liquid nitrogen deep quick-freezing
Compound.The protective agent compositionss of the present invention include cryoprotective agent and ice clothing agent, coordinate with liquid nitrogen deep method of freezing, can make
The ice crystal of the product formation of cryogenic quick-freezing process is little, and drying loss is low, not only ensure that the integrity of product cell, moreover it is possible to keep it former
Some color and lusters, freshness, local flavor, greatly extend its shelf life, and fresh-keeping degree is good.
The present invention concrete technical scheme be：
A kind of protective agent compositionss for speckle section shrimp liquid nitrogen deep quick-freezing, including for before liquid nitrogen flash freezer soak speckle section shrimp it is low
Warm protective agent and the ice clothing agent for soaking speckle section shrimp after liquid nitrogen flash freezer.
The low temperature protectant solution includes sodium polyphosphate, different Vc sodium, sodium citrate, Sorbitol, bletilla striata extract
And water.
Ice clothing agent includes trehalose, sodium alginate, bletilla striata extract and frozen water.
The present invention soaks speckle section shrimp in low temperature protectant solution before quick-freezing, and cryoprotective agent can exist to speckle section shrimp
Protected under low temperature environment, prevented because Quick freezing is dehydrated and embrittlement in a large number, it is ensured that Macrobrachium nipponensis quality.
Trehalose, sodium alginate has outstanding water retention, prevents speckle section shrimp rapid dehydration, extends the timeliness of ice clothing.
Bletilla striata extract pure natural is harmless, with trehalose, sodium alginate under specific proportioning, at low temperature with outstanding film property,
Enable the agent of ice clothing rapid in product surface film formation at low temp, water lock.Simultaneously bletilla striata extract also has antibacterial functions, can press down
Make the breeding of some antibacterials and microorganism.
Preferably, in the low temperature protectant solution, the mass concentration of the sodium polyphosphate is 0.1%-0.5%, different
The mass concentration of Vc sodium is 0.05-0.3%, and the mass concentration of sodium citrate is 0.1-0.3%, and the mass concentration of Sorbitol is 1-
5%, the mass concentration of bletilla striata extract is 0.5-1.5%.
Preferably, mass concentration of the trehalose in frozen water described in the ice clothing agent is 2-4%, the sodium alginate
Mass concentration in frozen water is 0.1-0.5%, and mass concentration of the bletilla striata extract in frozen water is 1-3%.
Preferably, the preparation method of the bletilla striata extract is：Take Pseudobulbus Bletillae (Rhizoma Bletillae) powder and add it to the water of 3-5 times of quality
In, 95-105 DEG C is heated to, fried 30-60min is filtered；Take filtering residue repetition fried once, filter, merge filtrate twice, to
Add the dehydrated alcohol of same volume in filtrate, 4-6h is stood under room temperature, filter, take solid, after drying, grinding the Pseudobulbus Bletillae (Rhizoma Bletillae) is obtained
Extract.
Bletilla striata extract obtained in said method is dissolved in after water in thick liquid, with trehalose.Sodium alginate presses specific ratio
Good film-forming property after example compounding.
Preferably, also including antibacterial peptide in the ice clothing agent.
The broad-spectrum antibacterial property of antibacterial peptide is good, can effective bacteria growing inhibiting, and itself and Pseudobulbus Bletillae (Rhizoma Bletillae) extract, trehalose.Sea
After sodium alginate compounding and film forming, the dispersibility, stationarity in film layer is good, is conducive to giving full play to for antibiotic property.
Preferably, mass concentration of the antibacterial peptide in frozen water is 0.01-0.02%.
A kind of method of speckle section shrimp liquid nitrogen deep quick-freezing fresh-keeping, comprises the following steps：
（1）Cleaning：Speckle section shrimp is selected, is cleaned with water, water temperature is controlled at 0-10 DEG C；
（2）Dewatering：The speckle section shrimp for cleaning up is put in water logging device, dewatering 2-4min is stood；
（3）Immersion：Speckle section shrimp after dewatering is soaked in cryoprotective agent；
Unlike the prior art, speckle section shrimp belongs to high-grade aquatic products, for guaranteed quality and class, typically it is not carried out
Peel off, and in order to keep the freshness of shrimp, soak time can not be too long（General peeled shrimp soak time is in more than 1h）.Therefore
It is required that low temperature protectant solution at short notice can rapidly in Crusta Penaeus seu Panulirus attachment and film forming.The present invention is made from bletilla striata extract
For thickening agent, obtaining low temperature protectant solution can adhere to and rapid film formation on Crusta Penaeus seu Panulirus.
（4）Quick-freezing：Speckle section shrimp after immersion is put and is placed in the supporting sample tray of liquid nitrogen deep spray instant freezer, be put into
In liquid nitrogen deep quick freezing unit, fast frozen is carried out, adjustment multistage quick-freezing program is reduced to -20 for 1-3min from ambient temperature
~ -40 DEG C, 2-4min is reduced to -90 ~ -60 DEG C, is then incubated 12-17min and completes quick-freezing；
（5）Plating water glaze：Speckle section shrimp after quick-freezing impregnated in 5-10s in 0-10 DEG C of ice clothing agent, dewatering 1-3min is then taken out；
（6）Vacuum packaging：Speckle section shrimp after plating water glaze is vacuum-packed；
（7）Freezen protective：During speckle section shrimp after vacuum packaging is packaged in into carton or bubble chamber, -20 ~ -30 DEG C cold is stored in
In storehouse.
The present invention, as the cryogenic quick-freezing method of coolant, forms the high-quality speckle section shrimp deep cooling of complete set using using liquid nitrogen
Quick-freezing fresh-keeping technique.Using suitable cryoprotective agent, using multistage quick-freezing, first stage shrimp samples first are carried out tentatively
The laggard scanning frequency of pre-cooling is frozen, and finally with reference to plating water glaze process, the product formation of cryogenic quick-freezing process is made under each side synergism
Ice crystal is little, and drying loss is low, not only ensure that the integrity of product cell, moreover it is possible to keep its original color and luster, freshness, local flavor, greatly
Extend its shelf life, fresh-keeping degree is good, can preservation more than 1 year.After the more conventional freezing mode of handled speckle section shrimp is processed
Sample quality at 2-4 month more preferably, be close to fresh sample quality.
Preferably, step（1）When selecting, the normal speckle section shrimp of fresh, bright, abnormal smells from the patient is selected.
Preferably, step（3）Middle speckle section shrimp soaks 4-8min in low temperature protectant solution.
It is compared with the prior art, the invention has the beneficial effects as follows：The protective agent compositionss of the present invention include cryoprotective agent
With ice clothing agent, with liquid nitrogen deep method of freezing coordinate, can make cryogenic quick-freezing process product formation ice crystal it is little, drying loss is low,
Not only ensure that the integrity of product cell, moreover it is possible to keep its original color and luster, freshness, local flavor, greatly extend its shelf
Phase, fresh-keeping degree is good.
Description of the drawings
Fig. 1 is speckle section shrimp total volatile basic nitrogen（TVBN）Comparison diagram.
Specific embodiment
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of protective agent compositionss for speckle section shrimp liquid nitrogen deep quick-freezing, including cryoprotective agent and ice clothing agent.
The low temperature protectant solution includes sodium polyphosphate, different Vc sodium, sodium citrate, Sorbitol, bletilla striata extract
And water.The mass concentration of the sodium polyphosphate is 0.3%, and the mass concentration of different Vc sodium is 0.1%, the mass concentration of sodium citrate
For 0.1%, the mass concentration of Sorbitol is 2%, and the mass concentration of bletilla striata extract is 1%.
Ice clothing agent includes trehalose, sodium alginate, bletilla striata extract and frozen water.Trehalose described in the ice clothing agent
Mass concentration in frozen water is 2%, and mass concentration of the sodium alginate in frozen water is 0.1%, and the bletilla striata extract exists
Mass concentration in frozen water is 2%.
The preparation method of the bletilla striata extract is：Take Pseudobulbus Bletillae (Rhizoma Bletillae) powder and add it in the water of 4 times of quality, be heated to
100 DEG C, fried 45min is filtered；Take filtering residue repetition fried once, filter, merge filtrate twice, in filtrate consubstantiality is added
5h is stood under long-pending dehydrated alcohol, room temperature, is filtered, take solid, after drying, grinding bletilla striata extract is obtained.
Embodiment 2
A kind of protective agent compositionss for speckle section shrimp liquid nitrogen deep quick-freezing, including cryoprotective agent and ice clothing agent.
The low temperature protectant solution includes sodium polyphosphate, different Vc sodium, sodium citrate, Sorbitol, bletilla striata extract
And water.The mass concentration of the sodium polyphosphate is 0.5%, and the mass concentration of different Vc sodium is 0.05%, and the quality of sodium citrate is dense
Spend for 0.2%, the mass concentration of Sorbitol is 5%, the mass concentration of bletilla striata extract is 0.5%.
Ice clothing agent includes trehalose, sodium alginate, bletilla striata extract, antibacterial peptide and frozen water.Institute in the ice clothing agent
It is 3% to state mass concentration of the trehalose in frozen water, and mass concentration of the sodium alginate in frozen water is 0.3%, the Pseudobulbus Bletillae (Rhizoma Bletillae)
Mass concentration of the extract in frozen water is 1%.Mass concentration of the antibacterial peptide in frozen water is 0.015%.
In the present embodiment, the preparation method of the bletilla striata extract is：Take Pseudobulbus Bletillae (Rhizoma Bletillae) powder and add it to the water of 3 times of quality
In, 95 DEG C are heated to, fried 60min is filtered；Take filtering residue repetition fried once, filter, merge filtrate twice, in filtrate
The dehydrated alcohol of addition same volume, stands 4h under room temperature, filter, and takes solid, and after drying, grinding bletilla striata extract is obtained.
Embodiment 3
A kind of protective agent compositionss for speckle section shrimp liquid nitrogen deep quick-freezing, including cryoprotective agent and ice clothing agent.
The low temperature protectant solution includes sodium polyphosphate, different Vc sodium, sodium citrate, Sorbitol, bletilla striata extract
And water.The mass concentration of the sodium polyphosphate is 0.1%, and the mass concentration of different Vc sodium is 0.3%, the mass concentration of sodium citrate
For 0.3%, the mass concentration of Sorbitol is 1%, and the mass concentration of bletilla striata extract is 1.5%.
Ice clothing agent includes trehalose, sodium alginate, bletilla striata extract, antibacterial peptide and frozen water.Institute in the ice clothing agent
It is 4% to state mass concentration of the trehalose in frozen water, and mass concentration of the sodium alginate in frozen water is 0.1%, the Pseudobulbus Bletillae (Rhizoma Bletillae)
Mass concentration of the extract in frozen water is 1%.Mass concentration of the antibacterial peptide in frozen water is 0.01%.
In the present embodiment, the preparation method of the bletilla striata extract is：Take Pseudobulbus Bletillae (Rhizoma Bletillae) powder and add it to the water of 5 times of quality
In, 105 DEG C are heated to, fried 30min is filtered；Take filtering residue repetition fried once, filter, merge filtrate twice, in filtrate
The dehydrated alcohol of addition same volume, stands 2h under room temperature, filter, and takes solid, and after drying, grinding bletilla striata extract is obtained.
Embodiment 4
A kind of protective agent compositionss for speckle section shrimp liquid nitrogen deep quick-freezing, including cryoprotective agent and ice clothing agent.
The low temperature protectant solution includes sodium polyphosphate, different Vc sodium, sodium citrate, Sorbitol, bletilla striata extract
And water.The mass concentration of the sodium polyphosphate is 0.5%, and the mass concentration of different Vc sodium is 0.05%, and the quality of sodium citrate is dense
Spend for 0.2%, the mass concentration of Sorbitol is 5%, the mass concentration of bletilla striata extract is 1%.
Ice clothing agent includes trehalose, sodium alginate, bletilla striata extract, antibacterial peptide and frozen water.Institute in the ice clothing agent
It is 3% to state mass concentration of the trehalose in frozen water, and mass concentration of the sodium alginate in frozen water is 0.3%, the Pseudobulbus Bletillae (Rhizoma Bletillae)
Mass concentration of the extract in frozen water is 1%.Mass concentration of the antibacterial peptide in frozen water is 0.02%.
In the present embodiment, the preparation method of the bletilla striata extract is：Take Pseudobulbus Bletillae (Rhizoma Bletillae) powder and add it to the water of 3 times of quality
In, 95 DEG C are heated to, fried 60min is filtered；Take filtering residue repetition fried once, filter, merge filtrate twice, in filtrate
The dehydrated alcohol of addition same volume, stands 4h under room temperature, filter, and takes solid, and after drying, grinding bletilla striata extract is obtained.
Embodiment 5
A kind of method of speckle section shrimp liquid nitrogen deep quick-freezing fresh-keeping, comprises the following steps：
（1）Cleaning：The normal shrimp of fresh bright, abnormal smells from the patient is selected, is cleaned with water, water temperature is controlled at 10 DEG C；
（2）Dewatering：The speckle section shrimp for cleaning up is put in dewatering frame, dewatering 2min is stood；
（3）Immersion：Speckle section shrimp after dewatering is soaked into 6min in the low temperature protectant solution of embodiment 1.
（4）Quick-freezing：Speckle section shrimp after immersion is put and be neatly placed in the supporting sample tray of liquid nitrogen deep spray instant freezer,
In being put into liquid nitrogen deep quick freezing unit, fast frozen is carried out, adjustment multistage quick-freezing program is 2min to be reduced to from ambient temperature-
40 DEG C, rear 2min is reduced to -80 DEG C, is then incubated 16min and completes quick-freezing；
（5）Plating water glaze：8s in the ice clothing agent of the embodiment 1 that the speckle section shrimp after quick-freezing impregnated in 10 DEG C, then takes out dewatering
1min；
（6）Vacuum packaging：Speckle section shrimp after plating water glaze is vacuum-packed；
（7）Freezen protective：During speckle section shrimp after vacuum packaging is packaged in into carton or bubble chamber, in being stored in -30 DEG C of freezer.
Embodiment 6
A kind of method of speckle section shrimp liquid nitrogen deep quick-freezing fresh-keeping, comprises the following steps：
（1）Cleaning：The normal shrimp of fresh bright, abnormal smells from the patient is selected, is cleaned with water, water temperature is controlled at 5 DEG C；
（2）Dewatering：The speckle section shrimp for cleaning up is put in dewatering frame, dewatering 3min is stood；
（3）Immersion：Speckle section shrimp after dewatering is soaked into 4min in the low temperature protectant solution of embodiment 2.
（4）Quick-freezing：Speckle section shrimp after immersion is put and be neatly placed in the supporting sample tray of liquid nitrogen deep spray instant freezer,
In being put into liquid nitrogen deep quick freezing unit, fast frozen is carried out, adjustment multistage quick-freezing program is 1min to be reduced to from ambient temperature-
20 DEG C, rear 4min is reduced to -90 DEG C, is then incubated 12min and completes quick-freezing；
（5）Plating water glaze：10s in the ice clothing agent of the embodiment 2 that the speckle section shrimp after quick-freezing impregnated in 5 DEG C, then takes out dewatering
2min；（6）Vacuum packaging：Speckle section shrimp after plating water glaze is vacuum-packed；
（7）Freezen protective：During speckle section shrimp after vacuum packaging is packaged in into carton or bubble chamber, in being stored in -25 DEG C of freezer.
Embodiment 7
A kind of method of speckle section shrimp liquid nitrogen deep quick-freezing fresh-keeping, comprises the following steps：
（1）Cleaning：The normal shrimp of fresh bright, abnormal smells from the patient is selected, is cleaned with water, water temperature is controlled at 0 DEG C；
（2）Dewatering：The speckle section shrimp for cleaning up is put in dewatering frame, dewatering 4min is stood；
（3）Immersion：Speckle section shrimp after dewatering is soaked into 8min in the low temperature protectant solution of embodiment 3.
（4）Quick-freezing：Speckle section shrimp after immersion is put and be neatly placed in the supporting sample tray of liquid nitrogen deep spray instant freezer,
In being put into liquid nitrogen deep quick freezing unit, fast frozen is carried out, adjustment multistage quick-freezing program is 3min to be reduced to from ambient temperature-
25 DEG C, rear 3min is reduced to -60 DEG C, is then incubated 17min and completes quick-freezing；
（5）Plating water glaze：5s in the ice clothing agent of the embodiment 3 that the speckle section shrimp after quick-freezing impregnated in 0 DEG C, then takes out dewatering
3min。
（6）Vacuum packaging：Speckle section shrimp after plating water glaze is vacuum-packed；
（7）Freezen protective：During speckle section shrimp after vacuum packaging is packaged in into carton or bubble chamber, in being stored in -20 DEG C of freezer.
Embodiment 8
A kind of method of speckle section shrimp liquid nitrogen deep quick-freezing fresh-keeping, comprises the following steps：
（1）Cleaning：The normal shrimp of fresh bright, abnormal smells from the patient is selected, is cleaned with water, water temperature is controlled at 5 DEG C；
（2）Dewatering：The speckle section shrimp for cleaning up is put in dewatering frame, dewatering 3min is stood；
（3）Immersion：Speckle section shrimp after dewatering is soaked into 5min in the low temperature protectant solution of embodiment 4.
（4）Quick-freezing：Speckle section shrimp after immersion is put and be neatly placed in the supporting sample tray of liquid nitrogen deep spray instant freezer,
In being put into liquid nitrogen deep quick freezing unit, fast frozen is carried out, adjustment multistage quick-freezing program is 1min to be reduced to from ambient temperature-
20 DEG C, rear 4min is reduced to -90 DEG C, is then incubated 16min and completes quick-freezing；
（5）Plating water glaze：10s in the ice clothing agent of the embodiment 4 that the speckle section shrimp after quick-freezing impregnated in 5 DEG C, then takes out dewatering
2min。
（6）Vacuum packaging：Speckle section shrimp after plating water glaze is vacuum-packed；
（7）Freezen protective：During speckle section shrimp after vacuum packaging is packaged in into carton or bubble chamber, in being stored in -25 DEG C of freezer.
The speckle section shrimp that the different freezing methods of 2 kinds of period sampling measuring are processed（The liquid nitrogen flash freezer of embodiment 5 is common with -30 DEG C
Freezer freezes）Total volatile basic nitrogen（TVBN）Value.TVBN refers to animal food in the presence of enzyme and antibacterial, in decay process
In, breaks down proteins and produce the nitrogen substances such as ammonia and amine.The measure of TVBN is entered with reference to the method for GB/T 5009.44-2003
OK, as a result represented with mg/100g.
As a result show, the Penaeus monodon of liquid nitrogen flash freezer process optimizes conventional freezing method in freshness（- 30 DEG C of storehouses are frozen）（See figure
1）.At 2-4 month, the more conventional freezing mode of the speckle section shrimp handled by liquid nitrogen flash freezer process after sample quality more preferably, it is and fresh
Sample quality is close to.
Raw materials used in the present invention, equipment, unless otherwise noted, is the conventional raw material, equipment of this area；In the present invention
Method therefor, unless otherwise noted, is the conventional method of this area.
The above, is only presently preferred embodiments of the present invention, and not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent transformation that technical spirit is made to above example, still fall within the technology of the present invention side
The protection domain of case.
Claims (6)
1. a kind of protective agent compositionss for speckle section shrimp liquid nitrogen deep quick-freezing, it is characterised in that：Before for liquid nitrogen flash freezer
The cryoprotective agent of immersion speckle section shrimp and the ice clothing agent for soaking speckle section shrimp after liquid nitrogen flash freezer；
The low temperature protectant solution includes sodium polyphosphate, different Vc sodium, sodium citrate, Sorbitol, bletilla striata extract and water；
Ice clothing agent includes trehalose, sodium alginate, bletilla striata extract and frozen water.
2. the protective agent compositionss of speckle section shrimp liquid nitrogen deep quick-freezing are used for as claimed in claim 1, it is characterised in that described low
In temperature protection agent solution, the mass concentration of the sodium polyphosphate is 0.1%-0.5%, and the mass concentration of different Vc sodium is 0.05-
0.3%, the mass concentration of sodium citrate is 0.1-0.3%, and the mass concentration of Sorbitol is 1-5%, and the quality of bletilla striata extract is dense
Spend for 0.5-1.5%.
3. the protective agent compositionss of speckle section shrimp liquid nitrogen deep quick-freezing are used for as claimed in claim 1, it is characterised in that the ice
Mass concentration of the trehalose in frozen water described in clothing agent is 2-4%, and mass concentration of the sodium alginate in frozen water is 0.1-
0.5%, mass concentration of the bletilla striata extract in frozen water is 1-3%.
4. protective agent compositionss for speckle section shrimp liquid nitrogen deep quick-freezing as described in claim 1 or 2 or 3, it is characterised in that
The preparation method of the bletilla striata extract is：Take Pseudobulbus Bletillae (Rhizoma Bletillae) powder and add it in the water of 3-5 times of quality, be heated to 95-105
DEG C, fried 30-60min is filtered；Take filtering residue repetition fried once, filter, merge filtrate twice, in filtrate consubstantiality is added
4-6h is stood under long-pending dehydrated alcohol, room temperature, is filtered, take solid, after drying, grinding bletilla striata extract is obtained.
5. protective agent compositionss for speckle section shrimp liquid nitrogen deep quick-freezing as described in claim 1 or 3, it is characterised in that institute
State and also include in ice clothing agent antibacterial peptide.
6. the protective agent compositionss of speckle section shrimp liquid nitrogen deep quick-freezing are used for as claimed in claim 5, it is characterised in that described anti-
Mass concentration of the bacterium peptide in frozen water is 0.01-0.02%.
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| CN112715636A (en) * | 2020-12-29 | 2021-04-30 | 江苏优普保鲜技术有限公司 | Adhesion agent for crayfish tail ice coating and application method of adhesion agent in crayfish tail ice coating |
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| CN115606581A (en) * | 2022-10-11 | 2023-01-17 | 广州美健生物技术有限公司 | Stem cell cryopreservation solution and cryopreservation method |
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