CN107969474A - A kind of method for extending aquatic product cold storage freshness preservation using fungicide - Google Patents
A kind of method for extending aquatic product cold storage freshness preservation using fungicide Download PDFInfo
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- CN107969474A CN107969474A CN201710999991.2A CN201710999991A CN107969474A CN 107969474 A CN107969474 A CN 107969474A CN 201710999991 A CN201710999991 A CN 201710999991A CN 107969474 A CN107969474 A CN 107969474A
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- aquatic products
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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
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/06—Freezing; Subsequent thawing; Cooling
- A23B4/08—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals before or during cooling, e.g. in the form of an ice coating or frozen block
- A23B4/09—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals before or during cooling, e.g. in the form of an ice coating or frozen block with direct contact between the food and the chemical, e.g. liquid N2, at cryogenic temperature
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Abstract
The present invention relates to the method for preservation of fishery, more particularly to a kind of method that the preservation of fishery phase is extended using fungicide and improves fresh-keeping quality.Mainly solve that current iced storage method freshness date is short and salt hides method and can not ensure the technical bottleneck of freshness and quality.Implementation steps of the present invention are as follows：By aquatic products with after being embathed less than 10 DEG C of cold water, the ice water solution for being put into 0.5 ~ 5% polyhexamethylene guanide of percentage by weight carries out soaking sterilization, and then, aquatic products are inserted in foam safe, sterilization fresh-keeping ice is made by the aqueous solution freezing of 0.5 ~ 5% polyhexamethylene guanide in covering, finally carries out joint sealing.The present invention changes traditional antistaling process, i.e., in Preservation Treatment, first sterilizes, and sterilization protective film is formed on the top layer of aquatic products；In fresh-keeping period, suppressed growth of microorganism by sterilization fresh-keeping ice.So as to extend more than twice than traditional iced storage method freshness date.The present invention is suitable for ice preservation, live body dry method low-temperature transport and the frozen fish finishing of aquatic products.
Description
Technical field
It is more particularly to a kind of that aquatic product cold storage freshness preservation is extended using fungicide the present invention relates to the method for preservation of fishery
Method.
Background technology
The main reason for aquatic products are putrid and deteriorated be itself carry or storage in remaining microorganism, suitable
Growth, breeding, decompose the components such as fish body protein, amino acid and fat, aquatic products is had different smell and poison under the conditions of preferably
The goods and materials of property, lose original quality and value.At present, China's preservation of fishery uses refrigeration on the rocks mostly, addition salt and
The methods of additives such as preservative, with achieve the purpose that anti-corrosion, it is fresh-keeping, prolong storage period.Though ice refrigeration is fresh-keeping effectively to be suppressed,
Or slow down the activity and bacterial growth of fish body enzyme, original local flavor, nutritive value and the presentation quality of aquatic products are preferably preserved,
But fresh keeping time is not grown, especially in the case of remote aquatic products place of production ice cube is insufficient, cooling measure is preferable not to the utmost, past
Toward not transporting to before trade market, the distinctive freshness of aquatic products and color and luster have just lost, moreover, a variety of nutrition in aquatic products
Component and vitamin are largely destroyed.It is the most common preservation method of coastal fisherman that salt, which hides method, by destroying the micro- life of fish body
Thing and enzyme activity play a role required humidity, suppress the breeding of microorganism.But since the permeating and dewatering of salt solution is made
With, make fish body moisture reduction, inevitably change the original taste of aquatic products and quality, or even distinctive gloss.Separately
Outside, it is harmful that the aquatic products containing additives such as preservatives are eaten for a long time, it is easily carcinogenic when serious.China is the world
One aquatic products big producer, is the micro state of processing of aquatic products outlet.Aquatic products are often due to traditional preservation technology and processing
The backwardness of pattern, as a result causes the waste of fishery resources, it is more difficult to reaches the standard of outlet.Although China mainland 2004
To the Tilapia mossambica export volume in the U.S. up to 5.3 ten thousand tons, the 52.9% of imported from America Tilapia mossambica total amount is accounted for, but due to fresh-keeping and processing
Backward in technique, product quality is low, and price is substantially relatively low.By taking 2004 U.S.'s Tilapia mossambica fresh fish piece import prices as an example, China is big
Land price is 3.0 dollars/kilogram, and Taiwan is 4.24 dollars/kilogram.Research and development are adapted to the aquatic products of China's actual conditions to protect
Fresh technology can not only improve domestic preservation of fishery quality, but also can meet exported product commodity inspection requirement, expand aquatic products
Export volume and foreign exchange earnings, improve competitiveness in the international market, there is highly important realistic meaning.
The content of the invention
The purpose of the invention is to provide a kind of fresh-keeping efficient, fresh-keeping to have a wide range of application, food security, easy to operate
Practical, the features such as cost is low method for preserving aquatic products, to meet the requirement in domestic preservation of fishery market and export quarantine.It is main
Solving current preservation of fishery, existing ice refrigeration fresh keeping time is short in practice and salt hides method and can not ensure aquatic product quality
Technical problem.The technical scheme is that：A kind of method for being extended aquatic product cold storage freshness preservation using fungicide, aquatic products are existed
Before Preservation Treatment, first sterilized with fungicide, and sterilization protective film is formed in the body surface of aquatic products, in fresh-keeping period, pass through sterilization
Fresh-keeping ice suppresses microbial growth.The present invention implements to mainly include the following steps that：Aquatic products are embathed with cold water first, cold water temperature
Then aquatic products after embathing are put into the aqueous solution that percentage by weight is 0.5-5% polyhexamethylene guanides and carried out by≤10 DEG C of degree
Immersion 5~20 minutes, the temperature of the aqueous solution of polyhexamethylene guanide is 0~5 DEG C, is formed and killed in the body surface of aquatic products and gill portion
Bacterium protective film, the aquatic products with sterilization protective film are inserted in safe, fresh-keeping ice are covered on aquatic products, described is fresh-keeping
Ice is made of percentage by weight for the aqueous solution freezing of 0.5-5% polyhexamethylene guanides, and the dosage of the fresh-keeping ice is aquatic products
The 10%~60% of product weight, finally carries out joint sealing.
The invention has the advantages that polyhexamethylene guanide is a kind of environment-friendly type macromolecule polymer disinfection sanitizer, it is
Cationic polymer, its antibacterial action mainly pass through solubilizing lipids, change the permeability of bacterial cell membrane, make endobacillary generation
Thank and obstacle and antibacterial occurs.Compared with other disinfectants, polyhexamethylene guanide has obvious advantage, is mainly manifested in and kills
Bacterium wide spectrum, have low ability, the valid density of extremely strong killing bacterium, work fast, the property stable, soluble easily in water, corrosion-free
Property；It is colourless, tasteless, nontoxic, safe to use, it is a kind of environmental type disinfectant, without harmful substances such as iodine, chlorine, aldehyde.
The existing bacterium of keeping fresh aquatic products is killed by polyhexamethylene guanide, sterility protection film is formed around it.Use polyhexamethylene
Fresh-keeping ice made of guanidine can make antistaling container have the function of the fresh-keeping environments of sterilization, sterile and low temperature etc., so that, in antistaling container
Interior long period bacterium can not grow, and aquatic products are not perishable, extend fresh keeping time, thus can not be reached with other preservation methods
The effect arrived.The fresh-keeping method is suitable for aquatic products ice preservation, living aquatic product dry method low-temperature transport and freeze preservation, and tradition
Ice preservation method compare, freshness date can extend more than twice.The fresh-keeping method is a kind of advanced efficient, fresh-keeping application range
Extensively, food security, it is easy to operate practical, cost is low the features such as method.
Embodiment
Technical solution provided by the invention is fresh-keeping ice-cold by polyhexamethylene guanide frozen water cold soaking and polyhexamethylene guanide
Hide what two measures were realized.The present invention applicable various aquatic products ice preservations, living aquatic product dry method low-temperature transport or freezing
It is fresh-keeping.Aquatic products include fish, shrimps and crab class etc..Its technological process is as follows：It is sub- that aquatic products raw material → cold water embathes → poly- six
The fresh-keeping ice covering → joint sealing → storage of methylguanidine frozen water cold soaking → vanning → polyhexamethylene guanide or freezing.
Embodiment 1 uses fungicide to extend aquatic products ice preservation method (by taking hilsa herring as an example)：
Technology point explanation：
Hilsa herring cold water embathes：To ensure the fresh-keeping quality of hilsa herring, raw material must be embathed with less than 10 DEG C of cold water in time.To original
It is careful to accomplish during material processing, handles with care, forbids to beat fish body, rinses and want appropriateness, must not damage hilsa herring body surface
The mucous membrane in face, protects scale, microorganism and pollutant is cleaned, so as to lower the biological pollution degree of fresh-keeping period.
The cold soaking of frozen water containing fungicide：Hilsa herring after will be clean is weighed after record, is immediately placed in containing 1.0% (weight percent
Than) soak 10 minutes in the frozen water of polyhexamethylene guanide (0~5 DEG C), hilsa herring body surface and the original mushroom in gill portion are killed, and formed
Sterilize protective film.
Case on the rocks：Hilsa herring both hands are held out, are neatly arranged respectively by specification in wooden or plastics safe is cleaned,
Covering contains the 1% fresh-keeping ice of (percentage by weight) polyhexamethylene guanide on the hilsa herring put.Depending on amount on the rocks is with temperature condition,
The 40%~60% of aquatic products weight is generally with ice amount.The fresh-keeping ice of polyhexamethylene guanide constantly melts in fresh-keeping period, not only
Can cool down, due to containing fungicide in melt water, can make antistaling container that there are the fresh-keeping environments of sterilization and low temperature etc., compared with
Long-time bacterium can not grow, and aquatic products are not perishable, so that, extend fresh keeping time.The comparative test of preservation method shows, passes
The freshness date for ice preservation method of uniting is 4 days, and the hilsa herring freshness date of present invention sterilization ice preservation method is 9 days, and freshness date extends two
More than times.
Joint sealing preservation：Safe is sealed, then by the one big Nylon Bag of safe overcoat, and sack is folded flat and is sealed,
It is loaded into again in the big carton of outer packing, seals, brush shipping mark.
Embodiment 2 use fungicide kill frozen fish finishing microorganism (using processing freezing Tilapia Fillet as
Example)：
Technology point explanation：
The processing of raw material fish：Raw material fish must be embathed, clearly with less than 10 DEG C of cold water in time after decaptitating and removing internal organ processing
Wash the impurity of raw material fish body table and bloodstain remaining in vivo.
Frozen water cold soaking containing fungicide：Tilapia mossambica after cleaning is immediately placed in sub- containing 2.0% (percentage by weight) poly- six
Soaked 5 minutes in the frozen water of methylguanidine (0~5 DEG C), kill the microorganism of remaining, and form sterilization protective film.
Peeling and section：After the Tilapia mossambica peeling after sterilization, with machine or manually cut into slices.
Shaping and find fault：By the fillet cut, frozen water containing fungicide rinses more than, and remaining is cut by shaping
Fin, fish-skin and internal organ etc. influence the redundance of appearance, choose spur.
Frozen water rinsing containing fungicide：Fillet after finishing are immediately placed in containing poly- six methylene of 2.0% (percentage by weight)
After being rinsed 3 seconds in the frozen water of base guanidine (0~5 DEG C), abundant draining is carried out, frozen beads occurs to prevent frozen fish fillet.
Packaging and plate freezing：After fillet are weighed, customer requirement is pressed in freezing basket by fillet flat pendulum.It should be stood after balance
Quick-freezing room is sent into, it is quick-frozen using tablet, when the quick-frozen time is 2 small.
Placing is cased and refrigeration：After quick-frozen, frozen fillet basket is put into refrigeration package case, is then placed in refrigerating chamber, refrigerated
Temperature is -23 DEG C.
Embodiment 3 uses fungicide to improve living aquatic product dry method conevying efficiency (by taking lobster as an example)：Technology point explanation：
Lobster cold water embathes：To ensure lobster transportation survival rate, lobster living must be washed by gradually cooling to 10 DEG C of Mare Frigoris water logging, be rushed
Wash and want appropriateness, generally completed in 10 minutes.Cooling can not be too fast, in order to avoid lobster is produced stress reaction.In whole flush period
Between must accomplish careful, handle with care, forbid to beat and frighten lobster, dissolved oxygen is not less than 5mg/l.By cleaning microorganism
And pollutant, lower the biological pollution degree during transport.
The cold soaking of frozen water containing fungicide：Lobster after cleaning is pulled out, after record of weighing, is immediately placed in containing 1% (weight percent
Than) soak 10 minutes in the cold water of polyhexamethylene guanide (5~10 DEG C).The original mushroom of lobster body surface is killed, and forms sterilization
Protective film.Cold dissolved oxygen in water can not be less than 5mg/l.
Case on the rocks：Lobster is pulled out, is neatly arranged respectively in foam safe by specification, is contained in the superiors' covering
The 1% fresh-keeping ice of (percentage by weight) polyhexamethylene guanide.Depending on amount on the rocks is with temperature condition and haulage time, it is generally with ice amount
The 10~30% of aquatic products weight.The fresh-keeping ice of polyhexamethylene guanide constantly melts in fresh-keeping period, can not only cool down, due to melting
Contain fungicide in water, can make antistaling container that there are the fresh-keeping environments of sterilization and low temperature etc., can not in long period bacterium
To grow, biological pollution degree reduces, so that, extend haulage time and survival rate.With the comparative test of traditional lobster transportation resources
Show, through 48 it is small when dry method transport, the lobster survival rate of Traditional Transportation method is 84%, the lobster of present invention sterilization iced storage conveying method
Survival rate is 96%, and difference is very notable.
Joint sealing preservation：Safe is sealed, then by the one big Nylon Bag of safe overcoat, and sack is folded flat and is sealed,
It is loaded into again in the big carton of outer packing, seals, brush shipping mark.
Embodiment 4, the live transport of crab.The concentration expressed in percentage by weight of fungicide polyhexamethylene guanide solution and fresh-keeping ice is
3%, remaining is same as Example 3.
Claims (3)
1. a kind of method for being extended aquatic product cold storage freshness preservation using fungicide, is comprised the following steps：First by aquatic products cold water
Embathe, cold water temperature≤10 DEG C, the aquatic products after embathing then are put into 0.5~5% polyhexamethylene guanide of percentage by weight
Ice water solution carries out soaking sterilization, and the aquatic products after sterilization processing are inserted in foam safe, on aquatic products covering sterilization protect
Fresh ice, the sterilization fresh-keeping ice is made of the aqueous solution freezing of 0.5~5% polyhexamethylene guanide of percentage by weight, most laggard
Row joint sealing.
2. a kind of method for extending aquatic product cold storage freshness preservation using fungicide according to claim 1, it is characterized in that, in institute
Cold soaking 5~20 minutes in the polyhexamethylene guanide ice water solution stated, solution temperature are 0~10 DEG C.
3. a kind of method for extending aquatic product cold storage freshness preservation using fungicide according to claim 1, it is characterized in that, poly- six
The dosage of the fresh-keeping ice of methylene guanidine is the 10%~60% of aquatic products weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710999991.2A CN107969474A (en) | 2017-10-24 | 2017-10-24 | A kind of method for extending aquatic product cold storage freshness preservation using fungicide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710999991.2A CN107969474A (en) | 2017-10-24 | 2017-10-24 | A kind of method for extending aquatic product cold storage freshness preservation using fungicide |
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| Publication Number | Publication Date |
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| CN107969474A true CN107969474A (en) | 2018-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710999991.2A Pending CN107969474A (en) | 2017-10-24 | 2017-10-24 | A kind of method for extending aquatic product cold storage freshness preservation using fungicide |
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| CN (1) | CN107969474A (en) |
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- 2017-10-24 CN CN201710999991.2A patent/CN107969474A/en active Pending
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Application publication date: 20180501 |