CN107334031A - A kind of method of plasma-activated ice keeping fresh aquatic products - Google Patents
A kind of method of plasma-activated ice keeping fresh aquatic products Download PDFInfo
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- CN107334031A CN107334031A CN201610282255.0A CN201610282255A CN107334031A CN 107334031 A CN107334031 A CN 107334031A CN 201610282255 A CN201610282255 A CN 201610282255A CN 107334031 A CN107334031 A CN 107334031A
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- plasma
- ice
- aquatic products
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Classifications
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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
-
- 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
Abstract
The present invention provides a kind of method of plasma-activated ice keeping fresh aquatic products.Wherein plasma-activated ice is by after the atmos low-temperature plasma processing aqueous solution 10 40 minutes, the solution after processing is passed through into what is obtained in ice machine immediately.Then fresh aquatic products are positioned over the plasma-activated ice prepared in the form of being laminated fresh-keeping in incubator.Using plasma of the present invention activation ice carries out cold storing and fresh-keeping processing to aquatic products, can effectively kill the microorganism on surface, largely reduces putrid and deteriorated, and can significantly extend the aquatic products shelf-life under refrigerated conditions, improve aquatic products quality.This method technique is simple, it is easy to operate, cost is cheap, safe and nontoxic property residual, meet the trend of pollution-free food, there is great market application potential.
Description
Technical field
The present invention relates to food preservative technology field, and in particular to a kind of method of using plasma activation ice keeping fresh aquatic products.
Background technology
Aquaculture nutritional value is high, rich in protein, unrighted acid and various trace elements etc..Unsaturated lipid contained by it
Fat acid has reduction cholesterol and other effects.During preservation is transported, the survival rate and quality of aquatic products suffer from very big decline,
Microbial growth, putrid and deteriorated, harmful microorganism cross-infection, the practical safety of consumer is had a strong impact on, while cause food to provide
Source wastes.And with the improvement of people's living standards, consumer is for the quality of living aquatic product and the demand of food security
Constantly raising.
At present, traditional cold-storage and fresh-keeping method mainly has ultraviolet sterilization, ozone processing, radiation sterilizing and uses chemical preservative molten
Liquid.UV radiation technology for sterilization is generally surface disinfection, is limited in scope and in the presence of sterilization dead angle；Ozonizer not only use cost
Height, cause food processing producer to reduce cost, reduce and use；And due to its Strong oxdiative feature, even the ozone of low concentration
Also eyes and respiratory system can be damaged, extreme influence is caused to the health of job-shop operation worker, can also be caused
The oxidative decoloration of sample；The dosage of radiation sterilizing killing microorganisms is higher for operating personnel, and security is low；Processing enterprise master
To use chemical preservative fresh-keeping, such as add malachite green, chloramphenicol, sodium hypochlorite forbidden drugses and poisonous and harmful substance and enter
Row immersion, but often cause food and medicine residual exceeded, the indexs such as crude protein, crude fat content are influenceed, reduce quality, and
The smell residual of chemicals itself also has an impact to mouthfeel and consumer spending psychology.
Atmos low-temperature plasma activated water is a kind of low pH for handling to obtain through atmos low-temperature plasma device by the aqueous solution
Value, the activated water of high redox potential.A series of plasma chemistry changes and reaction can occur in activation for activated water, living
Contain hydrogen peroxide, superoxide anion, hydroxyl free radical, NO free radical isoreactivity particles, these active particles in water after change
The microorganisms such as various bacteria, fungi, virus can efficiently be killed.Because the life-span of these free radicals is all shorter, in certain time
It is interior to disappear, thus the sterilization of plasma-activated water on environment without influence, effectively prevent the caused residual problem of medicine after conventional sterilization,
Improve aquatic products quality, it is ensured that food security.
The content of the invention
The purpose of the present invention is short for the existing storage period for aquatic products storage technique, and easily corruption, quality are difficult to
Ensure, the problems such as causing food waste.
Traditional cold-storage and fresh-keeping method mainly has ultraviolet sterilization, ozone processing, radiation sterilizing and uses fresh chemically agent solution.It is purple
Outside line sterilization technology is generally surface disinfection, is limited in scope and in the presence of sterilization dead angle；Not only use cost is high for ozonizer, causes
Make food processing producer to reduce cost, reduce and use；And due to its Strong oxdiative feature, even the ozone of low concentration also can be right
Eyes and respiratory system damage, and cause extreme influence to the health of job-shop operation worker, can also cause sample
Oxidative decoloration；The dosage of radiation sterilizing killing microorganisms is higher for operating personnel, and security is low；Processing enterprise mainly uses
Chemical preservative is fresh-keeping, such as adds malachite green, chloramphenicol, sodium hypochlorite forbidden drugses and poisonous and harmful substance and is soaked,
But often cause food and medicine residual exceeded, influence the indexs such as crude protein, crude fat content, reduce quality, and chemicals
Also mouthfeel and consumer spending psychology have an impact the smell residual of itself.
The present invention provide it is a kind of using plasma-activated ice come the method for keeping fresh aquatic products, can keep stablizing suitable low temperature ring
Border, suppress biochemical reaction rate；And can suppresses the growth of microorganism, avoids going bad now because of caused by the growth and breeding of microorganism
As so as to reach the effect for extending aquatic products storage period, improving aquatic products quality.Whole preparation technology is to pass through plasma simultaneously
Body excites the aqueous solution, is prepared into trash ice again afterwards, so cost is cheap, it is simple to operate.Due to playing the activity of decisive role
Oxygen and active nitrogen life-span are all shorter, can disappear within a certain period of time, therefore bactericidal effect is good, has no side effect, environment-friendly.Deng
Gas ions activation ice is the preservation method that can be applied to aquatic products long-term storage on a large scale.
In order to realize above technique effect, the present invention is to be achieved by the steps of：
A kind of plasma-activated ice is obtained by atmos low-temperature plasma activated water by low-temperature treatment.
In the above method, described atmos low-temperature plasma activated water is obtained by following manner：Source of the gas is opened to air
Force down and working gas is passed through in isothermal plasma, atmos low-temperature plasma generator is stretched into below aqueous solution liquid level, adjust
Gas flow rate, opens high voltage power supply after steady air current, and discharge process obtains after 10-40 minutes.
In the above method, described low-temperature treatment, the described atmos low-temperature plasma aqueous solution, which is positioned in ice machine, to be prepared
Ice is activated as gas ions.
Preferably, the one kind of the working gas of described atmos low-temperature plasma generator in argon gas, nitrogen, air
Or helium/argon gas and two kinds of gases of oxygen are with the mixed gas of arbitrary proportion.
Preferably, the working gas flow velocity of described atmos low-temperature plasma generator is 2-5L/h.
Preferably, the electron density of described atmos low-temperature plasma generator is more than 1016/cm3。
Preferably, the described aqueous solution is selected from：One kind in running water, pure water, ultra-pure water, deionized water, distilled water.
A kind of method of keeping fresh aquatic products, extend the shelf-life of aquatic products using plasma-activated ice.
In above-mentioned method, the methods of described keeping fresh aquatic products is fresh aquatic products with the plasma-activated ice for preparing with overlapping
Form be positioned in incubator carry out it is fresh-keeping, wherein the thickness of every layer of plasma-activated ice is 3-5cm, aquatic products with wait from
The mass ratio of daughter activation ice is 1：2-1：5.The incubator of aquatic products and plasma-activated ice is low under the conditions of being put into 0 DEG C -5 DEG C
Temperature storage, once plasma-activated ice was changed per 1-3 days.
In above-mentioned method, described aquatic products include fish, shrimps, shellfish etc..
The beneficial effects of the invention are as follows：Atmos low-temperature plasma activates ice because itself low temperature, pH are less than 4 and rich in work
Property oxygen and active nitrogen free radical, effectively slow down the growth of aquatic products surface exogenous microbial, extend to the fresh-keeping of aquatic products
Time, and the organoleptic effects such as color and luster, smell, muscle to aquatic products are smaller；Aquatic products are placed in into plasma activation to protect on ice
It is fresh, it is readily transported and stores.Whole preparation technology is by the plasma exciatiaon aqueous solution simultaneously, is prepared into trash ice again afterwards,
So cost is cheap, it is simple to operate.Because the active oxygen and active nitrogen life-span that play decisive role are all shorter, in certain time
It is interior to disappear, therefore bactericidal effect is good, has no side effect, environment-friendly, security height etc. small to human health damage.
Brief description of the drawings
Fig. 1 is the process of the fresh-keeping salmon fillet of plasma ice
Fig. 2 is the changing trend diagram of total plate count after plasma-activated ice and the fresh-keeping salmon piece of common ice.
Fig. 3 is the changing trend diagram of plasma-activated ice and VBN (TVBN) after the fresh-keeping salmon piece of common ice.
Fig. 4 is plasma-activated ice and the changing trend diagram of aberration brightness (L*) after the fresh-keeping salmon piece of common ice.
Embodiment
With reference to embodiment, the invention will be further described.
Laboratory apparatus：Make atmos low-temperature plasma device, Biohazard Safety Equipment (company of Haier), BagMixer400VW types by oneself
Patting type homogenizer (French interscience companies), the vortex oscillators of Vortex-Genie 2 (U.S.), water isolation type are permanent
Warm incubator.
Embodiment 1：Present embodiment is used for the shelf life for extending the fresh-keeping salmon piece of trash ice, follows the steps below, such as Fig. 1
It is shown：
(1) salmon piece is bought：Salmon purchase from the market of farm produce, choose bright eyes, bright in color, fish scale come off it is less,
The harder fresh individual of free from extraneous odour, meat, laboratory treatment is transported back in 20 minutes under the conditions of iced storage.
(2) preparation of atmos low-temperature plasma activated water：500ml is placed in using self-control atmos low-temperature plasma generator
In deionized water, working gas air is passed through plasma generator, the place of atmos low-temperature plasma with 3L/h flow velocity
Reason power is 30W, and processing time is 30 minutes, and repeatedly the obtained plasma-activated common 3L of water, is positioned in ice machine and is made
The trash ice of plasma-activated water, and plasma-activated ice now-making-now-using.
(3) common ice prepares：Identical 3L deionized waters are placed directly within ice machine and prepare trash ice, and same now-making-now-using.
(4) pretreatment of salmon piece：After salmon reaches laboratory, internal organ are removed in decaptitating, are eluted with water, will clean three
Literary fish is cut into the fillet that width is 5cm in safety cabinet with sterile blade, is randomly divided into 2 groups.
(5) experiment process：The two groups of salmon pieces obtained by above-mentioned pretreatment, one group of using plasma activation ice storage are (real
Test group), another group using common ice storage (control group).6 each indexs of salmon pieces detection of sampling daily, 5 days by a definite date.
Plasma-activated ice or common ice and the mode of action of salmon piece are put into the bubble chamber of cleaning for layer fillet layer ice, wherein
Bottom ice thickness is 5cm, and the ice layer thickness for being covered in salmon surface is 5cm, and is 3 layers during packaging, is avoided because of number of plies mistake
Salmon is damaged by pressure more, influences aesthetic quality.The mass ratio of salmon and ice is 1：3, the salmon piece adhesive tape that will be placed
Airtight package bubble chamber, stored under the conditions of bubble chamber then is put into 3 DEG C and change an ice in every two days；6 three texts of sampling daily
Fillet detect total plate count (APC), VBN (TVBN) and the aberration brightness L* of salmon, and indices are surveyed
Method is determined all referring to national standard, 5 days by a definite date.
The total plate count (APC) (as shown in Figure 2) of the salmon of plasma-activated ice treatment group, VBN (TVBN)
(as shown in Figure 3) is substantially less than the control group (P of common ice<0.05), aberration brightness L* values are (as shown in Figure 4) aobvious
Work is higher than control group (P<0.05), illustrate that plasma-activated ice can effectively suppress the breeding of microorganism, significantly slow volatilization
The generation of property alkali nitrogen, the decline of aberration brightness L* values.Comprehensive total plate count, VBN, the finger of aberration brightness L* values
Mark, compared to common ice, plasma-activated ice effectively extends the storage period of salmon piece.
Embodiment 2：Present embodiment is used for the shelf life for extending the fresh-keeping Penaeus Vannmei of trash ice, follows the steps below：
(1) Penaeus Vannmei is bought：Penaeus Vannmei purchase chooses fresh individual from the market of farm produce, 20 points under the conditions of iced storage
Transport laboratory treatment in clock back, be divided into two groups after sample shrimp is rinsed 2-3 times with running water.
(2) preparation of atmos low-temperature plasma activated water：500ml is placed in using self-control atmos low-temperature plasma generator
In running water, working gas nitrogen is passed through plasma generator, the processing of atmos low-temperature plasma with 3L/h flow velocity
Power is 30W, and processing time is 30 minutes, repeatedly the obtained plasma-activated common 3L of water, is positioned in ice machine obtained etc.
The trash ice of gas ions activated water, and plasma-activated ice now-making-now-using.
(3) common ice prepares：Identical 3L deionized waters are placed directly within ice machine and prepare trash ice, and same now-making-now-using.
(4) experiment process：One group of using plasma activation ice storage (experimental group), another group (right using common ice storage
According to group).Plasma-activated ice or common ice and the mode of action of Penaeus Vannmei are put into the incubator of cleaning in a manner of being laminated
In, wherein bottom ice thickness is 5cm, and is 3 layers during packaging, avoids, because the number of plies excessively damages shrimp by pressure, influenceing aesthetic quality.
By the shrimp placed with atmos low-temperature plasma ice is closed is put into incubator, storage and every two days under the conditions of being then placed in 3 DEG C
Change an ice；9 shrimp detection total plate counts (APC) of sampling daily, VBN (TVBN) and aberration brightness L*,
Indices assay method is all referring to national standard, 5 days by a definite date.
Claims (10)
- A kind of 1. plasma-activated ice, it is characterised in that：Described plasma-activated ice is activated by atmos low-temperature plasma What water obtained by low-temperature treatment.
- 2. atmos low-temperature plasma activated water as described in claim 1, it is characterised in that：Described atmos low-temperature etc. from Daughter activated water is obtained by following manner：Open source of the gas and working gas is passed through into atmos low-temperature plasma, by air Pressure low-temperature plasma generator is stretched into below aqueous solution liquid level, adjusts gas flow rate, high voltage power supply is opened after steady air current, Discharge process obtains after 10-40 minutes.
- 3. low-temperature treatment as claimed in claim 1, it is characterised in that：The described atmos low-temperature plasma aqueous solution is positioned over system Being prepared in ice maker turns into gas ions activation ice.
- 4. atmos low-temperature plasma as described in claim 2, it is characterised in that：It is passed through atmos low-temperature plasma The one kind or helium/argon gas of the working gas of device in argon gas, nitrogen, air are with two kinds of gases of oxygen with the mixing of arbitrary proportion Gas.
- 5. atmos low-temperature plasma as described in claim 2, it is characterised in that：It is passed through atmos low-temperature plasma Working gas flow velocity is 2-5L/h in device.
- 6. atmos low-temperature plasma as described in claim 2, it is characterised in that：Described atmos low-temperature plasma hair The electron density of raw device is more than 1016/cm3。
- 7. the aqueous solution as described in claim 2, it is characterised in that：The used aqueous solution is selected from：Running water, pure water, surpass One kind in pure water, deionized water, distilled water.
- A kind of 8. method of keeping fresh aquatic products, it is characterised in that extend the shelf-life of aquatic products using plasma-activated ice.
- 9. the method for keeping fresh aquatic products as described in claim 8, it is characterised in that：Fresh aquatic products are lived with the plasma prepared Change ice be positioned in the form of overlapping in incubator carry out it is fresh-keeping, wherein the thickness of every layer of plasma-activated ice is 3-5cm, water The mass ratio of product and plasma-activated ice is 1：2-1：5.The incubator of aquatic products and plasma-activated ice is put into 0 DEG C -5 DEG C Under the conditions of cryopreservation, once plasma-activated ice was changed per 1-3 days.
- 10. aquatic products as described in claim 8, it is characterised in that：The aquatic products include fish, shrimps, shellfish etc..
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467859A (en) * | 2018-02-26 | 2018-08-31 | 浙江海洋大学 | A method of quenching surimi product endogenous proteinase using low temperature plasma |
| CN108617927A (en) * | 2018-02-26 | 2018-10-09 | 浙江海洋大学 | A method of controlling minced fish gel property using low temperature plasma |
| CN109757552A (en) * | 2019-03-15 | 2019-05-17 | 南京农业大学 | A kind of plasma-activated lactate buffer solution and its preparation method and application with Efficient antibacterial performance |
| CN110692699A (en) * | 2019-08-28 | 2020-01-17 | 浙江工业大学 | Freezing and ice crystal nondestructive sensing method and device for ship-borne high-activation water treatment marine products |
| CN110720504A (en) * | 2019-10-09 | 2020-01-24 | 浙江海洋大学 | Method for delaying deterioration of texture quality of shrimps in storage process |
| CN111296557A (en) * | 2020-03-23 | 2020-06-19 | 中国检验检疫科学研究院 | Plasma-based plant product postharvest insecticidal and bacteriostatic treatment method |
| CN112125374A (en) * | 2020-09-14 | 2020-12-25 | 西安交通大学 | Method and device for preserving plasma activated water and method for preparing finished product |
| CN113511706A (en) * | 2021-05-10 | 2021-10-19 | 北京农学院 | Device and method for preparing activated ice by air plasma |
| CN113826842A (en) * | 2021-08-24 | 2021-12-24 | 浙江海洋大学 | Preparation and fresh-keeping method of instant drunk shrimp can |
| CN114557381A (en) * | 2022-03-11 | 2022-05-31 | 浙江工业大学 | Quick-freezing preservation method for large yellow croaker |
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| CN102423100A (en) * | 2011-11-09 | 2012-04-25 | 上海海洋大学 | Penaeus Vannamei ice temperature fresh keeping method combining with ice cube refrigeration |
| CN105166030A (en) * | 2015-08-07 | 2015-12-23 | 北京大学 | Method for keeping fruits fresh through atmospheric pressure low temperature plasma activated water |
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| CN102423100A (en) * | 2011-11-09 | 2012-04-25 | 上海海洋大学 | Penaeus Vannamei ice temperature fresh keeping method combining with ice cube refrigeration |
| CN105166030A (en) * | 2015-08-07 | 2015-12-23 | 北京大学 | Method for keeping fruits fresh through atmospheric pressure low temperature plasma activated water |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108467859A (en) * | 2018-02-26 | 2018-08-31 | 浙江海洋大学 | A method of quenching surimi product endogenous proteinase using low temperature plasma |
| CN108617927A (en) * | 2018-02-26 | 2018-10-09 | 浙江海洋大学 | A method of controlling minced fish gel property using low temperature plasma |
| CN109757552A (en) * | 2019-03-15 | 2019-05-17 | 南京农业大学 | A kind of plasma-activated lactate buffer solution and its preparation method and application with Efficient antibacterial performance |
| CN109757552B (en) * | 2019-03-15 | 2022-01-04 | 南京农业大学 | Plasma activated lactic acid solution with efficient antibacterial performance and preparation method and application thereof |
| CN110692699A (en) * | 2019-08-28 | 2020-01-17 | 浙江工业大学 | Freezing and ice crystal nondestructive sensing method and device for ship-borne high-activation water treatment marine products |
| CN110720504A (en) * | 2019-10-09 | 2020-01-24 | 浙江海洋大学 | Method for delaying deterioration of texture quality of shrimps in storage process |
| CN111296557A (en) * | 2020-03-23 | 2020-06-19 | 中国检验检疫科学研究院 | Plasma-based plant product postharvest insecticidal and bacteriostatic treatment method |
| CN112125374A (en) * | 2020-09-14 | 2020-12-25 | 西安交通大学 | Method and device for preserving plasma activated water and method for preparing finished product |
| CN113511706A (en) * | 2021-05-10 | 2021-10-19 | 北京农学院 | Device and method for preparing activated ice by air plasma |
| CN113826842A (en) * | 2021-08-24 | 2021-12-24 | 浙江海洋大学 | Preparation and fresh-keeping method of instant drunk shrimp can |
| CN114557381A (en) * | 2022-03-11 | 2022-05-31 | 浙江工业大学 | Quick-freezing preservation method for large yellow croaker |
| CN114557381B (en) * | 2022-03-11 | 2024-03-15 | 浙江工业大学 | Quick-freezing fresh-keeping method for large yellow croaker |
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