CN102934685B - Modified atmosphere preservation method of marine brassica chinensis L. - Google Patents

Modified atmosphere preservation method of marine brassica chinensis L. Download PDF

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Publication number
CN102934685B
CN102934685B CN201210512830.3A CN201210512830A CN102934685B CN 102934685 B CN102934685 B CN 102934685B CN 201210512830 A CN201210512830 A CN 201210512830A CN 102934685 B CN102934685 B CN 102934685B
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qing gang
little rape
gas
protection package
freshness protection
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CN102934685A (en
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郭晓光
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TIANJIN CNRO SCIENCE TECHNOLOGY CO., LTD.
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TIANJIN CERO TECHNOLOGY DEVELOPMENT Co Ltd
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Abstract

The invention discloses a modified atmosphere preservation method of marine brassica chinensis L. The modified atmosphere preservation method comprises the following steps in sequence: 1) precooling; 2) preserving by adopting preservation pouches; 3) configuring gas parameter values in the preservation pouches: utilizing a high-precision gas distribution instrument to input gases O2, CO2 and N2 into the preservation pouches with brassica chinensis L., wherein the parameter values of the gases are as follows: the concentration of O2 is 2.5-12%, the concentration of CO2 is 8-15% and the rest gas is N2; 4) putting the preservation pouches in a cold store for storage; and 5) finishing the operation. The modified atmosphere preservation method has the following beneficial effects: through precooling, packaging with the preservation pouches, configuration of the gases O2, CO2 and N2 in the preservation pouches and control of the key processes such as temperature and humidity, the storage period of brassica chinensis L. is lengthened to 45 days; more than 98% of brassica chinensis L. does not suffer from quality deterioration such as vast water loss and wilting of leaf surfaces and even leaf rot and maintains good edibility; and the method is simple, is lower in cost, avoids chemical residues during storage and conforms to the international requirements.

Description

A kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel
Technical field
The present invention relates to a kind of preservation method to the little rape of the Qing Gang, particularly be a kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel.
Background technology
The little rape of the Qing Gang (Brassica chinensis L.), is again pakchoi, belongs to Cruciferae rape and belongs to Vegetable Crops of Brassica, annual herb.Originate in China, stem is upright, and branch is less, and color is dark green, contains the various nutrients such as protein, fat, glucide.It contains abundant calcium, iron and vitamin C, and carrotene is also very abundant, for resisting skin hyperkeratosis, has greatly spleen benefit.
The unsuitable Long-term Storage of the little rape of the Qing Gang, therefore to keeping fresh-keeping condition and the shelf life of the little rape better quality of the Qing Gang to require tighter.The little rape preservation and freshness of the prior art Zhong Dui Qing Gang adopts the processing method of cryopreservation, and the fresh-keeping concrete parameter of cryopreservation is: temperature is controlled at 0 ℃ ~ 4 ℃, relative humidity and is controlled at 92% ~ 95%; The storage period of the little rape of the Qing Gang only has 8 days ~ and 10 days; The problem occurring in preservation process is that blade face, the Qing Gang little rape upper strata dehydration is wilted, and lower floor rots on blade face etc.The little rape method for storing and refreshing of the above-mentioned prior art Zhong Dui Qing Gang can not meet the Storage Requirement in 30 days above time limits peculiar to vessel, directly affects numerous crewman's food supply demand.
Summary of the invention
The object of the invention is to overcome the defect of above-mentioned prior art, a kind of freshness date that can extend the little rape of the Qing Gang is provided, can keep again the little rapeseed quality of the Qing Gang good, realize the air regulating fresh-keeping method of the little rape of the Qing Gang a kind of peculiar to vessel of crewman's " meal meal has leaf vegetables " target.
The technical scheme solving the problems of the technologies described above is: a kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel, the described air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel carries out in accordance with the following steps successively: 1). precooling: be placed in rapidly 0 ℃ ~ 4 ℃, the freezer precooling of relative humidity 90% ~ 96% after the little rape of the Qing Gang is gathered 10 hours ~ 50 hours; 2). fresh-keeping with freshness protection package: the little rape of the Qing Gang after precooling is placed in the freshness protection package of long 30cm ~ 120cm, wide 20cm ~ 100cm, and each little rape amount of the fresh-keeping packed Qing Gang is 1kg ~ 20kg, and the little rape of the Bing Shi Qing Gang is in loose condition (of surface); 3). in freshness protection package, prepare gas parameter value: utilize high-accuracy gas mixing device to input O to being equipped with in the little rape freshness protection package of the Qing Gang 2, CO 2, N 2gas, its parameter value is respectively: O 2concentration is 2.5% ~ 12%, CO 2concentration is 8% ~ 15%, remaining gas is N 2; 4). enter Storage in cold bank: previous step is prepared to the little rape freshness protection package of the Qing Gang after gas and put into freezer and preserve, controlling temperature of ice house is 0 ℃ ~ 4 ℃, relative humidity 60% ~ 90%; 5). finish.
The invention has the beneficial effects as follows: the present invention overcomes the defect of prior art, and the present invention is by precooling; Freshness protection package packing; In freshness protection package, prepare O 2, CO 2, N 2gas; And in conjunction with the control to critical processes such as temperature, humidity, make the storage period of the little rape of the Qing Gang extend to 45 days by 1 day under normal temperature ~ 2 days, the more than 98% little rape of the Qing Gang does not occur that a large amount of dehydrations in the blade face blade of wilting even rots to wait quality deterioration phenomenon, keeps good edibility.The method operating procedure is simple, and cost is lower, in storage, without chemical residual, meets China's vegetables industryization development and internationalization requirement.
The specific embodiment
Below embodiments of the invention are described in detail.
The invention provides a kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel, the described air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel carries out in accordance with the following steps successively:
1). precooling: be placed in rapidly 0 ℃ ~ 4 ℃, the freezer precooling of relative humidity 90% ~ 96% after the little rape of the Qing Gang is gathered 10 hours ~ 50 hours;
2). fresh-keeping with freshness protection package: the little rape of the Qing Gang after precooling is placed in the freshness protection package of long 30cm ~ 120cm, wide 20cm ~ 100cm, and each little rape amount of the fresh-keeping packed Qing Gang is 1kg ~ 20kg, and the little rape of the Bing Shi Qing Gang is in loose condition (of surface);
3). in freshness protection package, prepare gas parameter value: utilize high-accuracy gas mixing device to input O to being equipped with in the little rape freshness protection package of the Qing Gang 2, CO 2, N 2gas, its parameter value is respectively: O 2concentration is 2.5% ~ 12%, CO 2concentration is 8% ~ 15%, remaining gas is N 2;
4). enter Storage in cold bank: previous step is prepared to the little rape freshness protection package of the Qing Gang after gas and put into freezer and preserve, controlling temperature of ice house is 0 ℃ ~ 4 ℃, relative humidity 60% ~ 90%;
5). finish.
Described high-accuracy gas mixing device is that the model of being produced by Tianjin CNRO Science Technology Development Co., Ltd research and development is CPY-3000/6, and sells on market, is mainly used in controlled atmosphere industry.This high-accuracy gas mixing device can regulate from control panel the distribution parameter of gas with various, meet the concentration requirement of oxygen, carbon dioxide and nitrogen in required mist, its distribution precision is high, reproducible, fast response time, reliable and stable, automaticity and the preserving fruit and vegetable utilizing effect that can effectively improve controlled atmosphere, also have good safety in utilization.
Embodiment 1:
The invention provides a kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel, the described air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel carries out in accordance with the following steps successively:
1). precooling: be placed in rapidly 0 ℃, the freezer precooling of relative humidity 90% after the little rape of the Qing Gang is gathered 10 hours;
2). fresh-keeping with freshness protection package: the little rape of the Qing Gang after precooling is placed in the freshness protection package of long 30cm, wide 20cm, and each little rape amount of the fresh-keeping packed Qing Gang is 1kg, and the little rape of the Bing Shi Qing Gang is in loose condition (of surface);
3). in freshness protection package, prepare gas parameter value: utilize high-accuracy gas mixing device to input O to being equipped with in the little rape freshness protection package of the Qing Gang 2, CO 2, N 2gas, its parameter value is respectively: O 2concentration is 2.5%, CO 2concentration is 8%, remaining gas is N 2;
4). enter Storage in cold bank: previous step is prepared to the little rape freshness protection package of the Qing Gang after gas and put into freezer and preserve, controlling temperature of ice house is 0 ℃, relative humidity 60%;
5). finish.
Embodiment 2:
The invention provides a kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel, the described air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel carries out in accordance with the following steps successively:
1). precooling: be placed in rapidly 4 ℃, the freezer precooling of relative humidity 96% after the little rape of the Qing Gang is gathered 50 hours;
2). fresh-keeping with freshness protection package: the little rape of the Qing Gang after precooling is placed in the freshness protection package of long 120cm, wide 100cm, and each little rape amount of the fresh-keeping packed Qing Gang is 20kg, and the little rape of the Bing Shi Qing Gang is in loose condition (of surface);
3). in freshness protection package, prepare gas parameter value: utilize high-accuracy gas mixing device to input O to being equipped with in the little rape freshness protection package of the Qing Gang 2, CO 2, N 2gas, its parameter value is respectively: O 2concentration is 12%, CO 2concentration is 15%, remaining gas is N 2;
4). enter Storage in cold bank: previous step is prepared to the little rape freshness protection package of the Qing Gang after gas and put into freezer and preserve, controlling temperature of ice house is 4 ℃, relative humidity 90%;
5). finish.
Embodiment 3:
The invention provides a kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel, the described air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel carries out in accordance with the following steps:
1). precooling: be placed in rapidly 2 ℃, the freezer precooling of relative humidity 93% after the little rape of the Qing Gang is gathered 30 hours;
2). fresh-keeping with freshness protection package: the little rape of the Qing Gang after precooling is placed in the freshness protection package of long 75cm, wide 60cm, and each little rape amount of the fresh-keeping packed Qing Gang is 9kg, and the little rape of the Bing Shi Qing Gang is in loose condition (of surface);
3). in freshness protection package, prepare gas parameter value: utilize high-accuracy gas mixing device to input O to being equipped with in the little rape freshness protection package of the Qing Gang 2, CO 2, N 2gas, its parameter value is respectively: O 2concentration is 7%, CO 2concentration is 12%, remaining gas is N 2;
4). enter Storage in cold bank: previous step is prepared to the little rape freshness protection package of the Qing Gang after gas and put into freezer and preserve, controlling temperature of ice house is 2 ℃, relative humidity 75%;
5). finish.
Evidence, air regulating fresh-keeping method has effectively prevented the wilting dehydration on the little rape of Qing Gang blade face and chlorophyll degradation loss, therefore controls dehydration and hypoxemia is one of mechanism of controlled atmosphere.
By the research of the Qing Gang's little rape controlled atmosphere effect and security is learnt: oxygen (O in the little rape freshness protection package of the Qing Gang 2) concentration can suppress its chlorophyllous degraded and prevent blade face yellow while being controlled at 2.5% ~ 12%; Keep 8% ~ 15% carbon dioxide (CO 2) concentration can reduce the little rape of the Qing Gang self respiratory rate, reduce the consumption of nutriment, thereby delay aging and the quality deterioration problem that energy loss causes; In freshness protection package, keep being more than or equal to 73% nitrogen (N 2) concentration can delay the oxidation of the little rape of the Qing Gang, avoid blade face brown stain even aging, thereby have the green preservation of good guarantor.In addition, along with the respiration of the little rape of the Qing Gang in storage self, CO 2concentration increases gradually, and the breeding that can hinder microorganism reaches the effect of fungus-proof antisepsis.
From controlled atmosphere test and application effect, in the distribution ratio of determining, carry out controlled atmosphere, the storage period of the little rape of the Qing Gang can reach 45 days, and the more than 98% little rape color of the Qing Gang is vivid does not all occur that gas injury phenomenon and the dehydration even blade face of wilting rots, and fresh-keeping effect is good.Therefore this evidence controlled atmosphere is safety and effective.
Described freshness protection package is selected polyethylene (PE) material and is had gas-premeable, to described O 2permeability be 3900mL/m 224h0.1MPa ~ 13000mL/m 224h0.1MPa *; To described CO 2gas-premeable is 7700mL/m 224h0.1MPa *; The thickness of polyethylene (PE) material freshness protection package is 25.4 μ m.
Described " O 2permeability be 3900mL/m 224h0.1MPa ~ 13000mL/m 224h0.1MPa " implication refer under the pressure of 0.1 MPa, the O of every freshness protection package through 24 hours every square metre of polyethylene materials 2transit dose be 3900 milliliters ~ 13000 milliliters.
Described " CO 2gas-premeable is 7700mL/m 224h0.1MPa " implication refer under the pressure of 0.1 MPa, the CO of every freshness protection package through 24 hours every square metre of polyethylene materials 2transit dose be 7700 milliliters.

Claims (3)

1. the air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel, is characterized in that, the described air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel carries out in accordance with the following steps successively:
1). precooling: be placed in rapidly 0 ℃~4 ℃, the freezer precooling of relative humidity 90%~96% after the little rape of the Qing Gang is gathered 10 hours~50 hours;
2). fresh-keeping with freshness protection package: the little rape of the Qing Gang after precooling is placed in the freshness protection package of long 30cm~120cm, wide 20cm~100cm, and each little rape amount of the fresh-keeping packed Qing Gang is 1kg~20kg, and the little rape of the Bing Shi Qing Gang is in loose condition (of surface);
3). in freshness protection package, prepare gas parameter value: utilize high-accuracy gas mixing device to input O2, CO2, N2 gas to being equipped with in the little rape freshness protection package of the Qing Gang, its parameter value is respectively: O2 concentration is 7%~12%, CO2 concentration is 12%~15%, remaining gas is N2;
4). enter Storage in cold bank: previous step is prepared to the little rape freshness protection package of the Qing Gang after gas and put into freezer and preserve, controlling temperature of ice house is 0 ℃~4 ℃, relative humidity 60%~90%;
5). finish.
2. according to a kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel described in claim 1, it is characterized in that, the described air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel carries out in accordance with the following steps:
1). precooling: be placed in rapidly 2 ℃, the freezer precooling of relative humidity 93% after the little rape of the Qing Gang is gathered 30 hours;
2). fresh-keeping with freshness protection package: the little rape of the Qing Gang after precooling is placed in the freshness protection package of long 75cm, wide 60cm, and each little rape amount of the fresh-keeping packed Qing Gang is 9kg, and the little rape of the Bing Shi Qing Gang is in loose condition (of surface);
3). in freshness protection package, prepare gas parameter value: utilize high-accuracy gas mixing device to input O to being equipped with in the little rape freshness protection package of the Qing Gang 2, CO 2, N 2gas, its parameter value is respectively: O 2concentration is 7%, CO 2concentration is 12%, remaining gas is N 2;
4). enter Storage in cold bank: previous step is prepared to the little rape freshness protection package of the Qing Gang after gas and put into freezer and preserve, controlling temperature of ice house is 2 ℃, relative humidity 75%;
5). finish.
3. according to a kind of air regulating fresh-keeping method to the little rape of the Qing Gang peculiar to vessel described in any one in claim 1 to 2, it is characterized in that, described freshness protection package is selected polyethylene (PE) material and is had gas-premeable, to the permeability of described O2, is 3900mL/m224h0.1MPa~13000mL/m224h0.1MPa*; To described CO2 gas-premeable, be 7700mL/m224h0.1MPa*; The thickness of polyethylene (PE) material freshness protection package is 25.4 μ m.
CN201210512830.3A 2012-12-04 2012-12-04 Modified atmosphere preservation method of marine brassica chinensis L. Active CN102934685B (en)

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CN107361129A (en) * 2017-08-29 2017-11-21 北京农学院 A kind of rape controlled atmospheric packing preservation method

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CN1357481A (en) * 2001-06-06 2002-07-10 梅龙 Dynamic air conditioning fruit and vegetable fresh-keeping packing bag
CN102144659A (en) * 2011-04-22 2011-08-10 南京农业大学 High carbon dioxide air-regulating package fresh-keeping method for fresh-cut lettuce
CN102165968A (en) * 2011-04-07 2011-08-31 中国人民解放军63698部队 Method for refreshing fruits and vegetables in ocean vessels
CN102793003A (en) * 2012-07-26 2012-11-28 苏州亚和保鲜科技有限公司 Modified atmosphere freshness-retaining method for vegetables

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Publication number Priority date Publication date Assignee Title
JPS4810219B1 (en) * 1970-12-29 1973-04-02
JPH0810219B2 (en) * 1990-05-31 1996-01-31 新日本製鐵株式会社 Steel material quality control method for steel production line

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US4142372A (en) * 1976-10-22 1979-03-06 Daikin Kogyo Co. Ltd. Controlled atmosphere storage method
CN1357481A (en) * 2001-06-06 2002-07-10 梅龙 Dynamic air conditioning fruit and vegetable fresh-keeping packing bag
CN102165968A (en) * 2011-04-07 2011-08-31 中国人民解放军63698部队 Method for refreshing fruits and vegetables in ocean vessels
CN102144659A (en) * 2011-04-22 2011-08-10 南京农业大学 High carbon dioxide air-regulating package fresh-keeping method for fresh-cut lettuce
CN102793003A (en) * 2012-07-26 2012-11-28 苏州亚和保鲜科技有限公司 Modified atmosphere freshness-retaining method for vegetables

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