CN103004969A - Modified atmosphere preservation method of spinach - Google Patents
Modified atmosphere preservation method of spinach Download PDFInfo
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- CN103004969A CN103004969A CN 201210496955 CN201210496955A CN103004969A CN 103004969 A CN103004969 A CN 103004969A CN 201210496955 CN201210496955 CN 201210496955 CN 201210496955 A CN201210496955 A CN 201210496955A CN 103004969 A CN103004969 A CN 103004969A
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Abstract
The invention discloses a modified atmosphere preservation method of spinach. The modified atmosphere preservation method comprises the following steps: (1) the spinach to be preserved is picked and selected; (2) the picked and selected spinach is precooled; (3) the precooled spinach is sterilized; (4) the sterilized spinach is put in a packaging container and the mixed gas of oxygen, carbon dioxide and nitrogen is introduced into the packaging container until the concentration of nitrogen, oxygen and carbon dioxide is 85-95%, 1-8% and 1-6% respectively; (5) after modified atmosphere packaging, the spinach is refrigerated in a cold storage. According to the preservation method disclosed by the invention can, in-vivo breath of the spinach can be restrained, body water of the spinach can be kept and the shelf life of the spinach is prolonged.
Description
Technical field
The invention belongs to the food preservative technology field, relate to the air regulating fresh-keeping method of a kind of spinach.
Background technology
The spinach rear harmful microbes such as bacterium, mould that easily are subject to of gathering infect, and cause rotting in the postharvest storage transportation.Therefore, the infecting and breed of the sex pheromone in establishment spinach surface and the storage environment is maintenance spinach fresh quality, the prolongation important technical of storage period.
In the prior art, be used for spinach class preservation technique and substantially be divided into three kinds of methods:
1, adopting the preservation by low temperature technology, is exactly that spinach is preserved at a certain temperature (0 ~ 5 ℃), carries out fresh-keeping to spinach.
2, low temperature and high relative humidity preservation technique is exactly that spinach is preserved at a certain temperature (0 ~ 5 ℃), and ambient humidity is also higher simultaneously, carries out fresh-keeping to spinach.
3, storing indoor certain inert gas and the preservation by low temperature of being filled with of spinach.
Adopting above-mentioned the first preservation technique is preservation by low temperature, and the major defect of existence is: after storing certain hour, fresh-keeping object is because of the atrophy of drying out, shrivelled, and mouthfeel descends greatly.
Adopting above-mentioned the second preservation technique is that low temperature and high relative humidity is fresh-keeping, and the major defect of existence is: can guarantee to a certain extent that the spinach dehydration is slow if this kind method is refreshing, cause the harm of going mouldy because indoor humidity is excessive but strengthened again spinach.
Adopt above-mentioned the third preservation technique namely to be filled with inert gas, the major defect of existence is: a, the indoor inert gas concentration equilibrium of difficult assurance are unanimously; B, because of the staff pass in and out indoor or gas exchange to cause gas outwards to run off serious, fresh-keeping effect descends; C, indoor be full of inert gas after, the indoor oxygen that lacks, inert gas itself can damage the person, make staff's personal safety can not get ensureing, and personnel's turnover difficulty comparatively.Simultaneously, the large usage quantity of inert gas has increased fresh-keeping cost.
Summary of the invention
The object of the invention is to overcome defective of the prior art, and the air regulating fresh-keeping method of a kind of spinach is provided, and this preservation method can suppress the internal respiration of spinach body, keeps moisture in the spinach body, and its freshness date is prolonged.
For achieving the above object, the technical solution used in the present invention is: the air regulating fresh-keeping method of a kind of spinach, described air regulating fresh-keeping method comprises the steps:
1) to the fresh-keeping spinach of need pluck, sorting;
2) spinach after harvesting, the sorting is carried out the precooling operation;
3) spinach after the precooling is carried out sterilization treatment;
4) spinach after will sterilizing places in the packing container, and passes into the mist of oxygen, carbon dioxide and nitrogen in the described packing container, is that the concentration of 1-8%, carbon dioxide is 1-6% so that the concentration of packing container nitrogen is the concentration of 85-95%, oxygen;
5) spinach that controlled atmospheric packing is good is inserted in the freezer and refrigerates.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described spinach is selected plucking of medium well degree.
2, in the such scheme, described sorting refers to remove the spinach that corrupt or appearance damages.
3, in the such scheme, the temperature of pre-freezer is 0 ~ 4 ℃ during described precooling operation, and pre-cool time was more than or equal to 24 hours.
4, in the such scheme, described sterilization treatment refers in pre-freezer the air sterilization system is set, and adopts ozone gas that spinach is sterilized.
5, in the such scheme, described packing container is transparent packing bag or transparent packing bag.
6, in the such scheme, described packing container is packing box or the packaging bag of low barrier material.
7, in the such scheme, the refrigerated storage temperature in the described freezer is 0 ~ 2 ℃.
Because the utilization of the technical program, the present invention compared with prior art has following advantages:
1, because the present invention adopts Modified atmosphere packaging, composite fresh-keeping gas is replaced the air in the packing box of the fresh spinach of packing into, the interior gas mixing ratio of box changes package, form the Mini-type air pressure debugging environment in the box---namely formed the Mini-type air pressure debugging storehouse, thereby reach the breathing that slows down fresh spinach, suppress metabolism, control bacterial reproduction, thereby make fresh spinach reach the fresh-keeping freshness date more than 2 times of freezer, effectively prolonged the freshness date of spinach.
2, because packaging material of the present invention adopt low barrier material, has good heat sealability; Has simultaneously certain gas permeability, in order to keep the gaseous environment in the packing to keep balance.Such packing can also effectively protect spinach to be in a kind of fresh-keeping controlled atmosphere environment that extremely is conducive to, and has simultaneously good commodity value.
Description of drawings
Accompanying drawing 1 is the inventive method flow chart.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment one:
As shown in Figure 1, the air regulating fresh-keeping method of a kind of spinach, described air regulating fresh-keeping method comprises the steps:
1) to the fresh-keeping spinach of need pluck, sorting;
2) spinach after harvesting, the sorting is carried out the precooling operation;
3) spinach after the precooling is carried out sterilization treatment;
4) spinach after will sterilizing places in the packing container, and passes into the mist of oxygen, carbon dioxide and nitrogen in the described packing container, is that the concentration of 1-8%, carbon dioxide is 1-6% so that the concentration of packing container nitrogen is the concentration of 85-95%, oxygen;
5) spinach that controlled atmospheric packing is good is inserted in the freezer and refrigerates.
In the above-mentioned steps:
Described spinach is selected plucking of medium well degree.
Described sorting refers to remove the spinach that corrupt or appearance damages.
The temperature of pre-freezer is 0 ~ 4 ℃ during described precooling operation, and pre-cool time was more than or equal to 24 hours.
Described sterilization treatment refers in pre-freezer the air sterilization system is set, and adopts ozone gas that spinach is sterilized.
Described packing container is the transparent packing box of transparent packing bag or upper strata.
Described packing container is packing box or the packaging bag of low barrier material.
Refrigerated storage temperature in the described freezer is 0 ~ 2 ℃.Packaged fresh spinach is stored in 0 ~ 2 ℃ the freezer, can effectively controls the rate of metabolism of fresh spinach, reduce its respiratory intensity, the reproduction speed of anti-bacteria.
Embodiment two: the air regulating fresh-keeping method of a kind of spinach,
As shown in Figure 1, may further comprise the steps:
1, plucks: during harvesting, choose the spinach of ripe degree about eighty per cant.
2, sorting: screening remove occurred damaging, corrupt spinach, prevent from making a difference each other.
3, precooling: in time precooling after plucking, pre-temperature of ice house is 0～4 ℃, pre-cool time is more than 24 hours, guarantees that when preventing cold damage the central temperature of spinach reaches requirement; Temperature, the humidity of pre-cold-peace packing will be consistent, and prevent condensed water.
4, sterilization: configuration air sterilization system in the pre-freezer, adopt certain density ozone to sterilize.
5, controlled atmospheric packing: adopt the mode of controlled atmospheric packing to pack the strawberry after precooling, the sterilization, adopt the controlled atmosphere ratio as follows: nitrogen: 85-95%, oxygen: 1-8%, carbon dioxide: 1-6%.
6, warehouse-in: packaged product is put into fresh-keeping warehouse, and the temperature of fresh-keeping warehouse should be controlled at 0～2 ℃, temperature fluctuation is more little more be conducive to fresh-keeping.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (8)
1. the air regulating fresh-keeping method of a spinach, it is characterized in that: described air regulating fresh-keeping method comprises the steps:
1) to the fresh-keeping spinach of need pluck, sorting;
2) spinach after harvesting, the sorting is carried out the precooling operation;
3) spinach after the precooling is carried out sterilization treatment;
4) spinach after will sterilizing places in the packing container, and passes into the mist of oxygen, carbon dioxide and nitrogen in the described packing container, is that the concentration of 1-8%, carbon dioxide is 1-6% so that the concentration of packing container nitrogen is the concentration of 85-95%, oxygen;
5) spinach that controlled atmospheric packing is good is inserted in the freezer and refrigerates.
2. the air regulating fresh-keeping method of spinach according to claim 1, it is characterized in that: described spinach is selected plucking of medium well degree.
3. the air regulating fresh-keeping method of spinach according to claim 1 is characterized in that: described sorting refers to remove corrupt or the spinach of damage occurs.
4. the air regulating fresh-keeping method of spinach according to claim 1 is characterized in that: the temperature of pre-freezer is 0 ~ 4 ℃ during described precooling operation, and pre-cool time was more than or equal to 24 hours.
5. the air regulating fresh-keeping method of spinach according to claim 1 is characterized in that: described sterilization treatment refers in pre-freezer the air sterilization system is being set, and adopts ozone gas that spinach is sterilized.
6. the air regulating fresh-keeping method of spinach according to claim 1, it is characterized in that: described packing container is transparent packing bag or transparent packing box.
7. the air regulating fresh-keeping method of spinach according to claim 1 is characterized in that: described packing container is packing box or the packaging bag of low barrier material.
8. the air regulating fresh-keeping method of spinach according to claim 1 is characterized in that: the refrigerated storage temperature in the described freezer is 0 ~ 2 ℃.
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| CN 201210496955 CN103004969A (en) | 2012-11-29 | 2012-11-29 | Modified atmosphere preservation method of spinach |
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| CN 201210496955 CN103004969A (en) | 2012-11-29 | 2012-11-29 | Modified atmosphere preservation method of spinach |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104322662A (en) * | 2014-12-02 | 2015-02-04 | 江南大学 | Regulating and controlling preservation method for leaf vegetable mixed atmosphere control storage of ocean vessel |
| CN104757101A (en) * | 2015-04-22 | 2015-07-08 | 浙江省农业科学院 | Small-package air-conditioning freshness-retaining method for caraways |
| CN104920595A (en) * | 2015-04-30 | 2015-09-23 | 北京农学院 | A spinach preservation method using modified atmosphere packaging technology |
| CN105746686A (en) * | 2014-12-19 | 2016-07-13 | 上海伊禾农产品科技发展股份有限公司 | Controlled atmosphere preservation method of Capsella bursa-pastoris |
| CN106578004A (en) * | 2016-11-30 | 2017-04-26 | 贵州向黔冲综合农业有限公司 | Fresh keeping method of vegetables during logistics transportation |
| CN107432316A (en) * | 2017-09-11 | 2017-12-05 | 海之星（福建）远洋渔业有限公司 | A kind of fresh-keeping of vegetables method suitable for ocean-going vessel |
| CN107950643A (en) * | 2017-12-11 | 2018-04-24 | 阜阳市鸿业生态农业科技有限公司 | A kind of preservation method of plum picking |
| CN110269089A (en) * | 2019-06-14 | 2019-09-24 | 中国农业科学院农产品加工研究所 | The vacuum pre-cooling method for storing and refreshing of spinach |
| CN111513130A (en) * | 2020-05-06 | 2020-08-11 | 湖北省农业科学院农产品加工与核农技术研究所 | Method for sterilizing and refreshing fruits and vegetables by combining modified atmosphere packaging with electrostatic field |
| CN115152831A (en) * | 2022-07-12 | 2022-10-11 | 湖南应用技术学院 | Cold-chain logistics ecological preservation method for vegetables |
-
2012
- 2012-11-29 CN CN 201210496955 patent/CN103004969A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104322662A (en) * | 2014-12-02 | 2015-02-04 | 江南大学 | Regulating and controlling preservation method for leaf vegetable mixed atmosphere control storage of ocean vessel |
| CN105746686A (en) * | 2014-12-19 | 2016-07-13 | 上海伊禾农产品科技发展股份有限公司 | Controlled atmosphere preservation method of Capsella bursa-pastoris |
| CN104757101A (en) * | 2015-04-22 | 2015-07-08 | 浙江省农业科学院 | Small-package air-conditioning freshness-retaining method for caraways |
| CN104920595A (en) * | 2015-04-30 | 2015-09-23 | 北京农学院 | A spinach preservation method using modified atmosphere packaging technology |
| CN106578004A (en) * | 2016-11-30 | 2017-04-26 | 贵州向黔冲综合农业有限公司 | Fresh keeping method of vegetables during logistics transportation |
| CN107432316A (en) * | 2017-09-11 | 2017-12-05 | 海之星（福建）远洋渔业有限公司 | A kind of fresh-keeping of vegetables method suitable for ocean-going vessel |
| CN107950643A (en) * | 2017-12-11 | 2018-04-24 | 阜阳市鸿业生态农业科技有限公司 | A kind of preservation method of plum picking |
| CN110269089A (en) * | 2019-06-14 | 2019-09-24 | 中国农业科学院农产品加工研究所 | The vacuum pre-cooling method for storing and refreshing of spinach |
| CN111513130A (en) * | 2020-05-06 | 2020-08-11 | 湖北省农业科学院农产品加工与核农技术研究所 | Method for sterilizing and refreshing fruits and vegetables by combining modified atmosphere packaging with electrostatic field |
| CN115152831A (en) * | 2022-07-12 | 2022-10-11 | 湖南应用技术学院 | Cold-chain logistics ecological preservation method for vegetables |
| CN115152831B (en) * | 2022-07-12 | 2023-09-05 | 湖南应用技术学院 | Vegetable cold-chain logistics ecological preservation method |
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Application publication date: 20130403 |