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Natural gas adjusting cardboard box method for apples fresh-keeping

A fresh-keeping method and natural gas technology, which is applied in the fields of fruit and vegetable fresh-keeping, food preservation, and protection of fruits/vegetables with a coating protective layer, which can solve the problems that fresh-keeping storage methods are difficult to guarantee the original quality, and achieve low cost and prolong the fresh-keeping period , good gloss effect

Inactive Publication Date: 2008-06-18
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preserving freshness of apples in a natural controlled atmosphere carton to solve the problem that it is difficult to guarantee the original quality of harvested apples under the conditions of non-refrigerated storage and non-controlled storage.

Method used

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  • Natural gas adjusting cardboard box method for apples fresh-keeping
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Use a carton with a length, width, and height of 380mm×240mm×180mm, with 24 apples (about 5kg) inside, and follow the steps below,

[0040] A, the inner surface of ordinary carton 1 is uniformly coated with ultra-high molecular weight sodium polyacrylate: the coating layer 2 whose proportioning ratio of water is 1: 40, and basically dries;

[0041] B, sticking polyvinylidene chloride film thickness on the inner surface of the carton of step A gained is 50 microns;

[0042] C. Place the bottom cardboard cushion 11 at the bottom of the carton obtained in step B; place the cardboard spacer 10 on the upper surface of the bottom cardboard cushion 11; gently place the apples in the cardboard spacer 10, pay attention to placing the apples Should avoid scratching the apple epidermis in the process; Place the top cardboard cushion layer 8 on the cardboard spacer 10;

[0043] D, the top cardboard cushion layer 8 upper surface of the carton gained in step C lays the oxygen absorb...

Embodiment 2

[0050] According to the step of Example 1, the amount of dry ice used is controlled to be 3.6 grams per kilogram of apples; the thickness of the polyvinylidene chloride film is 30 microns; the oxygen absorber is selected as an iron-based deoxidizer, and its consumption is 1.6 grams per kilogram of apples; The carbon dioxide absorber selects silica, and its usage rate is 4.5 grams per kilogram of apple; the ethylene absorber selects artificial zeolite fine powder, and its usage rate is 4.6 grams per kilogram of apple; the moisture absorber selects silica gel, and its usage rate is 2.5 grams per per kilogram of apples. Red Fuji apples were stored fresh for three months, and then tested for fresh storage for 1 to 3 months. The data and results are as follows:

[0051] The results of one-month fresh-keeping storage experiment were

[0052] Hardness (average): 10.35 (10 5 Pa); sugar content (average value): 12.39 (%)

[0053] The results of the 2-month fresh-keeping storage expe...

Embodiment 3

[0059] According to the step of embodiment 1, control ultrahigh molecular weight sodium polyacrylate: the ratio of water is 1: 35; The thickness of polyvinylidene chloride film is 80 microns; 2.1 grams per kilogram of apples; carbon dioxide absorber is selected from soda lime, and its dosage is 3.8 grams per kilogram of apples; ethylene absorbent can be selected from tuff fine powder, and its usage is 4.2 grams per kilogram of apples; moisture absorbent Select silica gel for use, and its consumption is 1.8 grams per kilogram of apples. Red Fuji apples were stored fresh for three months, and then tested for fresh storage for 1 to 3 months. The data and results are as follows:

[0060] The results of one-month fresh-keeping storage experiment were

[0061] Hardness (average): 10.38 (10 5 Pa); sugar content (average): 12.33 (%)

[0062] The results of the 2-month fresh-keeping storage experiment were

[0063] Hardness (average): 10.46 (10 5 Pa); sugar content (average): 14.9...

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Abstract

Disclosed is a modified atmosphere paper carton preserving method of apple, a coating layer is coated on the internal surface of a common paper carton, the internal surface of the coating layer is adhered with a selective transparent film, and O2 absorbent, CO2 absorbent, ethene absorbent and moisture absorbent are evenly spread and positioned on the upper surface of a bedding course of a cardboard at the top part respectively. The cold storage agent coated on the coating layer selects dry ice or super high molecular polyacrylate hydrogel, the oxygen absorbent adopts organic deoxidizing agent or iron based deoxidizing agent, the carbon dioxide absorbent selects soda lime or silica, the ethene absorbent selects micro-powder such as travertine or permutite, and the moisture absorbent selects molecular sieve or silica gel. The paper carton preserving and storing method of the invention can obviously improve the preserving quality of apple and extend the preservation period of apple, and the preserved apple has the same taste with the just picked apple. The invention has no pollution and toxic hazard to apples and fully meet the hygienic edibility request, and has advantages of convenient storage and transportation, low cost, high benefit and energy saving.

Description

technical field [0001] The invention belongs to the technical field of fruit fresh-keeping packaging, and relates to a method for keeping apples fresh in a natural atmosphere-modified carton. Background technique [0002] In the integrated logistics chain of apple packaging, storage, transportation, and sales, preservation, storage, and transportation methods are key technical issues, which directly affect the edibility, commerciality, and shelf life of apples. [0003] Earth kiln storage method, trench storage method, urn storage method, sand storage method, and cold room storage method are all traditional fresh-keeping storage methods, which have poor fresh-keeping effect, limited storage scale, effect and time, and are not suitable for large-scale fresh-keeping storage. , It is also difficult to meet the needs of modern logistics. Plastic film fresh-keeping bag is a natural modified atmosphere packaging (MAP) fresh-keeping technology, which uses the same selective breath...

Claims

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Application Information

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IPC IPC(8): A23B7/00A23B7/16A23B7/148A23B7/04
Inventor 郭彦峰张伟
Owner XIAN UNIV OF TECH
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