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 p

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] Example 1

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

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

[0041] B. Paste the polyvinylidene chloride film on the inner surface of the carton obtained in step A with a thickness of 50 microns;

[0042] C. Place the bottom cardboard cushion 11 on 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 apple in the cardboard spacer 10, paying attention to placing the apple Avoid scratching the skin of the apple during the process; place the top cardboard cushion 8 on the cardboard spacer 10;

[0043] D. On the upper surface of the cardboard cushion 8 on the top of the carton...

Example Embodiment

[0049] Example 2

[0050] According to the steps of Example 1, the amount of dry ice used is 3.6 grams per kilogram of apples; the thickness of the polyvinylidene chloride film is 30 microns; the oxygen absorber is iron-based deoxidizer, and the amount used is 1.6 grams per kilogram of apples; The carbon dioxide absorbent is silica, and the usage amount is 4.5 g / kg apple; the ethylene absorbent is artificial zeolite powder, and the usage amount is 4.6 g / kg apple; the moisture absorbent is silica gel, and the usage amount is 2.5 g / kg. Apples per kilogram. The Red Fuji apples were kept fresh for three months, and the freshness storage experiment tests were carried out for 1 to 3 months. The data and results are as follows:

[0051] The results of the 1-month preservation and storage experiment are

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

[0053] The results of the 2-month preservation and storage experiment are

[0054] Hardness (average): 10...

Example Embodiment

[0058] Example 3

[0059] According to the steps of Example 1, control the ratio of ultra-high molecular weight sodium polyacrylate: water to 1:35; the thickness of the polyvinylidene chloride film is 80 microns; the oxygen absorber is iron-based deoxidizer, and its usage should be controlled within 2.1g / kg apple; carbon dioxide absorbent is soda lime, and the usage amount is 3.8g / kg apple; ethylene absorbent can be tuff fine powder, and the usage amount is 4.2g / kg apple; moisture absorbent Choose silica gel, the usage amount is 1.8 g / kg apple. The Red Fuji apples were kept fresh for three months, and the freshness storage experiment tests were carried out for 1 to 3 months. The data and results are as follows:

[0060] The results of the 1-month preservation and storage experiment are

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

[0062] The results of the 2-month preservation and storage experiment are

[0063] Hardness (average): 10.46 (10 5 ...

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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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