Antibacterial coating fresh-keeping method for smooth-skinned papaya

A technology of coating fresh-keeping and light-skin papaya, applied in the direction of protecting fruits/vegetables with a coating protective layer, can solve the problems of nutritional value and edible, medicinal quality decline, loss of nutrients, loss of water and weight, etc., to achieve production The effect of low cost, delay of weight loss and freshness loss, and simple operation

Active Publication Date: 2019-07-05
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, quality problems such as loss of water and weight, loss of nutrients, and rot of papaya with light skin will occur during storage, resulting in a decline in its nutritional value and edible and medicinal quality.
[0003] There have been some reports on the storage and preservation of papaya at home and abroad, but most of them focus on the research on physical preservation measures such as cold storage and controlled atmosphere storage. There is no report on the research on the preservation of papaya with film method

Method used

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  • Antibacterial coating fresh-keeping method for smooth-skinned papaya

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: the preparation of antibacterial coating fresh-keeping solution

[0039] Dissolve chitosan with a deacetylation degree of 92% in 0.5% (volume percent) acetic acid solution, then add p-hydroxybenzoate, natamycin and ε-polylysine, mix well, and prepare An antibacterial coating fresh-keeping liquid, which contains 1.5% chitosan, 0.06% paraben, 0.005% natamycin, and 0.04% ε-polylysine in the antibacterial coating fresh-keeping liquid.

Embodiment 2

[0040] Embodiment 2: the preparation of antibacterial coating fresh-keeping solution

[0041]Dissolving chitosan with a deacetylation degree of 92% in 0.5% (volume percent) acetic acid solution, then adding parabens, natamycin and ε-polylysine, mixing evenly, is prepared into An antibacterial coating fresh-keeping liquid, which contains 1% chitosan, 0.04% paraben, 0.005% natamycin, and 0.06% ε-polylysine in the antibacterial coating fresh-keeping liquid.

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Abstract

The invention discloses an antibacterial coating fresh-keeping method for smooth-skinned papaya. The antibacterial coating fresh-keeping method for the smooth-skinned papaya comprises the following steps: immersing the smooth-skinned papaya into an antibacterial coating fresh-keeping liquid, wherein the antibacterial coating fresh-keeping liquid comprises the following components in percentages bymass: 1%-2% of chitosan, 0.03%-0.1% of paraben, 0.003%-0.01% of natamycin and 0.02%-0.1% of epsilon-polylysine, and dipping for 30-90 seconds; and then draining the antibacterial coating fresh-keeping liquid from the dip-coated smooth-skinned papaya, drying, placing the dried smooth-skinned papaya into a plastic box, and storing or selling in circulation at the temperature of 0-4 DEG C. The antibacterial coating fresh-keeping liquid provided by the invention can inhibit the respiration of smooth-skinned papaya and the growth and propagation of microorganisms, has a good fresh-keeping effect,and can obviously delay the occurrence of weight loss and freshness loss, nutrient and functional component loss, rot and other problems in the storage process of the smooth-skinned papaya.

Description

technical field [0001] The invention relates to the technical field of food preservation, in particular to an antibacterial coating film preservation method for smooth-skinned papaya. Background technique [0002] Papaya [Chaenomeles sinensis (Thouin) Koehne] is a plant of the genus Papaya in the family Rosaceae, also known as hawthorn, crabapple, and pear. say. Papaya with light skin is favored by consumers because of its ornamental, edible and medicinal functions. As a medicine and food with the same source, papaya with light skin is rich in nutrients and functional components, and its market prospects and profit margins are very broad. However, quality problems such as water loss and weight loss, nutrient loss, and rot will occur in the papaya with light skin during storage, resulting in a decline in its nutritional value and edible and medicinal qualities. [0003] There have been some reports on the storage and preservation of papaya at home and abroad, but most of th...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): A23B7/16
CPCA23B7/16
Inventor王兆升刘升军王晓丽
OwnerSHANDONG AGRICULTURAL UNIVERSITY