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Film coating fresh keeping agent for cherries, as well as preparation method and application method of film coating fresh keeping agent

A technology of coating preservatives and cherries, which is applied in the fields of fruit and vegetable preservation, protection of fruits/vegetables with a coating protective layer, application, etc., can solve the problems of chemical preservative safety hazards and other problems, maintain color and quality, and prolong freshness period , the effect of slowing down the release

Pending Publication Date: 2018-05-15
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the object of the present invention provides a kind of cherry coating preservative based on the concentrated solution of phenyllactic acid produced by lactic acid bacteria and carboxymethyl chitosan and provides the using method of this preservative to overcome other chemical preservatives in the prior art. The technical problem of safety hazards in preservatives

Method used

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  • Film coating fresh keeping agent for cherries, as well as preparation method and application method of film coating fresh keeping agent
  • Film coating fresh keeping agent for cherries, as well as preparation method and application method of film coating fresh keeping agent
  • Film coating fresh keeping agent for cherries, as well as preparation method and application method of film coating fresh keeping agent

Examples

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Effect test

Embodiment 1

[0045] In this embodiment, a cherry coating preservative based on phenyllactic acid concentrate and carboxymethyl chitosan is made from the following raw material components: 30wt% phenyllactic acid concentrate, 1.5wt% carboxymethyl chitosan, ice Acetic acid 0.5wt%, edible glycerin 1wt%, balance is water;

[0046] The preparation process of above-mentioned cherry coated preservative is as follows:

[0047] Weigh raw materials according to the composition of the above-mentioned preservative, add glacial acetic acid into water to make a solution, add carboxymethyl chitosan and glycerin into the glacial acetic acid aqueous solution and ultrasonically stir until dissolved, mix the above solution with phenyllactic acid concentrate evenly Get cherry coating preservative.

Embodiment 2

[0049] In this embodiment, a cherry coating preservative based on phenyllactic acid concentrate and carboxymethyl chitosan is made from the following raw material components: 20wt% phenyllactic acid concentrate, 1wt% carboxymethyl chitosan, glacial acetic acid 0.3wt%, edible glycerin 2wt%, and the balance is water; the specific preparation process is the same as in Example 1.

Embodiment 3

[0051] In this embodiment, a cherry coating preservative based on phenyllactic acid concentrate and carboxymethyl chitosan is made of the following raw material components: 25wt% phenyllactic acid concentrate, 1.25wt% carboxymethyl chitosan, ice 0.4wt% acetic acid, 1.5wt% edible glycerin, and the balance is water; the specific preparation process is the same as in Example 1.

[0052] In order to further verify the fresh-keeping effect of the cherry-coated antistaling agent provided by the embodiments of the present invention 1-3, the cherry-coated antistaling agent provided in Example 1 is taken as an example below, and two varieties of Meizao cherry and friendship cherry are selected for specific use. for example.

[0053] The concrete use process of this cherry coated preservative is as follows:

[0054] 1) Pick fresh cherries, keep the stalks, remove mechanically damaged and rotten fruits, select products with uniform color, and transport them to the fresh-keeping treatmen...

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Abstract

The invention discloses a film coating fresh keeping agent for cherries, as well as a preparation method and an application method of the film coating fresh keeping agent. The film coating fresh keeping agent comprises 20-30wt% of phenyllactic acid concentrate, 1-1.5wt% of carboxymethyl chitosan, 0.3-0.5wt% of glacial acetic acid, 1-2wt% of edible glycerine and 66-77wt% of water, wherein the phenyllactic acid concentrate is prepared through the following steps of inoculating MRS culture mediums with addition of 0.3wt% sodium phenylpyruvate, with lactobacillus plantarum LD1.0001 as raw materials, and performing fermentation, and the content of phenyllactic acid is 20.0g / kg or above. The invention also relates to the application method of the film coating fresh keeping agent. The applicationmethod comprises the following steps of placing the prepared film coating fresh keeping agent for cherries in a film coating trough of cherry precooling and sorting film coating equipment, immersingthe precooled and sorted cherries into the fresh keeping agent for 1-2min, performing cold air drying on the cherries after film coating, performing loading into an expandable polystyrene packing boxin which absorbent paper is matted, and placing the expandable polystyrene packing box into a freezer of minus 1-1 DEG C for preservation. Compared with the fresh keeping time of the cherries by an ordinary low-temperature fresh keeping method, the fresh keeping time of the cherries which are subjected to low-temperature fresh keeping by using the film coating fresh keeping agent for cherries is prolonged by 20 days or above, and the film coating fresh keeping agent disclosed by the invention belongs to a fresh keeping method which is safe, efficient, simple in operation and low in cost.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping of fruits and vegetables, and in particular relates to a coating-film preservative for cherries, a preparation method and an application method thereof. Background technique [0002] Cherry is a plant of the subgenus Prunus in the Rosaceae family. It is mainly planted in the north and has an early maturity period. It is known as "the first spring fruit in the north". Cherry fruit is bright in color, exquisite and crystal clear, tender and juicy, sweet and sour, rich in nutrition, good in appearance and internal quality, known as "treasures in fruits", and has high medical and health care value. Invigorating qi, dispelling rheumatism, and promoting hemoglobin regeneration, it is very beneficial for anemia patients, corneal disease patients, and dry skin patients to eat more cherries. Since 2015, China's cherry output has approached 600,000 tons, and the development of the cherry industry has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/154A23B7/16
CPCA23B7/154A23B7/16
Inventor 贡汉生孔艳辉孙舒扬车长远刘延照杨婷南树港
Owner LUDONG UNIVERSITY
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