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Fresh-keeping method of fresh blueberries

A fresh-keeping method and technology for fresh berries, which are 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 problems such as bad flavor, poor mechanical strength, and low light transmittance of the film, and achieve inhibition The growth of bacteria, the effect of increasing shelf life and reducing the rate of decay

Pending Publication Date: 2022-07-05
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the lipid film is subject to certain restrictions because it is easily oxidized to produce bad flavor, low film transmittance, poor mechanical strength, and waxy taste.

Method used

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  • Fresh-keeping method of fresh blueberries
  • Fresh-keeping method of fresh blueberries
  • Fresh-keeping method of fresh blueberries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A fresh-keeping method for blueberry fresh fruit, the steps are as follows:

[0028] (1) The blueberry fresh fruit is soaked in a concentration of 1.5wt% sodium alginate aqueous solution for 2min (room temperature), taken out and dried, the sodium alginate aqueous solution also contains glycerol, and the concentration of the glycerin in the aqueous solution is 0.5wt% ;

[0029] (2) soaking the blueberry fresh fruit processed in step (1) in an aqueous solution containing ε-PL and N,O carboxymethyl chitosan for 2 min (room temperature), taking out and drying, wherein the ε-PL in the aqueous solution and the mass concentration of N,O carboxymethyl chitosan are both 4wt%;

[0030] (2) Steps (1)-(2) were repeated to obtain a two-layer sodium alginate / ε-polylysine layer-by-layer self-assembled edible film blueberry, which was the LBL2 group.

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Abstract

The invention discloses a fresh-keeping method of fresh blueberries, and relates to the technical field of fresh-keeping of blueberries. The fresh-keeping method comprises the following steps: soaking fresh blueberries in a sodium alginate aqueous solution, taking out, drying, soaking in an aqueous solution containing epsilon-PL and N, O carboxymethyl chitosan, taking out, drying, and repeatedly soaking in the two solutions. According to the method, the surfaces of the blueberries are coated with multiple layers of edible films, so that the storage life of the blueberries is prolonged, and the blueberries are prevented from being rotted and deteriorated in the storage process.

Description

technical field [0001] The invention belongs to the technical field of fruit preservation, and in particular relates to a fresh-keeping method for blueberry fresh fruit. Background technique [0002] At present, the fresh-keeping technologies of blueberries are mainly divided into low-temperature refrigeration, modified atmosphere storage, irradiation treatment and chemical preservatives. The application and promotion of ice temperature and modified atmosphere technology are limited due to the large size of supporting equipment, high price, and high energy consumption requirements; irradiation treatment requires higher equipment, and consumers have doubts about the irradiation process; the use of chemical reagents is carcinogenic , toxic residues, environmental pollution and other safety hazards are restricted in the commercial promotion of fruits and vegetables. [0003] Polysaccharide edible films are mainly composed of polysaccharides with high relative molecular mass as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/16A23B7/154
CPCA23B7/16A23B7/154A23V2002/00A23V2200/10A23V2250/5026A23V2250/511Y02P60/85A23L3/349A23L3/3499A23L3/3526A23B7/085
Inventor 陈杰孟岳成房升李延华刘一帆
Owner ZHEJIANG GONGSHANG UNIVERSITY