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Fresh keeping and fragrance enhancement method of fresh-cut apples through active film coating

An apple and fresh-cut technology, applied in the direction of protecting fruits/vegetables with a protective coating layer, can solve the problems of browning of fresh-cut apples, dry cut surface, short fresh-keeping period, etc., and achieves rich flavor, fewer operation steps, and lower cost. low effect

Inactive Publication Date: 2019-06-07
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned defects of the prior art, the technical problems to be solved by the present invention are problems such as browning, discoloration, excessive softening of fresh-cut apples, dry cut surface, loss of flavor, mildew and pollution, etc. Keep fresh while increasing the rich flavor of apples

Method used

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  • Fresh keeping and fragrance enhancement method of fresh-cut apples through active film coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1: Preparation of Apple Flavor Liposomes:

[0028] Add soybean lecithin and cholesterol to absolute ethanol solution at a mass ratio of 8:1, heat in an environment of 45°C to obtain a blended solution with a mass concentration of 2.25%; add the obtained blended solution to 10% natural apple essence. After adding the natural apple essence, the blended solution was vacuum rotary distilled and then dissolved in 20ml PBS buffer solution and ultrasonically obtained to obtain a natural apple essence liposome suspension with a concentration of 1.125%, which was stored in a refrigerator at 4°C until use. Natural apple flavor comes from the condensation recovery during apple processing, which has the characteristics of natural, safe and pure flavor. Liposome embedding of natural apple essence can delay its volatilization and loss, and at the same time achieve slow release effect through embedding;

[0029] Step 2: Preparation of Active Membrane Coating Solution:

[0030]...

Embodiment 2

[0038] A fresh-cut apple active film coating fresh-keeping and flavor-enhancing method is as described in Example 1, wherein step 1 prepares apple flavor liposomes, and the amount of natural apple flavor added to the blending solution is 6%.

Embodiment 3

[0040] A method for fresh-cut apple active membrane coating preservation and flavor enhancement is as described in Example 1, wherein the active membrane coating liquid is prepared in step 2, and the addition amount of natural apple essence liposome suspension is 5%.

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Abstract

The invention provides a fresh keeping and fragrance enhancement method of fresh-cut apples through an active film coating, and relates to the field of fresh-cut vegetable and fruit processing. The fresh keeping and fragrance enhancement method comprises the following steps of step 1, preparing an apple essence liposome; step 2, preparing active film coating liquid; step 3, pretreating fresh-cut apples; step 4, performing impregnation and filming; and step 5, performing refrigeration and storage. The method disclosed by the invention is few in operation steps, simple in operating method, highin safety and low in cost, and is favorable for technique promotion and industrialized mass production; and the obtained fresh-cut apples are rich in flavor, microorganism restraining effects are obvious, the organoleptic quality of apples is improved, and the shelf life is as long as 12 days. The fresh keeping fragrance enhancement method through the active film coating provided by the inventioncan be expanded to be used for developing a method suitable for respiratory climacteric type fruit and vegetable fresh keeping, flavor losses caused by respiration acceleration can be effectively covered, and the development of fresh-cut fruit and vegetable industry is promoted.

Description

technical field [0001] The invention relates to the field of fresh-cut fruits and vegetables processing, in particular to a method for fresh-cut apple active film coating to preserve freshness and increase flavor. Background technique [0002] Fresh-cut fruits and vegetables refer to ready-to-eat products formed after a series of operations such as trimming, peeling and packaging of fresh fruits and vegetables. Apple is a common fruit and vegetable product. Because of its rich nutrition, delicious taste, and comprehensive nutrition, it is widely used in food supply and service industries, school nutrition meals, party picnics, etc. It is deeply loved by consumers and the catering industry. The market demand is increasing year by year. expand. [0003] Due to the unique physiological characteristics of apples, the trimming, peeling, cutting and other treatments in the processing process will lead to the destruction of the structure of apple cells, the disappearance of enzyme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/16
Inventor 邓云孙中琦丁彦方王丹凤
Owner SHANGHAI JIAO TONG UNIV
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