Coating preservation method of pseudosciaena crocea

A technology for coating fresh-keeping and large yellow croaker, which is applied in the direction of preserving meat/fish with a coating protective layer, can solve the problems of cumbersome operation process, poor fresh-keeping effect of large yellow croaker, etc., and achieves simple operation process, good color protection, and food safety. high sex effect

Active Publication Date: 2015-02-04
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of cumbersome operation process and poor fresh-keeping effect of large yellow croaker in the existing method of large yellow croaker coating film preservation in the prior art, and provides a method with simple operation process, low equipment investment, environmental protection and safety, which is suitable for industrial production and can Fresh-keeping method of large yellow croaker coated with film to significantly improve the fresh-keeping period of large yellow croaker

Method used

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  • Coating preservation method of pseudosciaena crocea

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Pretreatment: After freezing the fresh and alive large yellow croaker to death, wash it with 1% sodium bicarbonate solution and drain it.

[0032] (2) Soaking: Put the large yellow croaker in the film-forming preservative and soak it for 30 minutes under vacuum, then take it out. The film preservative is composed of the following components by mass percentage: 1% sodium citrate, 0.5% sodium isoVC, 3% vitamin C, 3% erythritol, 0.3% apple branch polyphenols, 0.3% gluconolactone, 5% disodium EDTA, 0.3% chitosan, 5% pseudophysalis sugar gum, and the balance is water, wherein the film-forming preservative is prepared by the following method:

[0033] (1) Preparation of apple branch polyphenols

[0034]Dry the apple branches after de-leafing to constant weight at 25±2°C and crush them to a powder with a diameter of <1mm. Add an ethanol solution whose mass is 10 times that of the dried apple branches. The content is 70%, ultrasonic extraction for 60min, the temperature o...

Embodiment 2

[0042] (1) Pretreatment: After freezing the fresh and live large yellow croaker to death, wash it with 0.6% sodium bicarbonate solution and drain it.

[0043] (2) Soaking: Put the large yellow croaker in the film-forming preservative and soak it for 25 minutes under vacuum, then take it out. The film preservative is composed of the following components by mass percentage: 0.6% sodium citrate, 0.4% sodium isoVC, 2% vitamin C, 2% erythritol, 0.2% apple branch polyphenols, 0.2% gluconolactone, 4% disodium EDTA, 0.25% chitosan, 2% pseudophysalis sugar gum, and the balance is water, wherein the film-forming preservative is prepared by the following method:

[0044] (1) Preparation of apple branch polyphenols

[0045] Dry the apple branches after de-leafing to constant weight at 25±2°C and crush them to a powder with a diameter of <1 mm. Add an ethanol solution whose mass is 9 times that of the dried apple branches. The volume percentage of ethanol in the ethanol solution is The c...

Embodiment 3

[0053] (1) Pretreatment: After freezing the fresh and live large yellow croaker to death, wash it with 0.5% sodium bicarbonate solution and drain it.

[0054] (2) Soaking: Put the large yellow croaker in the film-forming preservative and soak it for 20 minutes under vacuum conditions, then take it out. The film preservative is composed of the following components by mass percentage: 0.5% sodium citrate, 0.3% sodium isoVC, 1% vitamin C, 1% erythritol, 0.1% apple branch polyphenols, 0.1% gluconolactone, 3% disodium EDTA, 0.2% chitosan, 1% pseudophysalis sugar gum, and the balance is water, wherein the film-forming preservative is prepared by the following method:

[0055] (1) Preparation of apple branch polyphenols

[0056] Dry the apple branches after de-leafing to constant weight at 25±2°C and crush them to a powder with a diameter of <1mm. Add an ethanol solution whose mass is 8 times that of the dried apple branches. The content is 70%, ultrasonically extracted for 30min, ...

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Abstract

The invention dislcoses a coating preservation method of pseudosciaena crocea. The method includes following steps: (1) pre-treatment; (2) a soaking process; (3) a film-forming process; and (4) a packaging and refrigerating process. In the method, a sodium bicarbonate solution with a mass percentage concentration being 0.5-1% is employed for washing the pseudosciaena crocea, a composite film-forming preservative agent is developed on the basis of biochemical characteristics of the pseudosciaena crocea and an air-drying film-forming operation is carried out through cold air. The coating preservation method in operation process, is less in equipment investment, is environmentally-protective and safe, is suitable for industrialized production and can greatly prolong a preserving time of the pseudosciaena crocea on the premise of ensuring an edible quality and a sensory quality of the pseudosciaena crocea. The method is significant in preserving effect and is high in film-forming efficiency.

Description

technical field [0001] The invention relates to the technical field of fresh-keeping aquatic products, in particular to a film-coated fresh-keeping method for large yellow croakers. Background technique [0002] Large yellow croaker, also known as yellow croaker, large yellow croaker, etc., is one of the four traditional seafood and the main economic fish in my country. Large yellow croaker is rich in nutrients such as protein and fat. Due to its high water content and high fat characteristics, the fish meat is easily spoiled. Factors such as autolytic enzyme reaction, microbial reproduction, fat oxidation, and external pollution in fish will cause the quality of fish to deteriorate, produce bad smell, and cause the decline of sensory quality of fish. Therefore, the fresh-keeping method to large yellow croaker just seems very important. [0003] Coating fresh-keeping method is a popular new technology for food preservation at home and abroad. It uses biological macromolecu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B4/10
Inventor 李佩佩张小军郭远明喻亮严忠雍陈荫
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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