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Preparation method of fish scale gelatin starch antioxidant edible composite film

A technology of fish scale gelatin and composite film, which is applied in the fields of medicine and food to achieve the effect of improving the application value

Inactive Publication Date: 2015-02-18
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For above-mentioned present situation, the present invention uses waste grass carp fish scale as raw material, through the preparation of grass carp fish scale gelatin extraction, tea polyphenol extract, gelatin, corn amylose tea polyphenol liquid preparation, the preparation of gelatin edible composite film aims to provide A new method for preparing an edible composite film with high oxidation resistance and high tensile strength, which helps to solve environmental pollution and broaden the application value of fish scales

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Extraction of fish scale gelatin: Clean the grass carp fish scales, dry them in the sun, crush them, decalcify them with 0.5 mol / L citric acid for 0.5 hours, extract them in a water bath at 80°C for 2 hours, and filter to obtain the gelatin supernatant. Concentrating the glue solution and freeze-drying to obtain fish scale gelatin;

[0018] 2. Preparation of tea polyphenol extract: Add 10g of tea into 150mL of boiling water, stir continuously for 10min, filter to obtain supernatant;

[0019] 3. Preparation of fish scale gelatin and starch solution: Weigh appropriate amount of fish scale gelatin and corn amylose and dissolve them in the tea polyphenol preparation solution, and the mass fractions are 4% (w / w) and 3% (w / w) respectively. Each 50mL, spare;

[0020] 4. Preparation of composite membrane solution: Measure fish scale gelatin and starch tea polyphenol solution, mix according to the volume ratio of 1:1, the volume added is 40mL, the amount of glycerin added is...

Embodiment 2

[0023] 1. Extraction of fish scale gelatin: clean grass carp fish scales, dry them in the sun, crush them, use 1 mol / L citric acid to decalcify them for 1 hour, extract them in a water bath at 80°C for 2 hours, and filter to obtain gelatin supernatant; concentrate the glue solution and freeze-dry to obtain fish scales gelatin;

[0024] 2. Preparation of tea polyphenol extract: Add 20g of tea into 150mL of boiling water, stir continuously for 10min, filter to obtain supernatant;

[0025] 3. Preparation of fish scale gelatin and starch solution: Weigh appropriate amount of fish scale gelatin and corn amylose and dissolve them in the tea polyphenol preparation solution, and the mass fractions are 6% (w / w) and 4% (w / w) respectively. Each 50mL, spare;

[0026] 4. Preparation of composite membrane solution: Measure fish scale gelatin and starch tea polyphenol solution, mix according to the volume ratio of 1:1, the volume added is 42.5mL each, the amount of glycerin added is 10mL, w...

Embodiment 3

[0029] 1. Extraction of fish scale gelatin: Clean the grass carp fish scales, dry them in the sun, mince them, decalcify them with 1.5 mol / L citric acid for 1.5 hours, extract them in a water bath at 80°C for 2 hours, and filter to obtain the gelatin supernatant. Concentrating the glue solution and freeze-drying to obtain fish scale gelatin;

[0030] 2. Preparation of tea polyphenol extract: add 30g of tea into 150mL of boiling water, stir continuously for 10min, filter to obtain supernatant;

[0031] 3. Preparation of fish scale gelatin and starch solution: Weigh appropriate amount of fish scale gelatin and corn amylose and dissolve them in the tea polyphenol preparation solution, and the mass fractions are 8% (w / w) and 5% (w / w) respectively. Each 50mL, spare;

[0032] 4. Preparation of composite membrane solution: measure fish scale gelatin and starch tea polyphenol solution, mix according to the volume ratio of 1:1, the added volume is 45mL, the amount of glycerin added is...

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Abstract

The invention relates to a preparation method of a fish scale gelatin starch antioxidant edible composite film. The preparation method comprises the following steps of extracting tea polyphenol from tea leaves, and preparing a tea polyphenol solution for preparation of the film; respectively dissolving the gelatin and starch in the tea polyphenol to prepare gelatin tea polyphenol solution and starch tea polyphenol solution with different mass fractions, mixing according to a volume ratio of 1 to 1, adding glycerol and preparing the composite film solution. The edible composite film prepared by the preparation method disclosed by the invention is degradable, and the preparation method is simple and free of environmental pollution; compared with the pure gelatin film and starch film, the edible composite film has the advantages of strong oxidation resistance, high tensile strength and low solubility and can be applied in food packaging; the migration and diffusion of water, oil and other ingredients in food are delayed, the oxidization of the food is decreased, the shelf life of the food is prolonged, the food is ensured to be nutritional and safe and the nutrition of the food is increased. The preparation method provides a novel method for the preparation of the antioxidant edible composite film, especially the manufacturing of the composite film having the advantages of high oxidation resistance, high tensile strength and low solubility.

Description

technical field [0001] The invention belongs to the technical fields of food and medicine, and relates to a method for producing fish scale gelatin by using fish scale waste and preparing an edible anti-oxidation composite film. Background technique [0002] At present, plastic products are widely used in food packaging, but they are not easy to decompose and rot, and incineration will pollute the environment. At the same time, during the processing and storage of food, some additives and plasticizers left in the plastic may migrate from the plastic bag to the food, thus bringing potential safety hazards to the food. Therefore, finding a new type of healthy and environmentally friendly edible packaging material has gradually become the development direction of the food packaging industry. Common raw materials for making edible films are polysaccharides, lipids, proteins, etc. Edible protein film factor [0003] Compared with polysaccharides and lipid membranes, it has bet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L89/00C08L3/12C08K5/1545C08H1/00
Inventor 涂宗财黄涛王辉马达张燕李金林杨文华
Owner JIANGXI NORMAL UNIV
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