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Preparation method of fish collagen

A technology of fish collagen and fish skin, applied in chemical instruments and methods, animal/human protein, connective tissue peptide, etc., can solve the problems of bitter smell, large volume of extraction liquid, high salt content, etc., and avoid a large amount of poisonous The use of harmful solvents, broad application prospects, and good water solubility

Inactive Publication Date: 2015-06-03
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process has the following disadvantages: long product production cycle, large volume of extract, incomplete removal of impurities from enzymolysis solution, large amount of enzyme, high production cost, and poor quality of finished products (often accompanied by bitter smell, taste, etc.) Poor, poor water solubility, high salt content)

Method used

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  • Preparation method of fish collagen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Wash 1 kg of fish skin with water to remove some colored impurities. Add the pretreated fish skin into a high-speed shearing machine, add 10 times the weight of water and a mixed solution of ethanol (2:1, v : v ), heating with circulating water, controlling the temperature of the system at 45±1°C, performing shear extraction, so that the particle size of the fish skin reaches 10-15 microns, and obtaining a crude fish collagen extract. The crude fish collagen extract is filtered, and the residue is discarded to obtain a fish collagen extract. After the solvent is recovered, the fish collagen extract is concentrated to a relative density of 2.00, and the fish collagen product is obtained after spray drying. The product is a light yellow powder with good water solubility and no fishy smell. The purity of fish collagen is 56%.

Embodiment 2

[0023] Wash 5 kg of fish skin with water to remove some colored impurities. Add the pretreated fish skin to the homogenizer connected, add 25 times the weight of water, heat with steam, control the system temperature at 64±1°C, and carry out shear extraction to make the particle size of the fish skin reach 70- 90 microns to obtain the crude fish collagen extract. The crude fish collagen extract is filtered, and the residue is discarded to obtain a fish collagen extract. After the solvent is recovered, the fish collagen extract is concentrated to a relative density of 1.30, and the fish collagen product is obtained after freeze-drying. The product is white, with good water solubility and no fishy smell. The purity of fish collagen is 95%.

Embodiment 3

[0025] Wash 10 kg of fish skin with water to remove some colored impurities. Add the pretreated fish skin to the colloid mill, add 20 times the weight of water, ethanol and ethyl acetate mixed solvent (0.5:2:0.1, v : v : v ), use steam heating, control the system temperature at 30±1°C, use colloid mill to carry out circular shear extraction, make the particle size of fish skin reach 50-70 microns, and obtain fish collagen crude extract. The crude fish collagen extract is filtered, and the residue is discarded to obtain a fish collagen extract. After the solvent is recovered, the fish collagen extract is concentrated to a relative density of 1.50, and the fish collagen product is obtained after spray drying. The product is a light yellow powder with good water solubility and no fishy smell. The purity of fish collagen is 73%.

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Abstract

The invention discloses a preparation method of fish collagen, which comprises the following steps: pretreating fish skin as a raw material, adding pretreated fish skin into a shearing device, adding a solvent, performing extraction by a high-shear dispersion and emulsification method, performing filtration to obtain a fish collagen extract, and performing concentration and drying to obtain a fish collagen product. The key of preparation method is to use the high-shear dispersion and emulsification method, and the obtained fish collagen product has good water solubility and no fishy smell and can be widely applied to the industries of medicines, health-care products, foodstuff, cosmetics and the like.

Description

technical field [0001] The invention belongs to the technical field of natural product extraction, and in particular relates to a method for preparing fish collagen from fish skin by using high-shear dispersion emulsification technology. Background technique [0002] Collagen is a white, opaque, unbranched fibrous protein that plays a role in binding tissues in animal cells. Collagen is rich in 18 kinds of amino acids except tryptophan and cysteine, among which there are 7 kinds of amino acids necessary to maintain human growth. Fish collagen is mainly extracted from tilapia, cod fresh skin and fish scales through bio-enzyme directional shearing technology. It is mainly type I collagen with a molecular weight between 2000-5000 Da in length and high digestibility and absorption , thermal stability is excellent, has excellent bio-affinity, and can play its functions of penetration, moisturizing and repairing well. At present, the preparation of fish collagen from discarded f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07K14/78C07K1/14
CPCC07K14/78
Inventor 刘永峰刘毅裴栋魏鉴腾邸多隆
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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