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Method for extracting gelatin from grass carp fishskin

A fish skin and grass carp technology, applied in the field of gelatin extraction, can solve the problems of low purity and complicated process of gelatin products, and achieve the effect of high purity and high yield

Active Publication Date: 2016-11-09
FOSHAN WIN COSMETIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But above-mentioned extraction method exists the problem that process is complicated, the purity of gelatin product is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: After breaking the skin of grass carp into mud, mix the mud with 5% citric acid aqueous solution, the mass ratio of mud to citric acid solution is 1:4, and carry out under the action of ultrasound Stir and disperse, the ultrasonic frequency range is 20KHZ, the ultrasonic power is 0.2KW, the dispersion time is 20min, the temperature range of the solution during the dispersion process is 15°C, and the solid matter is filtered out;

[0026] In the second step, the solid obtained in the first step is mixed with petroleum ether. The weight ratio of the solid to petroleum ether is 1:1. After soaking at 30°C, the solid is filtered out, and the solvent is evaporated under reduced pressure;

[0027] In the third step, the solid obtained in the second step is mixed with an alkali solution, and the alkali solution refers to a composition of 0.5% NaOH and 1% Na 2 CO 3 The aqueous solution is heated up for extraction, the extraction temperature is 60°C, the extraction time ...

Embodiment 2

[0031] Step 1: After breaking the skin of grass carp into mud, mix the mud with 5% citric acid aqueous solution, the mass ratio of mud to citric acid solution is 1: 7, and carry out under the action of ultrasound Stir and disperse, the ultrasonic frequency range is 40KHZ, the ultrasonic power is 0.4KW, the dispersion time is 40min, the temperature range of the solution during the dispersion process is 35°C, and the solids are filtered out;

[0032] In the second step, the solid obtained in the first step is mixed with petroleum ether. The weight ratio of the solid to petroleum ether is 1:3. After soaking at 35°C, the solid is filtered out, and the solvent is removed by evaporation under reduced pressure;

[0033] In the third step, the solid obtained in the second step is mixed with an alkali solution, and the alkali solution refers to a composition of 1% NaOH and 1.5% Na 2 CO 3 The aqueous solution is heated up for extraction, the extraction temperature is 65°C, and the extr...

Embodiment 3

[0037] Step 1: After breaking the skin of grass carp into mud, mix the mud with 5% citric acid aqueous solution, the mass ratio of mud to citric acid solution is 1:5, and proceed under the action of ultrasound Stir and disperse, the ultrasonic frequency range is 30KHZ, the ultrasonic power is 0.3KW, the dispersion time is 30min, the temperature range of the solution during the dispersion process is 25°C, and the solid matter is filtered out;

[0038] In the second step, the solid obtained in the first step is mixed with petroleum ether. The weight ratio of the solid to petroleum ether is 1:2. After soaking at 32°C, the solid is filtered out, and the solvent is removed by evaporation under reduced pressure;

[0039] In the third step, the solid obtained in the second step is mixed with an alkali solution, and the alkali solution refers to a composition of 0.8% NaOH and 1.2% Na 2 CO 3 The aqueous solution is heated up for extraction, the extraction temperature is 62°C, and the ...

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Abstract

The invention relates to a method for extracting gelatin from grass carp fishskin, and belongs to the technical field of gelatin extracting. The method comprises the steps that 1, after the grass carp fishskin is crushed into paste, the paste is mixed with a 5% citric acid aqueous solution, dispersing under stirring is conducted under the ultrasonic action, and solid substances are filtered out; 2, the solid substances obtained in the step 1 are mixed with petroleum ether, the solid substances are filtered out after being soaked, and reduced pressure evaporation is conducted to remove the solvent; 3, the solid substances obtained in the step 2 are mixed with an alkaline solution, and extracting under heating is conducted to obtain an extracting solution; 4, wheat husk powder is added into the extracting solution, stirring is conducted for adsorption, after the powder is filtered, filtrate is centrifuged, and supernatant liquid is taken; 5, the supernatant liquid is concentrated through a nanofiltration membrane, and spray drying is conducted on a nano-filtrated concentrated solution to obtain the fishskin gelatin. According to the method, the high-purity high-yield gelatin product can be extracted from the fishskin and meets the medicinal standards.

Description

technical field [0001] The invention relates to a method for extracting gelatin from grass carp skin, belonging to the technical field of gelatin extraction. Background technique [0002] Gelatin is a protein extracted from the raw gelatin (also known as collagen) of connective tissues such as animal bones, raw hides, tendons, and membranes. Its molecular weight ranges from tens of thousands to hundreds of thousands, and it is called industrial monosodium glutamate. It is widely used in many fields such as medicine, health care, food processing, cosmetics, chemical industry, photosensitive materials, etc., and there is a trend of short supply in domestic and foreign markets. [0003] In addition to water and inorganic salts below 16% in gelatin, the protein content accounts for more than 82%. Protein contains 18 kinds of amino acids needed by the human body, 7 of which are necessary for the human body, of which glycine accounts for about 1 / 3, Proline and hydroxyproline ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09H3/00
CPCC09H3/00
Inventor 钱玉连
Owner FOSHAN WIN COSMETIC
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