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Process for extracting silk extract from silkworm cocoon or silk

A technology of silk fibroin and cocoon shell, which is applied in the fields of peptide preparation, chemical instruments and methods, organic chemistry, etc., can solve the problems of silk fibroin, large amount of drug, long time required, etc., and the operation process is simple and easy. The effect of the line, the drug price is cheap, and the cost is low

Inactive Publication Date: 2002-10-30
周福康
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of this method is complicated, the time required is too long, and the sericin is not easy to remove completely, which has a certain impact on silk fibroin
[0005] 3. Hot pressing method: mainly used for degumming of castor silkworm cocoons and silk spinning. This method requires a lot of medicine and equipment investment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 1000g of shaved cocoon shells, pack them in gauze bags of 500g per bag, add 20kg of water, soak for 5 minutes, and the water temperature is 58°C; pour 20kg of soft water into the cocoon cooking pot, add 100g of sodium carbonate, and boil at 96°C for 18 Take it out after 10 minutes, wash it with hot water at 90°C, and then spin it and dehydrate it to obtain silk floss. Put silk floss in a gauze bag of 400g per bag and put it into the cocoon cooking pot, add 20kg of soft water, 90g of sodium carbonate, and 80g of soap solution, boil it at 95°C for 50 minutes, wash it once with 90°C hot water, and wash it once with 50°C warm water. Wash twice, then rinse with normal temperature water. Finally, add 0.05% acetic acid solution and soak for 5 minutes, take it out, spin and dehydrate, and obtain fibrous silk fibroin after drying.

Embodiment 2

[0030] Take 1000g of double palace cocoon shells, pack them in gauze bags of 500g each, add 20kg of water, soak for 15 minutes, and the water temperature is 50°C; pour 20kg of soft water into the cocoon cooking pot, add 110g of sodium carbonate, and boil for 26 minutes at a temperature of 95°C Finally, take it out, wash it with warm water at 50°C, and then spin it and dehydrate it to obtain silk floss. Put silk floss in a gauze bag of 300g per bag and put it into the cocoon cooking pot, add 20kg of soft water, 90g of sodium carbonate, and 80g of soap solution, boil it in 95°C water for 45 minutes, wash it once with 90°C hot water, and wash it once with 50°C warm water. Wash twice, then rinse with normal temperature water. Finally, 0.05% acetic acid solution is added to soak for 5 minutes, then taken out, spin-dried and dehydrated, and fibrous silk fibroin is obtained after drying.

Embodiment 3

[0032] Take 1000g of cocoon silk, pack it in a gauze bag of 500g per bag, put it in a cocoon cooking pot, add 20kg of soft water, 110g of sodium carbonate, and 75g of soap solution, and boil it in water at 95°C for 42 minutes; take it out and wash it with hot water at 90°C Once, washed twice with warm water at 50°C; soaked in 0.05% acetic acid solution for 5 minutes, taken out, dehydrated, and dried to obtain fibrous silk fibroin.

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PUM

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Abstract

A process for extracting the silk extract from silkworm cocoon and silk includes adding the silkworm cocoon and silk to weakly alkaline or neutral soap solution, boiling for degumming, and immersing in solution of acetic acid to obtain high-purity silk extract. Its advantages are no damage to silk extract, high purity (more than 98%), short process and low cost.

Description

technical field [0001] The invention relates to a method for extracting medicine, food and daily cosmetic raw materials, in particular to a method for extracting silk fibroin from cocoon shells and cocoon threads. Background technique [0002] Cocoon silk fiber is composed of 20-30% sericin protein and 70-80% silk fibroin protein. Silk protein is composed of 18 kinds of amino acids, but in sericin protein, it also contains 3% cocoon silk Carbohydrates, inorganic substances, waxes and pigments, while silk fibroin is the main body of cocoon silk, its protein content is very high, and it is a high-molecular protein, and its amino acid composition is very rich. It has been widely used as raw materials for medicine, food and cosmetics. At present, there are mainly the following methods for extracting silk fibroin: [0003] 1. Water boiling method: Boil in a degumming pot and keep boiling evenly for 15-20 hours. Most of the sericin can be removed, and it has a slight effect on si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07K1/14C07K2/00
Inventor 周福康
Owner 周福康
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