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Wool keratin extraction method

A wool keratin and extraction method technology, applied in the direction of keratin, cytokeratin, peptide preparation methods, etc., can solve the problems of poor thermal stability, low crystallinity, poor accessibility, etc., and achieve small environmental impact and large molecular weight , the effect of less damage to wool

Active Publication Date: 2016-03-16
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Peroxy acid is highly corrosive and poor in accessibility. Although hydrogen peroxide is cheap, it reacts violently and is extremely easy to hydrolyze
The wool keratin polypeptide with molecular weight less than 2kD obtained by enzymatic method has low crystallinity and relatively poor thermal stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of extraction method of wool keratin described in the present embodiment, comprises the following steps:

[0022] (1) Tear the wool loose, add the compound ionic liquid, the specific gravity of the wool and the compound ionic liquid is 1g:10ml. The compound ionic liquid is composed of chlorinated 1-enbutyl-3-methylimidazole and 1-ethyl-3-methylimidazole acetate, and the mixing ratio is 6 parts by weight of chlorinated 1-enyl-3-methylimidazole. Mix 3-methylimidazole with 1 part by weight of 1-ethyl-3-methylimidazole acetate; heat to 80°C under vacuum, with stirring, and heat for 4 hours until it completely dissolves into a beige liquid, and no white can be observed of wool.

[0023] (2) Put the wool lysate treated in step (1) into the liquid-separating funnel, add 10ml of buffer solution, and the buffer solution configuration is to get 1 part by weight of 0.2mol / l dipotassium hydrogen phosphate solution and 3 parts by weight of Mix 0.1mol / l citric acid and add t...

Embodiment 2

[0028] (1) Tear the wool loose, add the compound ionic liquid, the specific gravity of the wool and the compound ionic liquid is 1g:10ml. The compound ionic liquid is composed of chlorinated 1-enbutyl-3-methylimidazole and 1-ethyl-3-methylimidazole acetate, and the mixing ratio is 6 parts by weight of chlorinated 1-enyl-3-methylimidazole. Mix 3-methylimidazole with 1 part by weight of 1-ethyl-3-methylimidazole acetate; heat to 90°C under vacuum, with stirring, and heat for 4 hours until it completely dissolves into a beige liquid, and no white is observed of wool.

[0029] (2) Put the wool lysate treated in step (1) into the liquid-separating funnel, add 10ml of buffer solution, and the buffer solution configuration is to get 2 parts by weight of 0.2mol / l dipotassium hydrogen phosphate solution and 4 parts by weight of Mix 0.1 mol / l citric acid and add the rest of deionized water, the pH of the buffer solution after the two are mixed is 3.94, after adding the buffer solution,...

Embodiment 3

[0034] A kind of extraction method of wool keratin described in the present embodiment, comprises the following steps:

[0035] (1) Tear the wool loose, add the compound ionic liquid, the specific gravity of the wool and the compound ionic liquid is 1g:10ml. The compound ionic liquid is composed of chlorinated 1-enbutyl-3-methylimidazole and 1-ethyl-3-methylimidazole acetate, and the mixing ratio is 8 parts by weight of chlorinated 1-enyl-3-methylimidazole. Mix 3-methylimidazole with 4 parts by weight of 1-ethyl-3-methylimidazole acetate; heat to 100°C under vacuum, with stirring, and heat for 4 hours until it completely dissolves into a beige liquid, and no white is observed of wool.

[0036] (2) Put the wool lysate treated in step (1) into the liquid-separating funnel, add 10ml of buffer solution, and the buffer solution configuration is to get 2 parts by weight of 0.2mol / l dipotassium hydrogen phosphate solution and 4 parts by weight of Mix 0.1mol / l citric acid and add th...

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PUM

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Abstract

The invention relates to a wool keratin extraction method. The method comprises the following steps: 1, immersing wool in a compounded ionic liquid, adding loose wool to the compounded ionic liquid, and heating the ionic liquid under vacuum conditions to 80-100DEG C for 2h while stirring until the wool is dissolved to form a beige liquid; 2, adding the treated liquid obtained in step 2 to a buffer solution; 3, centrifuging the treated solution obtained in step 2 to obtain wool keratins; and 4, adding the buffer solution to a centrifuged liquid obtained in step 3, circulating the step 2 and the step 3, repeatedly extracting 4-10 times, and mixing all the separated wool keratins.

Description

technical field [0001] The invention belongs to the technical field of recycling keratin from waste textiles, and more specifically relates to a method for extracting wool keratin. Background technique [0002] my country is the second largest wool producing country in the world. In recent years, wool production has been increasing, reaching nearly 400,000 tons. Similarly, due to poor quality, waste and process loss, more than 100,000 tons of wool resources are discarded every year. And not fully utilized, and the content of keratin in the wool fiber is as high as more than 80%. Wool keratin is basically distributed in the outer layer and fibrils of wool scales. It is relatively pure and is a keratin resource with high practical value. With the in-depth research on the recycling and utilization of various waste resources and the research on the value-enhancing technology of wool by people in the textile industry in recent years, people's research on the utilization of waste ...

Claims

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Application Information

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IPC IPC(8): C07K14/47C07K1/14
CPCC07K14/4741
Inventor 夏双双徐荣马辉沈加加
Owner JIAXING UNIV
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