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Method for removing squame from marine low-temperature metalloproteinase (MP) hydrolysis hairwork

A low-temperature protease and hair product technology, applied in textiles and papermaking, biochemical fiber treatment, fiber treatment, etc., can solve the problem that the tensile strength, moisture retention and anti-ultraviolet oxidation performance of color hair products are reduced, the degree of hydrolysis is difficult to control, and the color is affected. Issues such as quality and grade of finished products

Active Publication Date: 2013-10-30
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the hair product manufacturing industry has adopted the concentrated acid method for descaling hair products for many years, but there are many disadvantages in acid hydrolysis, such as: the degree of hydrolysis is difficult to control, and black insoluble deposits are formed after cystine and tryptophan are destroyed The surface of the hair, accompanied by the generation of stench, seriously pollutes the environment, and the tensile strength, moisture retention and anti-ultraviolet oxidation performance of the finished color hair product are greatly reduced, which seriously affects the product quality and grade of the finished color hair product, and the qualified rate of product quality is less than 50%.
It is known that keratinase is the most effective commercial hydrolytic enzyme for human hair keratin, but the test results show that keratinase has no satisfactory action specificity on human hair surface squamous layer, and it is easy to completely hydrolyze it into oligopeptides and aromatics. free amino acids, and cannot be practically used

Method used

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  • Method for removing squame from marine low-temperature metalloproteinase (MP) hydrolysis hairwork
  • Method for removing squame from marine low-temperature metalloproteinase (MP) hydrolysis hairwork

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Prepare 0.2% by mass of calcium chloride, 500L of borax buffer solution with pH 9, add 15g of marine low-temperature protease MP (product sold in the Yellow Sea), 500ml of penetrant fatty alcohol polyoxyethylene ether, add the hair products washed and dried in water after mixing 5 kg, after 8 hours of treatment at 25°C, remove the hair product, wash it and dry it in the air.

[0017] In the above-mentioned dried enzymatically treated hair products, 50 hairs were randomly selected for hair strength measurement, the average tensile strength reached 140.8g, and the average hair sun protection factor reached more than 10.7.

[0018] Comparison of tensile strength after enzymatic and acid descaling: listed in Table 1

[0019]

[0020] Experiments have proved that enzymatic descaling can increase the elasticity of hair, which can be intuitively reflected from the hair elasticity test (see the table above), and it can be seen from Table 1 that the tensile strength can be in...

Embodiment 2

[0028] Prepare 0.3% by mass calcium chloride, 500L of borax buffer solution with pH 9, add 20g of marine low-temperature protease MP, 500ml of penetrant fatty alcohol polyoxyethylene ether, mix well, add 5kg of washed and dried hair products, and treat at 25°C After 8 hours, remove the hair product and wash it with water to dry.

[0029] In the above-mentioned dried enzymatically treated hair products, 50 hairs were randomly selected for hair strength measurement, the average tensile strength reached 140.3g, and the average hair sun protection factor reached more than 10.2.

Embodiment 3

[0031] Prepare 0.25% by mass of calcium chloride, 500L of borax buffer solution with pH 9.5, add 17g of marine cryogenic protease MP, 500ml of penetrant fatty alcohol polyoxyethylene ether, mix well, add 5kg of hair products washed and dried in water, and treat at 25°C After 9 hours, remove the hair product and wash it with water to dry.

[0032] In the above-mentioned dried enzymatically treated hair products, 50 hairs were randomly selected for hair strength measurement, the average tensile strength reached 141.5 g, and the average hair sun protection factor reached more than 11.1.

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Abstract

The invention relates to a method for removing squame from marine low-temperature metalloproteinase (MP) hydrolysis hairwork. The method is characterized in that 2-5% (mass percentage of enzyme to hairwork) of marine low-temperature metalloproteinase is used at 20-35 DEG C, the pH is 7-10, 0.2-1.0 mass percent of alkyl polyoxyethylene ether serving as penetrating agent is added, the squame removal by using an enzymic method is carried out for 7-9 hours, the average stretching resistance strength of human hair subjected to marine low-temperature metalloproteinase enzymic method squame removal reaches 140.8g, and the sun protection factor of the hair reaches above 10.7. The method is simple in process, has a good effect, can be used for improving the quality and the grade of hair products and is a more effective enzymic method treatment technology for removing the squame from the hairwork in comparison with an acid process squame removal method.

Description

technical field [0001] The invention relates to the field of hair product processing, in particular to a method for descaling hair products by hydrolyzing marine low-temperature protease MP. Background technique [0002] The development history of my country's human hair products industry originated in the 1950s, and has now become a relatively unique traditional export project in China. As a labor-intensive industry, it has made positive contributions to increasing the employment rate of urban and rural labor. According to customs statistics, the total import and export volume of hair products in my country in 2010 was 2.116 billion US dollars, an increase of 21.9% compared with the same period in 2009. As we all know, to produce hair products for European and American markets using oriental human hair as materials, it is necessary to first destroy the surface scale layer to make it soft enough, and then remove melanin by oxidation means to produce excellent hair products. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M16/00D06M11/155D06M15/53D06M101/12
Inventor 郝建华王跃军孙谧刘均忠
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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