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Mild amino acid type surfactant and preparation method and application thereof

A surfactant and amino acid-based technology, applied in the field of daily chemicals, can solve the problems of hard water resistance and high chroma, and achieve the effect of low equipment requirements, low chroma and high purity

Active Publication Date: 2015-03-25
广州增城潮徽生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sodium lauroyl / cocoyl sarcosinate, sodium lauroyl / cocoyl glutamate, sodium / potassium cocoyl glycinate, which are routinely used at present, all have the disadvantage of not being resistant to hard water
However, amino acid surfactants that use protein as raw materials generally have the defect of high chroma.

Method used

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  • Mild amino acid type surfactant and preparation method and application thereof
  • Mild amino acid type surfactant and preparation method and application thereof
  • Mild amino acid type surfactant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) Hydrolysis of oat protein polypeptide: Dissolve 30 g of oat protein polypeptide with an average molecular weight of 2000 Daltons in 100 mL of water, add 0.15 g of alkaline protease (Novozymes, 2 million units / g), and dissolve in a water bath at 45 °C to Stir at a speed of 50rpm for 3h; then adjust the pH value to 1.5 with 6mol / L hydrochloric acid, and stir at a speed of 100rpm for 3h in an 80°C water bath, during which the pH value of the system should not be higher than 2.5. Cool to room temperature, add 3g of activated carbon, stir at a speed of 50rpm for 30min, remove the activated carbon by filtration, and obtain about 125g of oat amino acid compound solution. The main component of the compound solution is a mixture of oat amino acid and oat oligopeptide. %.

[0064] Oat amino acids are mainly lysine, threonine, methionine, phenylalanine, leucine, isoleucine, valine and other amino acids, and their composition and content are determined by oat protein. For the ...

Embodiment 2

[0068] (1) Hydrolysis of oat protein polypeptide: Dissolve 35 g of oat protein polypeptide with an average molecular weight of 2450 Daltons in 120 mL of water, add 0.3 g of papain (Shanghai Jingchun, 3.5 million units / g), and heat it in a 48°C water bath at 75rpm Stir at a speed of 4 h; then adjust the pH value to 1.8 with 6 mol / L hydrochloric acid, and stir at a speed of 120 rpm for 4 h in an 85°C water bath, during which the pH value of the system is maintained not higher than 2.5. Cool to room temperature, add 4g of activated carbon, stir at a speed of 80rpm for 40min, remove the activated carbon by filtration, and obtain about 150g of oat amino acid compound solution. The main component of the compound solution is a mixture of oat amino acid and oat oligopeptide. %.

[0069] (2) Acylation of oat amino acids and oat oligopeptides: the mixture of oat amino acids and oat oligopeptides obtained in step (1) is cooled to 6°C; 0.6g catalyst ammonium p-toluenesulfonate is added, s...

Embodiment 3

[0072] (1) Hydrolysis of oat protein polypeptide: Dissolve 40 g of oat protein polypeptide with an average molecular weight of 3000 Daltons in 150 mL of water, add 0.25 g of neutral protease (Novozymes, 2 million units / g) and 0.25 g of alkaline protease ( Novozymes), stirred at a speed of 100rpm in a 50°C water bath for 6h; then adjusted the pH value to 2.0 with 6mol / L hydrochloric acid, and stirred at a speed of 150rpm in a water bath at 85°C for 6h, during which the pH value of the system was maintained not higher than 2.5. Cool to room temperature, add 3.5g of activated carbon, stir at a speed of 80rpm for 45min, remove the activated carbon by filtration, and obtain about 185g of oat amino acid compound solution, the main component of the compound solution is a mixture of oat amino acid and oat oligopeptide, and the degree of hydrolysis of oat protein polypeptide is 90%.

[0073] (2) Acylation of oat amino acids and oat oligopeptides: the mixture of oat amino acids and oat...

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Abstract

The invention discloses a mild amino acid type surfactant and a preparation method and an application thereof. The preparation method disclosed by the invention comprises the following steps: hydrolyzing oat protein polypeptide by using an enzyme, adsorbing with activated carbon and then reacting with acyl chloride to obtain a mixed solution of acylated oat amino acid sodium salt; finally, reducing the pH value, regulating the pH value to 6.0, filtering, removing the filter residues and retaining filtrate; continuing to reduce the pH value of the filtrate, collecting the obtained precipitate and washing the precipitate; uniformly mixing the precipitate with water, and reacting the precipitate with a neutralizer to obtain the mild amino acid type surfactant. The surfactant is high in purity and low in chromaticity, an acylated oat amino acid surfactant with active matter content larger than 30% can be obtained, and the form of the surfactant is still mobile liquid, so that the surfactant is conveniently added in the formula and is convenient to use; the surfactant is mild and is particularly suitable for the preparation of personal care products, and even toiletries for children.

Description

technical field [0001] The invention relates to the technical field of daily chemicals, in particular to a mild amino acid surfactant and its preparation method and application. Background technique [0002] As people pay more and more attention to the safety, mildness and environmental protection requirements of various products, the research and development of multifunctional and high-quality environmentally friendly surfactants has become the main direction of the surfactant industry. Environmentally friendly surfactants include biosurfactants and bio-based surfactants. The former refers to amphiphilic compounds with surfactant characteristics such as glycolipids, polyglycolipids, peptide lipids, neutral lipid derivatives, etc. produced by various microorganisms such as bacteria, yeast, and fungi; while the latter is based on biosurfactants. Synthetic amphoteric compounds based on natural structures can be synthesized by biotechnological or chemical methods using renewab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P21/00C12P21/06C12P13/02B01F17/30A61K8/64A61K8/44A61Q19/10C09K23/30
Inventor 郑华生张鹏谢培镇陈文珊杨敏程建华
Owner 广州增城潮徽生物技术有限公司
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