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China Surfactant Detergent & Cosmetics ›› 2021, Vol. 51 ›› Issue (11): 1109-1117.doi: 10.3969/j.issn.1001-1803.2021.11.011

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Influencing factors on washing performance of alkaline protease in liquid detergent

Wang Penghui1,Wang Weixian1,2,Yang Tao1,Zeng Hui1,2,*(),Rui Zebao1,*(),Li Donghua3,Huang Ping3   

  1. 1. School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, Guangdong 519082, China
    2. GDAMB R&D center, Sun Yat-sen University, Foshan, Guangdong 528244, China
    3. Guangdong Youkai Technology Co., Ltd., Foshan, Guangdong 528244, China
  • Received:2021-03-23 Revised:2021-10-29 Online:2021-11-22 Published:2021-11-19
  • Contact: Hui Zeng,Zebao Rui E-mail:zenghui5@mail.sysu.edu.cn;ruizebao@mail.sysu.edu.cn

Abstract:

Alkaline protease is one of the most widely used enzymes in liquid detergents. It has a wide range of peptide bond hydrolysis selectivity and can degrade a variety of protein souls. However, unlike the biological environment, various inactivation factors in the harsh liquid detergent environment may lead to the denaturation, performance degradation and cost increase of alkaline protease. Understanding these influencing factors in the complex liquid protease environment is necessary for further improving the washing performance of alkaline protease. This paper firstly addresses the main inactivation factors of alkaline protease in liquid detergent, such as autolysis inactivation and the effect of chelating agent, bleaching agent and surfactant. Special attention is paid to the interaction between surfactant and alkaline protease. Finally, the development of surfactant types and compounding technology in liquid detergent formulation in the future is prospected.

Key words: alkaline protease, chelating agent, bleaching agent, surfactant, liquid laundry detergent, denaturation and inactivation

CLC Number: 

  • TQ649