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China Surfactant Detergent & Cosmetics ›› 2019, Vol. 49 ›› Issue (5): 315-319.doi: 10.3969/j.issn.1001-1803.2019.05.007

• Development and application • Previous Articles     Next Articles

The effect of extract of Nepeta angustifolia C.Y.Wu on tyrosinase activity and kinetics

WANG Fei-fei1,WANG Min-zhu1,WANG Han1,HUANG Shan1,DANZENG Jiang-bai2,LI Bin1()   

  1. 1. School of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
    2. Bangor Zhuopan Health Industry Co., Ltd., Naqu, Tibet 852500, China
  • Received:2018-09-08 Revised:2019-04-30 Online:2019-05-22 Published:2019-05-24
  • Contact: Bin LI E-mail:Leebin009@163.com

Abstract:

The effect of extract of Nepeta angustifolia C.Y.Wu on tyrosine monophenolase and diphenolase activity and inhibition kinetics were studied by enzymatic reaction using L-tyrosinase and L-DOPA as substrates. Experimental results show that the extract of Nepeta angustifolia C.Y.Wu, has inhibitory effect on tyrosine monophenolase and diphenolase, and the concentrations of the extract of Nepeta angustifolia C.Y.Wu leading to 50% decrease in monophenolase and diphenolase activity(IC50)are calculated to be 0.138 8 and 0.533 2 g/L, respectively. The inhibition of tyrosine diphenolase by the extract of Nepeta angustifolia C.Y.Wu is a reversible process. The Lineweaver-Burk plots show that the type of action is competitive inhibition with an inhibition constant of 504.846 mg/L. The extract of Nepeta angustifolia C.Y.Wu has a significant inhibitory effect on tyrosinase and has the potential to be developed into a natural tyrosinase inhibitor.

Key words: cosmetic additive, extract of Nepeta angustifolia C.Y.Wu, tyrosinase, kinetics, reversible competitive inhibition

CLC Number: 

  • TQ658