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China Surfactant Detergent & Cosmetics ›› 2017, Vol. 47 ›› Issue (4): 219-222.doi: 10.13218/j.cnki.csdc.2017.04.008

• Development and applicatio • Previous Articles     Next Articles

Inhibitory action of extracts from water lily flower on tyrosinase activity and its kinetics

LI Qian1, LI Chen-yang2, ZHAN Yu-jiao2, ABUDUREYIMU Maiwulajiang1, XU Fang2, ZHAO Jun2   

  1. 1.College of Life Sciences & Technology,Xinjiang University,Urumqi,Xinjiang 830046,China;
    2.Xinjiang Key Laboratory for Uighur Medicines,Xinjiang Institute of Materia Medic,Urumqi,Xinjiang 830004,China
  • Received:2016-12-16 Published:2019-03-20

Abstract: Tyrosinase inhibitory ratio of extracts from water lily (Nymphaea candida Presl.) flower (70% ethanol extract,NCE;30% ethanol elution parts,NCEA;50% ethanol elution parts,NCEB) were obtained based upon determination of dopa quinone with ultraviolet spectrophotometer.Furthermore,the effect of the extracts on monophenolase activity of tyrosinase and its inhibiting mechanism were examined by enzyme reaction kinetics method adopting L-tyrosine as substrate.Results show that these extracts can obviously inhibit activity of tyrosinase,of which NCEA displays the best inhibition effect as comparing with that of NCE and NCEB.The inhibition of NCEA on monophenolase activity of tyrosinase displays as reversible anti-competitive inhibition;while NCEB displays as reversible inhibition with mixed inhibition under low concentration condition,and competitive inhibition under high concentration condition.

Key words: additive for whitening cosmetics, extracts of water lily (Nymphaea candida Presl.) flower, tyrosinase, inhibition mechanism, kinetics

CLC Number: 

  • TQ658