Inhibition of Mushroom-tyrosinase by Aloe Extract

Overview

Journal Planta Med

Specialty Biology

Date 1987 Dec 1

PMID 17269093

Citations 22

Authors

A Yagi

T Kanbara

N Morinobu

Affiliations

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Abstract

Inhibition by ALOE extracts of L-dopa oxidation by mushroom-tyrosinase was examined. 2''- O-Feruloylaloesin and aloesin at concentrations of 0.4 microM showed inhibition of 27 and 30%, respectively. Lineweaver-Burk plots of the concentration of L-dopa in the absence and presence of 2''- O-feruloylaloesin, 0.4 and 0.8 microM, showed that this compound inhibits mushroom-tyrosinase noncompetitively. The K (i) value obtained was 8.5 x 10 (-5) M. 2''- O-Feruloylaloesin and aloesin contents were analyzed by a reversed-phase HPLC, and their seasonal variations were observed.

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