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Yagi, A. et al.

Inhibition of mushroom-tyrosinase by aloe extract.

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.[1]

References

Inhibition of mushroom-tyrosinase by aloe extract. Yagi, A., Kanbara, T., Morinobu, N. Planta Med. (1987) [Pubmed]

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