Enhancement of the Tyrosinase Inhibitory Activity of Mori Cortex Radicis Extract by Biotransformation UsingLeuconostoc paramesenteroidesPR
摘要:
Mori Cortex Radicis (MCR), the root bark of Morus alba L., consists of various phytochemicals and exhibits a strong inhibitory effect on tyrosinase. To enhance the tyrosinase inhibitory activity of MCR extract without further purification of bioactive compounds, whole MCR extract was biotransformed with crude enzyme extract from a selected lactic acid bacterium, Leuconostoc paramesenteroides PR (LP). Mulberroside A (MA), a major stilbene glucoside of MCR, contains two beta-glucosyl residues at the C3 and C4' positions of oxyresveratrol (OXY). The crude enzyme of LP hydrolyzed the two glycosidic bonds of MA effectively, and 97.1% of MA was biotransformed into OXY within 2 h. Commercial almond beta-glucosidase hydrolyzed only one site of the two glycosidic bonds of MA, and 68.7% of MA was biotransformed to OXY-glucoside. The tyrosinase inhibitory activity of the crude extract of MCR was increased approximately 6.5-fold by biotransformation using LP, and the IC50 value of the transformed MCR was 3.7 mu g/mL.
[EN] COMPOSITION COMPRISING A MORUS ALBA EXTRACT, AND ITS COSMETIC USES<br/>[FR] COMPOSITION COMPRENANT UN EXTRAIT DE MORUS ALBA ET SES UTILISATIONS COSMÉTIQUES
申请人:OREAL
公开号:WO2020201432A1
公开(公告)日:2020-10-08
The present invention relates to a composition comprising, in a physiologically acceptable medium, at least mulberroside A and mulberroside E. It also relates to cosmetic uses of said composition, especially for depigmenting, lightening and/or bleaching keratin materials, in particular the skin.