| abstract |
PURPOSE: To provide a cell-protecting agent useful as a starting material for cosmetics, comprising a flavonoid such as (-)-epigallocatechin gallate, etc., as active ingredient. n CONSTITUTION: A plant (e.g. leaves of Ginkgo biloba Linne, peel of Citrus natsudaidai Hayata, etc.) containing a flavonoid is extraction-treated with aq. ethanol. After addition of water to the extract in the same amount, the mixture is kept to give the desired cell-protecting agent containing at least one biochemically active flavonoid selected from (-)-epigallocatechin gallate, galantine and bicaleine as an active ingredient. n COPYRIGHT: (C)1991,JPO |