METHOD FOR EXTRACTING GLYCEOLLINS FOR USE IN FUNCTIONAL WHITENING PREPARATIONS

摘要

The present invention relates to a method for extracting glyceollins for use in functional whitening preparations, which method uses glyceollins extracted from beans as material for liquid, powder or ointment-type preparations and cosmetics, so as to remove freckles which are hyperpigmentation disorders causing pigment spots of light or dark brown color and which are distinctly differentiated from adjacent healthy skin, thus achieving improved skin whitening effects. Beans are immersed under water such that the volume of the wet beans is five times bigger than that of the dried beans, and wound stress is applied to the beans to induce elicitation. Then, the beans are cultured for 3 days at the temperature of 20?, and the cultured beans are dried for 4 hours at the high temperature of 110?. Subsequently, the beans are ground into powder such that the bean powder may pass through a mesh tray, and the bean powder is dissolved into ethanol of 80% to obtain pure glyceollins from the extract containing glyceollins.