摘要:
Disclosed is a method for preparing polysaccharides of green tea, and more particularly to a method for preparing polysaccharides of green tea comprising the steps of: a) removing chlorophyll and a low molecular weight polyphenol from green tea powder using a solvent; b) hot-water extracting a water-soluble active ingredient from the green tea residue of step a); and c) separating the polysaccharides of green tea from the hot-water extract of step b) by ultrafiltration and ethanol precipitation. Also, the present invention relates to a cosmetic composition for skin whitening, moisturization and anti-wrinkle effects comprising the polysaccharides of green tea as an effective ingredient.
摘要:
The present invention relates to a method for screening skin aging-specific genes and a method for screening anti-aging materials by controlling the expression of the genes. The invention can provide a new material having an effect on the prevention of skin aging and the treatment of skin diseases by obtaining new target genes related to skin aging and controlling the expression of the genes.
摘要:
Disclosed herein are an external composition for skin, which contains, as an active ingredient, manassantin B extracted from Saururus chinensis Baill, and the use thereof for skin whitening. More particularly, disclosed are an external composition for skin, which contains, as an active ingredient, manassantin B, which inhibits the transfer of melanosomes, thus providing a skin-whitening effect without influencing the melanin synthesis function of the melanocytes, ad well as the use thereof for skin whitening.