METHOD FOR PREPARING MULBERRY LEAF EXTRACT WITH IMPROVED HYDROPHOBICITY

摘要

A method for preparing the extract of mulberry leaf is provided to improve skin absorption of mulberry leaf extract by increasing its hydrophobicity property and reduce its particle size through degradation of sugar residues in the extract with an enzyme, so that the mulberry leaf extract is useful in cosmetics. A method for preparing the extract of mulberry leaf with improved hydrophobicity comprises the steps of: (a) extracting mulberry leaf with 5-30%(v/v) of ethanol and reacting the extract of mulberry leaf with 0.1-0.5%(w/w) based on the weight of mulberry leaf of beta-glucosidase; and (b) adding 50-60%(v/v) of acetone into the enzyme reaction product, and membrane filtering or centrifuging the mixture to obtained a soluble extract fraction.