Patent ID: 7901668
Filing Date: 2011-03-08
Classification: A61K,A61Q,B01F

Abstract:
1. A method for producing an emulsified cosmetic material having a skin cell growth-promoting property, comprising the steps of: dissolving unscoured, partially scoured or scoured spun silkworm fibers with a neutral salt in the absence of a surfactant to obtain a solution of the silkworm fibers; dialyzing the solution of silkworm fibers with water and removing substances having a molecular weight of 5,000 or lower to form an aqueous solution of silk protein mainly composed of silk fibroin having a degree of crystallization of less than 10% and an average molecular weight of between 40,000 and 370,000; drying the aqueous solution of silk protein to produce an amorphous silk substance; dissolving the amorphous silk substance in water in the absence of a surfactant to regenerate the aqueous solution of silk protein having a concentration of 0.1 to 15% and sericin proportion of 50% or lower and emulsifying an oily component with the regenerated aqueous solution of silk protein to produce the emulsified cosmetic material.