A method for high extraction of oleanolic acid and ursolic acid from Eriobotrya Leaf using supercritical fluid extraction

摘要

PURPOSE: A method for extracting oleanolic acid and ursolic acid derived from Eriobotrya japonica leaves by supercritical extraction is provided to extract oleanolic acid and ursolic acid with high efficiency. CONSTITUTION: A method for extracting oleanolic acid and ursolic acid from Eriobotrya japonica leaves comprises: a step of drying Eriobotrya japonica leaves by cold wind; a step of pulverizing the dried Eriobotrya japonica leaves at a particle size of 0.2-2 mm; and a step of extracting the pulverized Eriobotrya japonica leaves at 40-50 deg.C. and 150-250 bar using supercritical carbon dioxide.