Abstract: After being respectively extracted from the sweet-scented osmanthus (Osmanthus fragrans) by solvent, the main components of the residue materials were compared in four species between extractions with or without enzyme hydrolysis. It was found that the contents of protein, cellulose and amino acids of the enzymolyzed samples were higher, but the contents of saccharides, flavone and ash were less. Comparing the samples with or without enzyme treatment, the oleanolic acid (OA) content in the residue with enzyme hydrolysis increased 21% higher than that without enzymolysis, which greatly improved the utilization value of the residue materials.

Key words: sweet-scented osmanthus, beta-glucosidase, concrete, essential oil, flavone, oleanolicacid