Extraction of diosgenin from Dioscorea zingiberensis through stepwise biocatalysis Lipase-catalyzed construction of glucose-modified brain targeting liposomes with paclitaxel and research on its optimized preparation process Study on hydrolysis of baicalin into baicalein by immobilized β-glucosidase in a two-phase system Application of Auto-induction System in the Synthesis of 2’-deoxycytidine