Keywords Steroids;Isosteviol;Intermediates of steroid drugs;Microbial transformation;Mucor racemosus;penicillium citreo-viride;Rhizopus;Trichoderma viride;Biological activities;

• 甾体;异斯特维醇;药物中间体;生物转化;总枝状毛霉;黄绿青霉;根霉;绿色木霉;生物活性;