title: [Colorimetric method for the determination of hecogenin in Agave americana L. residue].
mesh_terms: D002681:China; D003124:Colorimetry; D010946:Plants, Medicinal / Q000032:analysis*; D012502:Sapogenins / Q000032:analysis*
chemical_list: D012502:Sapogenins; C007908:hecogenin