title: [Constituents of Geranium thunbergii Sieb. et Zucc. VI. Difference of tannin activity caused by structural differences. (2). Colorimetry with methylene blue (author's transl)].
mesh_terms: D003124:Colorimetry; D008751:Methylene Blue; D010946:Plants, Medicinal / Q000032:analysis; D013634:Tannins / Q000032:analysis*
chemical_list: D013634:Tannins; D008751:Methylene Blue