title: [Determination of berberine in Phellodendron chinense Schneid and its processed products by TLC (thin layer chromatography) densitometry].
abstract: Berberine from crude and processed Phellodendron chinense was determined by UV TLC densitometry. The results indicate that the content of berberine in processed products is 11.8% to 98% less than that of the crude drug. The recovery of berberine is 98% +/- 1.7% and the Standard relative deviation is 1.7%.
authors.affiliation: Sichuan Institute of Chinese Materia Medica, Chongqing.
authors.forename: H
authors.initials: H
authors.lastname: Zhou
authors.forename: Y
authors.initials: Y
authors.lastname: Gu
mesh_terms: D001599:Berberine / Q000032:analysis*; D002855:Chromatography, Thin Layer; D003720:Densitometry; D004356:Drug Storage; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D006358:Hot Temperature
chemical_list: D004365:Drugs, Chinese Herbal; D001599:Berberine