title: [A comparative study on chemical constituents in different processed products of Dioscorea opposita].
abstract: The quantitative comparisons of Water-soluble extract, alcohol-soluble extract and allantoin in crude and three processed products of Dioscorea opposita is carried out by the method recorded in Pharmacopoeia and TLCS respectively. As a result, the changes of water-soluble extract and alcohol-soluble extract during the four samples are similar. It is the hightest in the processed product stir-fried with soil and lowest in the crude. But for allantoin, it is the highest in the processed product stir-fried with wheat bran and lowest in that stir-fried with no material. It is suggested that the contents between water-soluble extract, alcohol-soluble extract and allantoin are not interrelated. It shall be considered to increase the content of allantoin as a quality control index to control the quality of the processed products.
authors.affiliation: Beijing University of Traditional Chinese Medicine, Beijing 100029.
authors.forename: B
authors.initials: B
authors.lastname: Liu
authors.forename: X
authors.initials: X
authors.lastname: Ma
authors.forename: F
authors.initials: F
authors.lastname: Li
mesh_terms: D000481:Allantoin / Q000032:analysis*; D027742:Dioscorea / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000302:isolation & purification*; D000431:Ethanol; D013678:Technology, Pharmaceutical / Q000379:methods; D014867:Water
chemical_list: D004365:Drugs, Chinese Herbal; D014867:Water; D000481:Allantoin; D000431:Ethanol