title: Acid hydrolysis of crude tannins from infructescence of Platycarya strobilacea Sieb. et Zucc to produce ellagic acid.
abstract: The infructescence of Platycarya strobilacea Sieb. et Zucc is a well-known traditional medicine in China, Japan and Korea. The infructescence of P. strobilacea Sieb. et Zucc is a rich source of ellagitannins that are composed of ellagic acid (EA) and gallic acid, linked to a sugar moiety. The aim of this study was to prepare EA by acid hydrolysis of crude tannins from the infructescence of P. strobilacea Sieb. et Zucc, and establish a new technological processing method for EA. The natural antioxidant EA was prepared by using the water extraction of infructescence of P. strobilacea Sieb. et Zucc, evaporation, condensation, acid hydrolysis and prepared by the process of crystallisation. The yield percentage of EA from crude EA was more than 20% and the purity of the product was more than 98%, as identified by using HPLC. The structure was identified on the basis of spectroscopic analysis and comparison with authentic compound.
authors.affiliation: a Institute of Chemical Industry of Forest Products, CAF , Nanjing 210042 , Jiangsu Province P.R. China.
authors.forename: Liangliang
authors.initials: L
authors.lastname: Zhang
authors.forename: Yongmei
authors.initials: Y
authors.lastname: Wang
authors.forename: Man
authors.initials: M
authors.lastname: Xu
mesh_terms: D002851:Chromatography, High Pressure Liquid; D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D004610:Ellagic Acid / Q000138:chemical synthesis / Q000737:chemistry*; D005707:Gallic Acid / Q000737:chemistry; D006868:Hydrolysis; D047348:Hydrolyzable Tannins / Q000737:chemistry / Q000302:isolation & purification*; D029525:Juglandaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D013634:Tannins / Q000737:chemistry*
chemical_list: D004365:Drugs, Chinese Herbal; D047348:Hydrolyzable Tannins; D013634:Tannins; D004610:Ellagic Acid; D005707:Gallic Acid
keywords: Platycarya strobilacea; ellagic acid; ellagitannins; tannins