The Crystalline Changes of Starch from Rhizoma Dioscorea by Acid Hydrolysis

作     者：Shu Jun WANG Wen Yuan GAO Jing Lin YU Pei Gen XIAO 

作者机构：College of Pharmaceuticals and Biotechnology Tianjin University Tianjin 300072 School of Science Tianjin University Tianjin 300072 Institute of Medicinal Plant Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100094 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2006年第17卷第9期

页      面：1255-1258页

核心收录：

学科分类：1008[医学-中药学(可授医学、理学学位)] 1006[医学-中西医结合] 0703[理学-化学] 100602[医学-中西医结合临床] 10[医学] 

主　　题：Rhizoma Dioscorea starch crystalline acid hydrolysis X-ray diffraction. 

摘      要：The changes in crystalline properties of starch from Rhizoma Dioscorea by acid hydrolysis was characterized by X-Ray diffractometry （XRD）. The results revealed that the crystalline type of Rhizoma Dioscorea starch changed from C-type to A-type after 16 days of the acid hydrolysis. This phenomenon was different from that of other starches subjected to the acid hydrolysis. The results revealed that the B-polymorphs of C-type starch constituted the amorphous regions while the crystalline areas were mainly composed of A-polymorphs. The degree of crystallinity of the acid-thinned starch increased gradually with the time of acid hydrolysis.