Zhang Jing-Chao, Zhu Yan-Ying, Ding Xi-Feng, Liu Mei-Yi, Guo Xi-Hua, Wu Peng-Le, Guan Ying
College of Sciences, Yanshan University, Qinhuangdao 066004, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2012 Jul;32(7):1972-4.
The contents of various elements in rhizoma dioscoreae were analyzed and compared with those of shishou D. opposita Thunb on the whole jointly by XRF and PXRD. The results showed that the element Cu, Al and Mn could not be detected in rhizoma dioscoreae, but the element Mg, Zn and Cr were found, and other elements contents changed to different degrees; there are starch and whewellite in both groups, the crystal type of starches separated from rhizoma dioscoreae cultivars was a typical B-type pattern, but as C-type and V-type in shishou D. opposita Thunb, which is a mixture of A-type, B-type and V-type. The combination of two testing techniques could be applied to the mensuration and analysis of the elements and micro-structural of Dioscorea opposita Thunb which could be from different producing areas.
采用X射线荧光光谱法（XRF）和粉末X射线衍射法（PXRD）对山药中各元素的含量进行了分析，并与石首山药进行了整体比较。结果表明，山药中未检测到元素铜、铝和锰，但检测到了元素镁、锌和铬，其他元素含量也有不同程度的变化；两组均含有淀粉和草酸钙，从山药品种中分离出的淀粉晶型为典型的B型，而石首山药中的淀粉晶型为C型和V型，是A型、B型和V型的混合。两种检测技术的结合可用于对不同产地山药的元素和微观结构进行测定和分析。
