植物学报2012，Vol.47Issue(3)：278-285,8.DOI:10.3724/SP.J.1259.2012.00278
粉末X射线衍射图谱计算植物淀粉结晶度方法的探讨
Methods for Determining Relative Crystallinity of Plant Starch X-ray Powder Diffraction Spectra
摘要
Abstract
Plant starches have A-, B-, and C-type crystallinity. We investigated spectrum characteristics of starches from rice, potato, pea and lotus by X-ray powder diffraction (XRO). Peak-fitting, curved-line, straight-line mapping and curved-line mapping methods are commonly used for determining relative crystallinity of starch XRD spectra. The curved-line mapping method has reliable results. We found the relative crystallinity of rice starch negatively associated with amylose content and that of acid-modified lotus starches positively associated with acid hydrolysis degree by the curved-line mapping method. The crystallinity of lotus starch changed from C- to A-type during acid hydrolysis. These results would be useful for XRD analysis of crystallinity and relative crystallinity of plant starches.关键词
结晶度/植物淀粉/粉末X-射线衍射Key words
crystallinity/ plant starch/ X-ray powder diffraction引用本文复制引用
徐斌,满建民,韦存虚..粉末X射线衍射图谱计算植物淀粉结晶度方法的探讨[J].植物学报,2012,47(3):278-285,8.基金项目
国家自然科学基金(No.31071342)、扬州大学科技创新培育基金(No.2011CXJ080)和江苏省作物学优势学科项目 （No.31071342）
