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Fritillaria is a traditional Chinese herbal medicine for anti-tussive and expectorant use in&#13; China and some other Asian countries. The Fritillaria Chinese medicine material derived from&#13; different geographical origins is always difficult to discriminate each other. The objective of the study&#13; is to develop a nondestructive and simple method to identify five Fritillaria Chinese materia medica&#13; such as Fritillaria thunbergii Miq., Fritillaria ussurensis Maxim., Fritillaria cirrhosa D.Don,&#13; Fritillaria pallidifloca Schrenk and Fritillaria hupehensis Hsiao et KC Hsia. X-ray diffraction was&#13; utilized to analyze the discrepancy of the Fritillaria from different geographical origins. Because&#13; Fritillaria consists of plenty of starch, which is a very good semicrystalline macromolecule, the X-Ray&#13; diffraction spectra of Fritillaria powders mainly showed the crystalline properties of starch. The&#13; differences in starches crystallinite could be distinguished by X-ray diffraction spectra. X-ray&#13; diffraction is proved to be a new and powerful method to discriminate Fritillaria from different&#13; geographical origins

Use of X-Ray Diffractometry (XRD) for Identification of <i>Fritillaria</i> According to Geographical Origin