Sun Su-qin, Zhou Qun, Leung Hei-wun, Yeung Hin-wing
Department of Chemistry, Tsinghua University, Beijing 100084, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2002 Aug;22(4):600-2.
A rapid and non-destructive method, was used to identify seven commercial American Ginseng Tea bags by Fourier-transform infrared spectroscopy (FTIR) in this paper. It could be seen from the results, that each sample has its own characteristic infrared spectrum. Also, the seven tea bags could be divided into two groups: one is made from pure Ginseng powders, and the other is made by Ginseng extractives and additives. The information of additives used by factories could be identified by IR spectra. For example, some factories use glucose, and the others use sucrose as the additives. Furthermore, the quality of the tea bags was identified by the intensity ratio of Ginsengs and additives. In HPLC, the total saponin in tea bags made from Ginseng powders is 4 times higher than that made by Ginseng extractives. Therefore, HPLC analysis gave the same result with FTIR. It is proved that FTIR is a very fast, simple and reliable method to identify Chinese medicine.
本文采用一种快速无损的方法，通过傅里叶变换红外光谱（FTIR）对7种市售西洋参茶包进行鉴别。从结果可以看出，每个样品都有其独特的红外光谱。此外，这7种茶包可分为两组：一组由纯参粉制成，另一组由人参提取物和添加剂制成。工厂使用的添加剂信息可通过红外光谱鉴别。例如，一些工厂使用葡萄糖，另一些工厂使用蔗糖作为添加剂。此外，通过人参和添加剂的强度比来鉴别茶包的质量。在高效液相色谱法中，由参粉制成的茶包中总皂苷含量比由人参提取物制成的茶包高4倍。因此，高效液相色谱分析与傅里叶变换红外光谱法得到的结果相同。证明傅里叶变换红外光谱法是一种非常快速、简单且可靠的中药鉴别方法。
