Zuo Kang, Li Dan-ting, Guo Shui-liang, Chen Jian-hua
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2007 Oct;27(10):1989-92.
Polygonum cuspidatum Sieb. et Zucc. is an important Chinese traditional medicine, and has wide distribution in China. Based on their infrared fingerprint spectra, Polygonum cuspidatum root samples from 7 geographical origins could be divided into 6 classes with principal component analysis. The classification was well correlated to their geographical origins and weather. In the same class, the chemical components of P. cuspidatum are similar to each other, which can be considered as the criterion for evaluating the quality of P. cuspidatum. The results showed that their characteristic infrared spectra were similar in the range of 4000-1700 cm(-1), but varied significantly for different groups and kinds of P. cuspidatum samples in the range of 1700-900 cm(-1). The method is rapid and simple, and could be applied to evaluate the quality of this traditional Chinese medicine. It is one of the methods in the quality control of traditional Chinese medicines.
虎杖是一种重要的中药材，在中国分布广泛。基于其红外指纹图谱，运用主成分分析法可将来自7个地理产地的虎杖根样本分为6类。这种分类与它们的地理产地和气候密切相关。在同一类别中，虎杖的化学成分彼此相似，这可作为评价虎杖质量的标准。结果表明，它们的特征红外光谱在4000 - 1700 cm(-1)范围内相似，但在1700 - 900 cm(-1)范围内，不同组和不同种类的虎杖样本差异显著。该方法快速简便，可用于评价这种中药材的质量。它是中药质量控制的方法之一。
