文献类型： 外文期刊

作者： Yang Ni-na ¹ ; Yang Chun-yong ³ ; Wang Yuan-zhong ⁴ ; Zhao Ying-hong ¹ ;

作者机构： 1.Dai Hosp Xishuangbanna Dai Autonomous Prefecture, Xishuangbanna 666100, Peoples R China

2.Yunnan Univ TCM, Coll TCM, Kunming 650500, Peoples R China

3.Chinese Acad Med Sci, Yunnan Branch, Inst Med Plant Dev, Xishuangbanna 666100, Peoples R China

4.Yunnan Acad Agr Sci, Inst Med Plants, Kunming 650200, Peoples R China

5.Yunnan Tech Ctr Qual Chinese Mat Med, Kunming 650200, Peoples R China

关键词： FTIR fingerprint;Dai medicine;Alstonia scholaris (L.) R. Br.;Picrinine;Ursolic acid;Oleanolic acid;Quality control

期刊名称：SPECTROSCOPY AND SPECTRAL ANALYSIS （ 影响因子：0.589； 五年影响因子：0.504 ）

ISSN： 1000-0593

年卷期： 2017 年 37 卷 1 期

页码：

收录情况： SCI

摘要： FTIR fingerprint of the leaves and immature stems of Alstonia scholaris (L.) R. Br. was established as a content determination method for the detection of picrinine, ursolic acid and oleanolic acid. Different medicinal parts were identified based on principal component analysis, while exploring the influence of immature stems for the leaves and the application of FTIR and HPLC in the Dai quality control in order to speed up the pace of Dai medicine modernization. Infrared spectroscopy of different batches samples were collected and the data was preprocessed as to automatic baseline correction, smooth, ordinate normalization, second order derivative, and then to PCA, all the datum in triplicate. For content determination of picrinine, mobile phase was acetonitrile (40) water (contain 0.1% ammonia water) (60) and the wavelength was set at 287 nm. For ursolic acid and oleanolic acid, the mobile phase was mixture (12 88) of 0.1% formic acid in water (A) and methanol (B). Wavelength was 210 nm. As the results, the original spectrum difference was not obvious for leaves and stems. Pretreatment spectroscopy had a significant variation on absorption peak number and intensity in 3 000 similar to 2 800 and 1 800 similar to 500 cm(-1). The results of PCA showed that, the leaves and stems were separated; in addition the difference of different batches leaves was bigger than the stems. The mean contents of picrinine, ursolic acid and oleanolic acid in leaves were 0.79, 8.47, 7.51 and 0.21, 1.78, 1.67 mg . g(-1) in stems, respectively. The content of ursolic acid and oleanolic acid is higher than picrinine, but ursolic acid and oleanolic acid content had no obvious difference. Mean content of three ingredients in leaves is much higher than in stems. Picrinine content in leaves was 3.8 times of immature stems, ursolic acid and oleanolic acid content were 5.1 and 4.2 times of immature stems, respectively. The variety of picrinine content in different batches samples was biggest, ursolic acid and oleanolic acid content was relatively stable. The overall quality of leaves has an obvious difference compared with the immature stems, so the leaves of A. scholaris mix with immature stems could not be as Dai medicine in Dai clinic. Infrared spectroscopy combined with chromatography can quickly identify different medicinal parts and evaluate overall quality of Dai medicine, which can apply to quality control of Dai medicine.