黄芪结构地区差异性研究

Study on astragalus membranaceus structure and differences of regions

为了对不同地区黄芪的差异性进行研究,采用中红外(MIR)光谱,一维MIR光谱、二阶导数MIR光谱开展对不同产地(甘肃、内蒙古、河北、山西、陕西)黄芪进行红外光谱研究,实验表明:黄芪的红外吸收模式主要包括:ν_(asCH_(2-黄芪))、ν_(sCH_(2-黄芪))、ν_(amide-Ⅰ_(-黄芪))、ν_(amide-Ⅱ_(-黄芪))、ν_(C=O_(-黄芪))和ν_(C-O_(-黄芪))。结果表明,MIR光谱可以快速开展黄芪结构差异性研究,并且二阶导数MIR光谱的谱图分辨能力要优于一维MIR光谱。拓展了MIR光谱技术在黄芪结构差异性的研究范围。

In order to study the differences of astragalus in different regions, mid-infrared(MIR) spectrum,one-dimensional MIR spectrum and second-derivative MIR spectrum were used to carry out infrared spectrum studies on astragalus from different regions(Gansu, Inner Mongolia, Hebei, Shanxi and Shaanxi). There were ν_(asCH_(3-Astragalus membranaceus)),ν_(asCH_(2-Astragalusmembranaceus)), ν_(sCH_(3-Astragalusmembranaceus)), ν_(sCH_(2-Astragalusmembranaceus)), ν_(amide-Ⅰ-Astragalusmembranaceus), ν_(amide-Ⅱ-Astragalusmembranaceus), ν_(C=O-Astragalus membranaceus) and ν_(C-O-Astragalus membranaceus). The results showed that MIR spectroscopy could be used to distinguish astragalus membranaceus structure differences. The key roles of MIR spectroscopy in study of structure differences of astragalus membranaceus was demonstrated.