利用FTIR指纹图谱研究中药材黄芪

Study on Chinese Herb Astragalus Membranceus by FTIR Fingerprint

为了寻求简便快速鉴别黄芪不同生长年限和不同产地的新方法,该文采用分辨率高、准确度好,简便快捷、无污染的FTIR光谱法,研究了山西不同产地同一生长年限黄芪FTIR的光谱特征,并与内蒙和甘肃的黄芪作了比较;同时考察了山西同一产地不同生长年限黄芪的FTIR光谱特征。结果表明:22批样品的黄芪共有峰为9处,可用于鉴别黄芪的真伪;差异峰有5处,其峰的数目、形状及相对强度可用于区分黄芪的不同产地和不同生长年限。因此,可以利用FTIR指纹图谱方便快捷地区分不同生长年限和不同产地的黄芪。

The aim of the study is to find new approach to identifing different growth years and different producing areas of astragalus membranceus simply and rapidly.The FTIR spectrometry,which is accurate,simple and efficient and has high resolution,was used to obtain the sample’s FTIR spectrometry.After simple separation and extraction,the drying powder of the sample was detected.In 22 samples,there were 9 common peaks for identifying the authenticity of astragalus membranceus and 5 different peaks.According to the number,shape,and relative intensity of the peak,different growth years and different producing areas of astragalus membranceus can be distinguished.Conclusion：It is convenient and fast to identify different growth years and different producing areas of astragalus membranceus by FTIR fingerprint.