不同产地党参药材及其水提物的红外光谱特征分析

目的：对不同产地党参药材及其水提物的红外指纹图谱进行比较分析，说明党参的红外光谱特点。方法：采用傅里叶变换红外光谱（Fourier transform infrared spectroscopy，FTIR）分析方法，采集党参药材及水提物的红外光谱，对光谱进行双指标序列分析。结果：7 个产地党参药材的红外图谱在3 385、2 929、2 360、1 734、1 541、1 507、1 456、1 250、870、818、778、668 cm^-1 附近有12 个共有峰，主要对应党参中的多糖、党参苷、内酯类等成分。以陵川党参为对照，得到原药材的平均共有峰率为72.74%，水提物的平均共有峰率为58.54%，其中原药材中壶关党参与陵川党参的关系最为接近。结论：FTIR图谱分析可为党参的鉴定及质量控制提供补充。

Objective: To find out characteristics of Codonopsis Radix's infrared spectroscopy by comparing and analyzing infrared fingerprints of Codonopsis Radix from different habitats and their aqueous extracts. Methods: Fourier transform infrared spectra of the crude drugs and their aqueous extracts were collected. Then the spectra were processed by dual index sequence analysis. Results: FTIR spectra of Codonopsis Radix from 7 different habitats had 12 common peaks at 3 385,2 929,2 360,1 734,1 541,1 507,1 456,1 250,870,818,778 and 668 cm^-1,which corresponded to components such as polysaccharides,dangshen glycosides and lactone,etc.With Lingchuan Codonopsis Radix as the control group,the original group's common peak ratio received was 72.74%,the aqueous extract group's common peak ratio was 58.54%,and Codonopsis Radix of Lingchuan and Huguan had the closest relationship in similarity. Conclusion: The analysis of FTIR spectra could provide supplement for the identification and quality control of Codonopsis Radix.

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