Medicinal Plant

2010, v.1(06) 54-56

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Discrimination of Padax Notoginseng (Sanqi) by Fourier Transform Infrared Spectroscopy
Discrimination of Padax Notoginseng (Sanqi) by Fourier Transform Infrared Spectroscopy

摘要(Abstract):

[Objective] To seek a simple and rapid method of discriminating the raw materials of Chinese herb. [Method] The different grades dried flowers and dried roots of Padax Notoginseng were determined by fourier transform infrared spectroscopy. [Result]The results showed that the spectra of the flower and the root exhibited obvious differences in the range of 1 800-700 cm-1, and there were obvious differences of certain absorbance ratio between them too. The value of A1242/A2928, A1080/A2928 and A1020/A2928 of root were larger than that of the flower, while the A1643/A2928, A1416/A2928 and A1372/A2928 value of root were smaller than that of the flower. The spectral features and peaks of different grade Sanqi were very similar, some absorbance ratio differences were observed among characteristic absorption peaks. For the ratios of A1640/A2928, A1240/A2928, A1080/A2928, A1022/A2928 and A928/A2928, different grades of Sanqi presented the order as follows: 20 > 40 > 60 >80 >100 heads. [Conclusion]The containing of the flower and the root was almost the same, but the quality of which was different according to the different absorbance ratio. The FTIR is proved to be a rapid, simple and non-destructive method and it will be the standard method in identifying the grade and source of Chinese herb.

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基金项目(Foundation): Supported by Natural Science Foundation(30960179,10764006)

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