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[Analysis and identification of Geranium by two-dimensional correlation infrared spectroscopy]
Ren-Shuang Sun1, Zhe-Xiong Jin, Zhe-Peng Zhang
1Center of Research and Development on Life Sciences and Environmental Sciences, Harbin University of Commerce, Harbin 150076, China. srs666@sina.com
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|April 17, 2013
Summary
Tri-step infrared spectroscopy successfully identified tannins and calcium oxalate in genuine Herba Geranium from different regions. This method distinguishes regional variations in medicinal plants, aiding quality control.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Natural Products Chemistry
Context:
- Herba Geranium is a traditional Chinese medicine with geographical variations.
- Accurate identification and quality control of medicinal plants are crucial.
- Existing methods may not sufficiently differentiate regional chemotypes.
Purpose:
- To apply a tri-step infrared spectroscopy method for analyzing Herba Geranium components.
- To differentiate genuine Herba Geranium from Heilongjiang (HLJG), Jilin (JLG), and Liaoning (LNG).
- To assess the utility of this spectroscopic approach for Chinese medicinal resources.
Summary:
- Fourier transform infrared spectroscopy (FTIR), second derivative spectra, and 2D-COS identified tannins and calcium oxalate in Herba Geranium.
- Distinct spectral differences were observed among HLJG, JLG, and LNG samples.
- 2D-COS analysis clearly distinguished the three regional varieties based on unique auto-peak profiles.
Impact:
- The tri-step infrared spectroscopy method enables rapid analysis and identification of genuine Geraniums.
- This technique can be applied to the study of Chinese medicinal resources and the establishment of quality standards.
- Provides a foundation for ensuring the authenticity and quality of herbal medicines.
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