13C NMR Fingerprints of Flos Lonicera

Abstract

Abstract:

¹³C NMR spectra of Flos lonicera extracts were obtained by PFT-NMR. The ¹³C chemical shifts were assigned and compared with those of the chlorogenic acid, the effective component of Flos lonicera. The results suggest that the ¹³C NMR spectra of the Flos lonicera extracts show good reproducibility, and the spectral characteristics of the extracts obtained from different Flos lonicera sample are, in general, similar to those of chlorogenic acid. Therefore, the ¹³C NMR fingerprints of Flos lonicera extract can be used as a criterion to check the authenticity of Flos lonicera and Flos lonicera products. Comparison of the ¹³C NMR fingerprints between the high grade Flos lonicera and those of lower quality was performed, and the results show that it is feasible to use the differences in the ¹³C NMR fingerprints to measure the quality of Flos lonicera with sufficient reliability.

Key words: NMR, fingerprints, chlorogenic acid, Flos lonicera

CLC Number:

O482.53

SUN Qing-Lei, LIN Yun-Liang, WANG Xiao, CHENG Chuan-Ge, LIU Jian-Hua-. ¹³C NMR Fingerprints of Flos Lonicera[J]. Chinese Journal of Magnetic Resonance, 2006, 23(2): 181-186.

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¹³C NMR Fingerprints of Flos Lonicera

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