Raman spectrum analysis of forsythia leaves

WANG Wei; XI Xin-xin; WANG Bei; LI Jian-bo; JING Heng-cui

doi:10.3969/j.issn.1001-3806.2011.05.026

In order to assess the quality of the forsythia leaves gathered in different periods rapidly, their Raman spectra were obtained with RM-1000 confocal microscopy laser Raman spectrometer, then the specific peaks of their Raman spectra were obtained after analysis and experiments. The Raman spectra of forsythia leaves show the main characteristic peaks are mainly in the range of 700cm-11600cm-1 and 2600cm-13100cm-1. The characteristic peaks are closely related with forsythin which is considered as the main active ingredient in the forsythia leaves and can be used for qualitative identification. The peak intensity in the spectra of forsythia leaves gathered in different periods is significantly different so that the quality of forsythia leaves can be evaluated. Raman spectra can be used for qualitative identification and evaluation of forsythia Leaves and it is direct, fast, simple and accurate. The results are useful for quality control of the traditional Chinese medicine.

Raman spectrum analysis of forsythia leaves

1. College of Pharmacy, Henan University, Kaifeng 475004, China;

2. College of Physics and Electronic Information, Henan University, Kaifeng 475004, China

Received Date: 2010-09-29

Accepted Date: 2010-12-10

Available Online: 2011-09-25

Abstract: In order to assess the quality of the forsythia leaves gathered in different periods rapidly, their Raman spectra were obtained with RM-1000 confocal microscopy laser Raman spectrometer, then the specific peaks of their Raman spectra were obtained after analysis and experiments. The Raman spectra of forsythia leaves show the main characteristic peaks are mainly in the range of 700cm-11600cm-1 and 2600cm-13100cm-1. The characteristic peaks are closely related with forsythin which is considered as the main active ingredient in the forsythia leaves and can be used for qualitative identification. The peak intensity in the spectra of forsythia leaves gathered in different periods is significantly different so that the quality of forsythia leaves can be evaluated. Raman spectra can be used for qualitative identification and evaluation of forsythia Leaves and it is direct, fast, simple and accurate. The results are useful for quality control of the traditional Chinese medicine.

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Reference (16)

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Raman spectrum analysis of forsythia leaves

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