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Analysis of Dencichine in Panax Notoginseng by Gas Chromatography–Mass Spectrometry with Ethyl Chloroformate Derivatization

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Wei Jia, Professor and Co-Director of the UNCG Center for Research Excellence in Bioactive Food Components (Creator)
Institution
The University of North Carolina at Greensboro (UNCG )
Web Site: http://library.uncg.edu/

Abstract: Dencichine (ß-N-oxalyl-l-a,ß-diaminopropionic acid) is a haemostatic agent present in well-known traditional Chinese medicinal herbs such as Panax notoginseng, as well as other Panax species. It is also a reported neurotoxic agent found in Lathyrus sativus (grass pea seed) and cycad seeds. A method was developed for quantitative determination of the non-protein amino acid, dencichine, in plant samples of P. notoginseng and the adventitious roots directly from the explants of P. notoginseng after derivatization with ethyl chloroformate (ECF) by gas chromatography–mass spectrometry (GC–MS). l-2-chlorophenylalanine was used as an internal standard. Calibration curves were linear (r2 = 0.9988, n = 6) in the range of 10–800 µg/ml for dencichine. Limit of detection and quantification for dencichine were 0.5 µg/ml and 2 µg/ml, respectively. This rapid and specific method may be applied to the quantification of dencichine in complex medicinal plants and their products.

Additional Information

Publication
Journal of Pharmaceutical and Biomedical Analysis, 43(3), 920-925
Language: English
Date: 2007
Keywords
gas chromatography–mass spectrometry, dencichine, Panax notoginseng, adventitious roots, ethyl chloroformate (ECF)