School of Chinese Medicine
Localization of ginsenosides in the rhizome and root of Panax ginseng by laser microdissection and liquid chromatography–quadrupole/time of flight-mass spectrometry
The root and rhizome of Panax ginseng C.A. Mey, known as ginseng, is a commonly used medicinal plant. Ginsenosides are the major active components responsible for the tonic effects of this herb. Here, the combination of laser microdissection and ultra-high performance liquid chromatography quadrupole/time of flight-mass spectrometry (UHPLC-QTOF-MS) was applied to investigate the localization of ginsenosides in root and rhizome of P. ginseng. Five kinds of tissue cells were separated from the rhizome, main root and branch root of ginseng. Fifty-nine ginsenosides were identified and the results showed that the cork contained more kinds of ginsenosides than did the cortex, phloem, xylem and resin canals. It is interesting that the phloem, xylem and resin canals from branch root contained a greater number of ginsenosides than did from main root. This study provides solid evidence on the accumulation of ginsenosides in cork, cortex, phloem and xylem.
Ginseng, Ginsenosides, Laser microdissection, Tissue-specific, UHPLC-Q/TOF-MS
Source Publication Title
Journal of Pharmaceutical and Biomedical Analysis
This work was supported by the Faculty Research Grant of Hong Kong Baptist University (FRG2/12-13/030) and Hong Kong Research Grants Council (GRF) (HKBU-263412).
Link to Publisher's Edition
Liang, Zhitao, Yujie Chen, Liang Xu, Minjian Qin, Tao Yi, Hubiao Chen, and Zhongzhen Zhao. "Localization of ginsenosides in the rhizome and root of Panax ginseng by laser microdissection and liquid chromatography–quadrupole/time of flight-mass spectrometry." Journal of Pharmaceutical and Biomedical Analysis 105 (2015): 121-133.