Comparing Ginsenoside Production in Leaves and Roots of Wild American Ginseng (Panax quinquefolius)

James Matthew Searels, Karissa D. Keen, Jonathan L. Horton, H. David Clarke, Jennifer Rhode Ward

Biology Department, University of North Carolina at Asheville, Asheville, USA..

DOI: 10.4236/ajps.2013.46154                

Abstract

American ginseng, Panax quinquefolius L., is an herbaceous perennial species that is destructively harvested for its bioactive compounds called ginsenosides. The demand for this herb fosters illegal poaching and over-harvesting that reduces genetic variability and population viability. Five wild populations in western North Carolina were studied to better understand the production of ginsenosides in leaf and root tissues. Total ginsenoside concentration was significantly higher in leaves than roots, though total yield was higher in roots due to greater root biomass. However, some ginsensosides (Rb2, Rd and Re) had higher or more consistent yields in leaves than roots, so might be developed into a sustainable source of these medicinally-active compounds. Additionally, we identified regional root chemotypes that differed in the production of the ginsenosides Rg1 and Re and could be developed into regional cultivars depending on the desired panel of ginsenosides.

Keywords

American Ginseng; Chemotypes; Ginsenosides; HPLC; Medicinal Plants; Panax quinquefolius

Conflicts of Interest

The authors declare no conflicts of interest.

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