A method for the classification by shape of dried roots of ginseng (Panax quinquefolius L.)

A system for classifying the dried roots of ginseng by shape was developed using roots from 3- and 4-yr-old plantings. The method is based on traditional preferences in the marketplace and allows for the separation of desirable roots (chunk or forked grades) from less-desirable roots (pencil, spider and fibre grades). Results from ginsenoside analyses showed that ginsenoside contents of all grades, other than the fibre grade, were similar. Fibre-grade material had higher concentrations of ginsenosides Rc, Rb2, Rb3 and Rd. Key words: Panax, ginsenosides, quinquefolium, traditional chinese medicine, quality, grade, North American, Canada