Oh

conditions (ca. pH 3) and minimal water during the preparative heating process (Matsuura et al., 1994). Further work resulted in the isolation of arginyl-fructosyl-glucose (Zheng, Y. et al., 1996).

Distribution of the Main Saponins of Panax ginseng

The distribution of ginsenosides varies in nature and quantity throughout the plant. Typical yields of the major ginsenosides found in 4-year old South Korean ginseng plants were estimated by an HPLC-spectrophotometric method (Soldati and Sticher, 1980); results are presented in Table 5.8.

Table 5.8. Percentage yields of ginsenosides in various parts of Panax ginseng

Ginsenosides

Rb,

Rb2

Rc

Rd

Re

Rf

Rg,

Rg2

Total

Leaves

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