Abstract
The amounts of panaxynol and panaxydol, which are major polyacetylone compounds In white ginseng were determined by capillary-GC (FID), and the extraction efficiencies when using varictus extraction solvents (petroleum ether, dichloromethane, ether, ethyl acetate, acetone, acetonitrilr and methanol) and various extraction methods (shaking, Soxhlet and reflux) were compared . The GC column was SPB-1 fused silica capillary (0.25 mm id x30 m, Supelco), and the column oven temperature was programmed to rise from 200 ℃ to 300 ℃ at the rate of 4 ℃ per minute. The extraction efficiencies for panaxynol and panaxydol according to extraction souvtints were the highest in methanol and decreased in the order of dichloromethane, acetone, ether, ethyl acetate, acetonitrile and petroleum ether. The extracttion efficiencies for panaxynol and panaxydol according to extraction methods were the highest for reflux and the lowest for shaking, and those with Soxhlet were almost equal to those for reflux. The analytical amounts of panaxynol and panaxydol obtained by reflux with methanol %mere 4.2 and 6.4 mg/g, respectittely in white ginseng. Keywords polyacetylene, panaxynol, panaxydol, capillary-GC (FID), extraction efficiency