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ginsenoside
Ginsenosides or panaxosides are a class of natural product steroid glycosides and triterpene saponins. Compounds in this family are found almost exclusively in the plant genus ''Panax'' (ginseng), which has a long history of use in traditional medicine that has led to the study of pharmacological effects of ginseng compounds. As a class, ginsenosides exhibit a large variety of subtle and difficult-to-characterize biological effects when studied in isolation.
Ginsenosides can be isolated from various parts of the plant, though typically from the roots, and can be purified by column chromatography. The chemical profiles of ''Panax'' species are distinct; although Asian ginseng, ''Panax ginseng'', has been most widely studied due to its use in traditional Chinese medicine, there are ginsenosides unique to American ginseng (''Panax quinquefolius'') and Japanese ginseng (''Panax japonicus''). Ginsenoside content also varies significantly due to environmental effects.
==Classification==
Ginsenosides are named according to their retention factor value in thin layer chromatography (TLC). They can be broadly divided into two groups based on the carbon skeletons of their aglycones: the four-ring dammarane family, which contains the majority of known ginsenosides, and the oleanane family. The dammaranes can be further subdivided into two main groups, the protopanaxadiols and protopanaxatriols, with other smaller groups such as the ocotillol-type pseudoginsenoside F11 and its derivatives.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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