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Diosgenin, a phytosteroid sapogenin, is the product of hydrolysis by acids, strong bases, or enzymes of saponins, extracted from the tubers of Dioscorea wild yam species, such as the Kokoro. It is also present in smaller amounts in a number of other species.
There is little modern clinical research on Dioscorea villosa, and the one study of a wild yam-containing cream for menopausal symptoms failed to find any value from this therapy. [18] According to the American Cancer Society , there is no evidence to support wild yam or diosgenin being either safe or effective in humans.
Yam is an important dietary element for Nigerian and West African people. It contributes more than 200 calories per person per day for more than 150 million people in West Africa, and is an important source of income. Yam is an attractive crop in poor farms with limited resources. It is rich in starch, and can be prepared in many ways.
[8] [irrelevant citation] Wild yams are an important crop, as they have been used to prevent menstrual cramps, stomach cramps, and general pain for centuries. During the 1950s scientists found that the roots of wild yams contained diosgenin which is a plant-based estrogen; diosgenin is hypothesized to aid in chemical defense against herbivores.
Dioscorea alata – also called ube (/ ˈ uː b ɛ,-b eɪ /), ubi, purple yam, or greater yam, among many other names – is a species of yam (a tuber). The tubers are usually a vivid violet - purple to bright lavender in color (hence the common name), but some range in color from cream to plain white.
Jinenjo (自然薯, "wild yam") is another kind of Dioscorea japonica, which is native to fields and mountains in Japan. In Chinese, Dioscorea japonica is known as yě shānyào (野 山藥) which translates to English as "wild Chinese yam" or simply "wild yam". [citation needed] Another name is Rìběn shǔyù (日本 薯蕷; literally ...
Wild yam is a common name for several plants and may refer to: Dioscorea dregeana, native to southern Africa; Dioscorea japonica, native to eastern Asia;
Dioscorea bulbifera (commonly known as the air potato, air yam, bitter yam, cheeky yam, potato yam, [2] aerial yam, [3] and parsnip yam [4]) is a species of true yam in the yam family, Dioscoreaceae. It is native to Africa, Asia and northern Australia. [ 1 ]
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