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diosgenin
|Section2= |Section3= }} Diosgenin, a steroid sapogenin, is the product of hydrolysis by acids, strong bases, or enzymes of saponins, extracted from the tubers of Dioscorea wild yam, such as the Kokoro. The sugar-free (aglycone), diosgenin is used for the commercial synthesis of cortisone, pregnenolone, progesterone, and other steroid products. ==Sources== It is present in ''Costus speciosus'', ''Smilax menispermoidea'', species of ''Paris'', ''Aletris'', ''Trigonella'', and ''Trillium'', and many species of ''Dioscorea - D. althaeoides, colletti, futschauensis, gracillima, hispida, hypoglauca, floribunda, mexicana'' and composita'''' nipponica, panthaica, parviflora, septemloba'', and ''zingiberensis''.〔(【引用サイトリンク】title=2950 Diosgenin )〕
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