薯蓣皂苷配基（英语：Diosgenin，或称为薯蓣皂苷元）是一种皂苷元，这是由酸，强碱或酶水解皂苷产生的。薯蓣皂苷配基可从盾叶薯蓣（D.Zingiberensis C. H. Wright）、穿龙薯蓣（D.nipponica Makino）、黄山药（D.panthaica prain et Burkil）、紫黄姜（D.nipponica Makinovar rosthani prain et Burk）等薯蓣属的块茎中提炼出来。薯蓣皂苷元一般被用来生产孕烯醇酮、孕酮、可的松等激素类药物。

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.