did you know where your test comes from?
Steroid Hormones
Another important group of pharmaceuticals widely distributed in plants and animals is the steroid hormones. The plant by-product called diosgenin is by far the most common starting material for the preparation of steroids. It is obtained from whole tubers of wild yams; these are broken up in a hammer mill, and the resultant mash is allowed to ferment for two days. It is then dried in the sun, hydrolyzed with mineral acid, and the diosgenin extracted with an immiscible organic solvent (one that will not mix with water), such as light petroleum or heptane.