Yucca tree roots have saponin glycosides. Triterpenoid saponins are triterpenes which belong to the group of saponin compounds. The glycoside and saponin constituents are considered toxic. The chemical structure of ginseng consists of ginsenosides and saponin glycosides. According to it, its rhizome contains asparagine, mucilage, a cardio-tonic glycoside, saponin, and quinine gluconate. The lima bean can contain anti-nutrients like phytic acids, saponin, oxalate, tannin, and trypsin inhibitors. The most active chemical is apparently the glycoside myricinic acid, which is related to saponin. Digitonin is a steroidal saponin (saraponin) obtained from the foxglove plant "Digitalis purpurea". Constituents of "G. pentaphyllum" include sterols, saponin, flavonoids, and chlorophyll. The rhizome contains diosgenin, a saponin steroid with estrogenic effects. Sarsasapogenin is a steroidal sapogenin, that is the aglycosidic portion of a plant saponin. Some saponin compounds are the same as those found in ginseng roots. It contains phytochemicals, such as quassin and saponin, and ailanthone. QS21 adjuvant is a saponin obtainable from "Quillaja saponaria" extract. The sarsasapogenin saponin can be extracted from the dried powdered root with 95% ethanol.