Saponins

constituents of some plants that produce a soap like frothing effect when agitated in water
Found on http://www.encyclo.co.uk/local/20575

saponins

Sapogenin glycosides. A type of glycoside widely distributed in plants. Each consists of a sapogenin as the aglycon moiety, and a sugar. The sapogenin may be a steroid or a triterpene and the sugar may be glucose, galactose, a pentose, or a methylpentose. Sapogenins are poisonous towards the lower forms of life and are powerful haemolytics when inj...
Found on http://www.encyclo.co.uk/local/20973

Saponins

Saponins are naturally occurring surfactants form soapy leather when dissolve in water.
Found on http://www.motherherbs.com/herb-glossary.html

saponins

Type: Term Pronunciation: sap′ō-ninz Definitions: 1. Glycosides of plant origin characterized by the properties of foaming in water and of lysing cells (as in hemolysis of erythrocytes when saponins are injected into the bloodstream); powerful surfactants; many have antibiotic activities.
Found on http://www.medilexicon.com/medicaldictionary.php?t=79623
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