The Collaborative International Dictionary
Lupinine \Lu"pin*ine\, n. (Chem.) An alkaloid found in several species of lupine ( Lupinus luteus, Lupinus albus, etc.), and extracted as a bitter crystalline substance, having a formula C10H19NO. Called also l-lupinine
Note: Chemically it is a a bicyclic saturated quinolizine
[1-R-trans]-Octahydro-2H-quinolizine-1-methanol, with
the structure:
CH2OH | /\ H /\ / \|/ \ | | | | N | \ / \ / \/ \/
--[MI11]
Wiktionary
n. (context organic compound English) A bitter alkaloid present in ''Lupinus''.
Wikipedia
Lupinine is a bitter tasting quinolizidine alkaloid present in Lupinus species ( lupins), plants of the family Fabaceae. The scientific literature contains many reports on the isolation and synthesis of this compound. The characteristically bitter taste of lupin beans, attributable to the alkaloids which they contain, renders them unsuitable for human and animal consumption. However, because lupin beans have potential nutritional value due to their high protein content, efforts have been made to reduce their alkaloid content, as well as to develop "sweet" varieties of Lupinus.
Usage examples of "lupinine".
Willstatter described the following alkaloids as occurring in the different species: Lupinine, a crystalline powder and Lupinidine, a syrupy liquid in Lupinus Luteus and L.