
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 hu...
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http://en.wikipedia.org/wiki/Lupinine

• (n.) An alkaloid found in several species of lupine (Lupinus luteus, L. albus, etc.), and extracted as a bitter crystalline substance.
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http://thinkexist.com/dictionary/meaning/lupinine/
Lu'pin·ine noun (Chemistry) An alkaloid found in several species of lupine (
Lupinus luteus ,
Latin albus , etc.), and extracted as a bitter crystalline substance.
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http://www.encyclo.co.uk/webster/L/70
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