1) Chemical irritant 2) Derived from pepper 3) Piperin
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https://www.crosswordclues.com/clue/piperine
1) Piperin
Found on
https://www.crosswordclues.com/clue/piperine
Piperine, along with its isomer chavicine, is the alkaloid responsible for the pungency of black pepper and long pepper. It has also been used in some forms of traditional medicine and as an insecticide. Piperine forms monoclinic needles, is slightly soluble in water (1g/25L (18°C)), and is highly soluble in alcohol (1g/15mL), ether (1g/36mL) and...
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http://en.wikipedia.org/wiki/Piperine
• (n.) A white crystalline compound of piperidine and piperic acid. It is obtained from the black pepper (Piper nigrum) and other species.
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http://thinkexist.com/dictionary/meaning/piperine/
an organic compound classed either with the lipid family (a group consisting of fats and fatlike substances) or with the alkaloids, a family of ...
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http://www.britannica.com/eb/a-z/p/71
Pip'er·ine noun [ Latin
piper pepper: confer French
piperin ,
piperine .]
(Chemistry) A white crystalline compound of piperidine and piperic acid. It is obtained from the black pepper (
Piper nigrum ) and other species.
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http://www.encyclo.co.uk/webster/P/93
Piperine: A pungent alkaloid that is concentrated in the outer skin of pepper berries (which gives pepper much of its bite) and is found in other spices and vegetables including jalapeno peppers. Piperine is used as a flavoring and as an insecticide. The word is derived from the Latin piper, pepper.
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http://www.medterms.com/script/main/art.asp?articlekey=25033
Piperine is an alkaloid occurring in pepper. It is a feeble base that crystallises in prisms, and colours sulphuric acid red.
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http://www.probertencyclopaedia.com/browse/GP.HTM
No exact match found.
