
Sinapine is an alkaloidal amine found in some seeds, particularly oil seeds of plants in the family Brassicaceae. It is the choline ester of sinapic acid. Sinapine was discovered by Etienne Ossian Henry in 1825. ==Occurrence== Sinapine typically occurs in the outer seed coat of oil crops and is plentiful in some types of press cake leftover after ...
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http://en.wikipedia.org/wiki/Sinapine

• (n.) An alkaloid occuring in the seeds of mustard. It is extracted, in combination with sulphocyanic acid, as a white crystalline substance, having a hot, bitter taste. When sinapine is isolated it is unstable and undergoes decomposition.
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http://thinkexist.com/dictionary/meaning/sinapine/
Sin'a·pine noun [ Latin
sinapi ,
sinapis , mustard, Greek .........: confer French
sinapine .]
(Chemistry) An alkaloid occuring in the seeds of mustard. It is extracted, in combination with sulphocyanic acid, as a white crystalline substance, having a hot, bitter taste. When...
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http://www.encyclo.co.uk/webster/S/105

Sinapine is an organic base, existing as sulphocyanate in the seed of Sinapis alba (white mustard), and first extracted by Henry and Garot in 1825.
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http://www.probertencyclopaedia.com/browse/GS.HTM
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