Page 39 - phytochemistry general program
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OCH3
CN
NO
CH3
Ricinine ( alkaloid)
Source: Castor seeds
The cake left after the expression of the oil contains about 0.2% ricinine.
Toxicity Ingestion causes nausea, vomiting, hemorrhagic gastroenteritis,
hepatic and renal damage. Also convulsions, coma, hypotension, respiratory
depression, and death.
Ricin (toxic protein): the main toxic principle of castor seeds
Quinoline alkaloids
Source: More than 25 alkaloids have been isolated from the bark of .1
Cinchona species , family Rubiaceae
The 4 major alkaloids in cinchona are two pairs of stereo isomers :
(-) quinine, (+) quinidine,
(-) cinchonidine and (+) cinchonine .2
.3
They occur in plant combined with some organic acids, chiefly quinic and
cinchotannic acids .
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