Definitions for pyrrolizidine alkaloids
U.S. National Library of Medicine
A group of ALKALOIDS, characterized by a nitrogen-containing necine, occurring mainly in plants of the BORAGINACEAE; COMPOSITAE; and LEGUMINOSAE plant families. They can be activated in the liver by hydrolysis of the ester and desaturation of the necine base to reactive electrophilic pyrrolic CYTOTOXINS.
Use the citation below to add this definition to your bibliography:
"pyrrolizidine alkaloids." Definitions.net. STANDS4 LLC, 2013. Web. 22 May 2013. <http://www.definitions.net/definition/pyrrolizidine alkaloids>.