%D 1995 %0 ARTICLE %T Quantitation of steryl ferulate and p-coumarate esters from corn and rice . %J Lipids %V 30 ( 3 ) %P 269-74 %A Norton RA %M pub7791537 %X The principal steryl ferulate and p-coumarate esters of different fractions from processed corn brans and corn oils , unrefined and refined , and from rice bran and rice bran oil were quantified by high-performance liquid chromatography . The results show that hexane-extracted corn oils yield more than five times the amount of esters compared to expeller processed oils . The yields of esters from bran and related products ranged from 0 . 07 to 0 . 54 mg/g of bran . Unrefined corn oils had levels from 0 . 18 to 8 . 6 mg/g for oil from hexane-extracted bran . By comparison , rice bran had ester levels of 3 . 4 mg/g of bran , and rice bran oil had levels of 15 . 7 mg/g of oil . The predominant esters from corn were sitostanyl and campestanyl ferulate , and sitostanyl and campestanyl p-coumarate . The principal esters from rice bran were cycloartenyl , 24-methylenecycloartanyl , and campesteryl ferulate . Rice bran oils had low levels of 24-methylenecycloartanyl but high levels of cyclobranol esters . The data presented provide a direct comparison of steryl ferulate and p-coumarate levels in the two cereals , and will aid in selecting the most suitable sources for the isolation of these compounds from corn products .