PROPERTIES OF CORN SAMPLES VARYING IN PERCENTAGE OF DENT AND FLINT KERNELS

Commercial corn samples from three production areas, mid-western U.S.A ., eastern Canada (Ontario) and western Canada (Alberta), were evaluat ed for their physical and chemical properties in relation to the perce ntage of dent and flint kernels. The percentage of dent-type kernels ( 97, 93, 42 and 22% for the U.S.A., Ontario and two Alberta samples) wa s positively correlated with starch content, and negatively correlated with ether extractable material of the kernels. Kernel density correl ated negatively with protein content. Kernel weight correlated negativ ely with ether extractable material and total ash content. The Alberta corn contained move nonpolar lipids than the high dent corns from U.S .A. and Ontario. Total amounts of lipid and palmitic acid correlated n egatively with dent percentage. The differences in physical and chemic al properties were attributed to the Pint character of Alberta corn. ( C) 1995 Academic Press Limited