PROCESSING AND ENRICHMENT OF YELLOW MAIZE GRITS WITH LEGUMES ON THE PRODUCED EXTRUDATES: I. CHEMICAL EVALUATION.

Document Type : Original Article

Authors

Food Technology Research Institute, Agricultural Research Centre, Giza, Egypt

Abstract

Faba bean, lupin, kidney bean, chick pea, cow pea, lentil and fenu­greek were germinated, dried and milled. Blends of legumes flour (germinated and ungerminated) were prepared in ratios of 5%, 10% and 15% with yellow corn grits. Extrusion process was carried out for the blends. The obtained data revealed that, germination of legume seeds in­creased the activities of protease and amylases which caused a decrease in protein and carbohydrate contents and increase total soluble sugars. A decrease in phytic acid, tannin and fiber were also noticed after germi­nation. Germination increased the protein digestibility of all studied le­gume samples while a slight decrease was noticed in Trypsin inhibitor. Extrusion process caused increasing protein digestibility, as well as de­creasing trypsin inhibitor.