Résumé
A comparison between the effect of dietary casein and beans on the blood sugar level and different serum lipid parameters of alloxan diabetic was done. The effect adding either carrot or orange residue to the beans diet was also investigated. Results showed that a significant decrease in blood sugar level of diabetic rats occurred when casein was replaced by beans in the diet. Lipid parameters namely serum cholesterol, triglycerides, fatty acids and phospholipids also were lower in rats on the beans diet relative to casein. The inclusion of either carrot or orange reside as an additional source of dietary fiber to the beans diet did not further improve the effect of beans in this respect. Serum insulin level was low in diabetic rats and did not change by feeding on any of these diets. Only carrot residue caused slight increase in insulin secretion. It was concluded that beans as a plant source of protein is mush preferred for diabetic rats than the animal source of protein such as casein. In addition, inclusion of either carrot or orange residue to the beans diet did not further improve its effect. In our previous experiments these two ingredients caused marked improvement on the effect of casein on diabetic rats