Influence of different protein diets on lipids pattern in albino rats

ABSTRACT

Five groups of rats were fed separately diets containing 12% protein [soybean, cottonseed, protylan and their mixture of equal amounts] as well as casein as a standard protein diet. The experiment continued for 6 weeks and blood samples were taken before the initiation of the experiment and after 3 and 6 weeks in order to determine total lipids, cholesterol, phospholipids, triglycerides and lipoprotein fractions. It was concluded that soybean and cottonseed protein diet caused an elevation in cholesterol, triglycerides and beta-lipoproteins, whereas a significant decrease in phospholipids was observed. Protylan protein diet decreased serum total lipids. The mixture protein diet was mostly identical to casein diet as a control where no effect on serum lipids was observed