الفهرس 
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Abstract
Lipids play an important role in the nutrition due to its high caloric value as well as synthesis of steroid hormones and other compounds necessary to the body. But, the elevation of some blood lipid, such as cholesterol and triacyiglycerols especially in old ages is considered a positive risk factor for atherosclerosis which seem to be a predisposing factor in coronary artery disease. The treatment of such cases is depended upon drugs and surgical interference. Trials are directed nowadays to investigate the role of appreciate diet not only in management of such problems but also in their prevention by using diet rich in polyunsaturated fat (e.g. fish oil and vegetable oil) rather than saturated fat diet, also by using some food additive such as ascorbic acid.
So many investigators have been emphasized such idea. Therefore, this work carried out to study the effect of ascorbic acid and/or linseed oil on lipid criteria in male albino rats. This include determination of serum criteria (total lipids, triacylglycerols, total cholesterol, phospholipids, LDL, VLDL and HDL) and liver criteria (moisture %, dry matter %, ether extract % and cholesterol %).
Experiment:
For performing the present study 76 male healthy albino rats were used. The rats were classified into 4 groups (19 rats each). The first group received basal diet formulated according to NRC recommendation and considered as a control group. The second group received basal diet supplemented with 5 g ascorbic acid/kg ration. The third group received basal diet supplemented with 100 gm linseed oil/kg ration while the fourth group received basal diet supplemented with 5 g ascorbic acid plus 100 gm linseed oil/kg ration.