The effect of feeding black oil on body composition, serum lipids, and adipose tissue lipoprotein lipose activity in rats
1993
Chamieh, M.C.E.
The effect of feeding black cumin oil (BO) on plasma lipids in comparison with other sources of unsaturated dietary fat (corn oil (CO) and olive oil (OO) was studied. Twenty one male Sprague Dawley rats were divided into three groups and fed diets containing 50 of dietary calories from black cumin oil, corn oil, and olive oil. The diets were fed ad-libitum for a period of 6 weeks at the end of which rats were sacrified and blood samples were analysed for serum triglycerides total and HDL-cholesterol, glucose and insulin. Carcasses were analyzed for total body protein, fat and water content. Individual fat pads were dissected out and weighed. Samples from the right epididymal pad were assayed for adipose tissue lipoprotein lipase activity (AT-LPLA). Results showed that BO and CO fed rats exhibited a significantly lower percent body fat and percent liver fat than OO fed rats. Serum analysis showed that BO and CO had significantly lower serum triglyceride levels than OO fed rats. High Density Lipoprotein Cholesterol (HDLC) levels in serum, HDLC to total Cholesterol ration (TC) and Adipose Tissue Lipoprotein Lipase Activity (ATLPLA) were significantly higher in BO and CO than OO fed rats. The data suggest that BO and CO feeding lead to similar effects on plasma lipid levels which are different from OO feeding. The increased HDLC/TC ratio in BO and CO fed rats over OO fed rats provides evidence that the higher degree of unsaturation in these fats could be more advantageous than OO feeding in prevention of artheriosclerosis. It is also concluded that BO feeding has similar effects on plasma lipid levels to CO feeding the latter being superior in its organoleptic properties.
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