Effects of Fermented Chub Mackerel Extract on Lipid Metabolism of Rats Fed a High-Cholesterol Diet

  • Santoso, U. (Department of Animal Science, Faculty of Agriculture, Bengkulu University) ;
  • Ishikawa, M. (Poultry Institute) ;
  • Tanaka, K. (Laboratory of Animal Nutrition, Division of Bioresources and Bioproduction Graduate School of Agriculture, Hokkaido University)
  • Received : 1999.01.18
  • Accepted : 1999.04.19
  • Published : 2000.04.01


The present study was conducted to evaluate effect of fermented chub mackerel extract (FCME) on lipid metabolism of rats fed a diet supplemented with 1% cholesterol. Four week-old male rats were divided into three groups of 15 rats with 0, 0.1% or 0.2% FCME supplementation. In comparison with control, rats fed 0.2% FCME showed reduction of activities of acetyl-Coenzyme A carboxylase (p<0.05), 3-hydroxy-3-methyl glutaryl Coenzyme A reductase (p<0.01) and fatty acid synthetase (p<0.01). Rats fed 0.2% FCME also showed reductions in free cholesterol in the liver (p<0.05), and in concentrations of free cholesterol (p<0.05), LDL+VLDL-cholesterol (p<0.05), triglyceride (p<0.01) and phospholipid (p<0.01) in the plasma. Plasma HDL-cholesterol concentration was significantly (p<0.05) higher in treatment groups as compared with control group. Atherogenic index was also significantly lower in rats fed 0.1% or fed 0.2% supplement diet, whereas bile acid in feces was not significantly affected. The current study showed that 0.2% inclusion level of the fermented chub mackerel extracts might have hypolipidemic properties.

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