Effect of Marine Protein Supplementation on Lipid Profile of Growing Rats Compared to Soybean Protein and Casein

  • Narayan, Bhasakar (Department of Meat, Fish & Poultry Technology Central Food Technological Research Institute (CFTRI)) ;
  • Yamaguchi, Kohei (Laboratory of Biofunctional Material Chemistry, Division of Marine Bioscience, Faculty of Fisheries Sciences, Hokkaido University) ;
  • Hosokawa, Masashi (Laboratory of Biofunctional Material Chemistry, Division of Marine Bioscience, Faculty of Fisheries Sciences, Hokkaido University) ;
  • Fukunaga, Kenji (Faculty of Engineering, Kansai University) ;
  • Nishiyama, Toshimasa (Department of Public Health, Kansai Medical University) ;
  • Miyashita, Kazuo (Laboratory of Biofunctional Material Chemistry, Division of Marine Bioscience, Faculty of Fisheries Sciences, Hokkaido University)
  • Published : 2009.12.31


Although beneficial effects of dietary plant proteins on lipid metabolism are well documented, not much information exists on the influence of different seafood proteins on the lipid metabolism. The present study evaluated the effect of 2 marine proteins (tuna protein and scallop ovary proteins) in comparison to casein and soy protein in male Wistar rats. The concentration of total lipids in the plasma of rats fed experimental diets was significantly lower from that of control (278.2 mg/dL) group (p<0.05); and, the liver lipid content was not significantly different (p>0.05). Fecal excretion of cholesterol and bile acids was significantly higher in marine proteins and soy protein fed groups compared to casein only fed control (6.1 and 6.4 mg/day, respectively) group (p<0.05). No significant differences were observed in the mRNA concentrations of different transcriptional factors (p>0.05).


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