89A-20 |
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Y. C. CHEN1, J. Nguyen1, K. Semmens2, S. K. Beamer1, and J. Jaczynski1. (1) Div. of Animal & Veterinary Sciences, West Virginia Univ., PO Box 6108, Morgantown, WV 26506-6108, (2) Center for Agricultural & Natural Resources Development, West Virginia Univ., 1052 Agricultural Sciences Bldg., PO Box 6108, Morgantown, WV 26506-6108 The American Heart Association recommends that people eat fish twice a week, especially those fish with high concentration of &omega-3 fatty acids (&omega-3 FA). The &omega-3 FA found in fish oils are eicosapentaenoic acid (EPA) and docosahexaenoic acids (DHA), while that found in plants is &alpha-linolenic acid (&alpha-LNA). The &alpha-LNA can be converted by fish to EPA and DHA via enzymatic elongation and desaturation. Therefore, supplementation of fish diet with the plant sources that are high in &omega-LNA may increase the concentration of &omega-3 FA in trout fillets. This study was designed to investigate the effects of flaxseed oil (FO) supplementation on &omega-3 FA and fat contents of trout fillets. The experiment was a completely randomized design. A commercial trout diet was supplemented with 0 (control), 8.5% (w/w), or 15% (w/w) of FO. Trout were harvested on days 0, 30, 60, 90, and 120. Trout were filleted to obtain boneless, skinless butterfly fillets. The moisture and total fat contents, as well as fatty acid profile (FAP) were determined. The data were analyzed statistically using ANOVA. While the moisture and total fat contents of fillets were not affected by FO supplementation, the FAP was. The highest &omega-3 FA content in fillets was determined in the 15% of FO supplementation group, followed by the 8.5% of FO supplementation group and the control group. While the 15% and 8.5% of FO supplementation increased concentration of &alpha-LNA in fillets, the EPA and DHA contents remained unchanged. Our results indicate that the omega-3-enhanced trout can be raised by supplementing fish diets with FO. We also conducted a storage stability study and human clinical trials using the developed omega-3-enhanced trout fillets.
Session 89A, Aquatic Food Products: General
2005 IFT Annual Meeting, July 15-20 - New Orleans, Louisiana |