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Saturated Branched Chain, Normal Odd-Carbon-Numbered, and n-3 (Omega-3) Polyunsaturated Fatty Acids in Freshwater Fish in the Northeastern United States

Saturated Branched Chain, Normal Odd-Carbon-Numbered, and n-3 (Omega-3) Polyunsaturated Fatty Acids in Freshwater Fish in the Northeastern United States

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WANG, Dong Hao, James R. JACKSON, Cornelia TWINING, Lars G. RUDSTAM, Emily ZOLLWEG-HORAN, Clifford KRAFT, Peter LAWRENCE, Kumar KOTHAPALLI, Zhen WANG, J. Thomas BRENNA, 2016. Saturated Branched Chain, Normal Odd-Carbon-Numbered, and n-3 (Omega-3) Polyunsaturated Fatty Acids in Freshwater Fish in the Northeastern United States. In: Journal of Agricultural and Food Chemistry. American Chemical Society (ACS). 64(40), pp. 7512-7519. ISSN 0021-8561. eISSN 1520-5118. Available under: doi: 10.1021/acs.jafc.6b03491

@article{Wang2016Satur-51810, title={Saturated Branched Chain, Normal Odd-Carbon-Numbered, and n-3 (Omega-3) Polyunsaturated Fatty Acids in Freshwater Fish in the Northeastern United States}, year={2016}, doi={10.1021/acs.jafc.6b03491}, number={40}, volume={64}, issn={0021-8561}, journal={Journal of Agricultural and Food Chemistry}, pages={7512--7519}, author={Wang, Dong Hao and Jackson, James R. and Twining, Cornelia and Rudstam, Lars G. and Zollweg-Horan, Emily and Kraft, Clifford and Lawrence, Peter and Kothapalli, Kumar and Wang, Zhen and Brenna, J. Thomas} }

eng Twining, Cornelia Kraft, Clifford Wang, Dong Hao Zollweg-Horan, Emily Kraft, Clifford 2020-11-17T09:41:14Z Wang, Dong Hao Rudstam, Lars G. terms-of-use Kothapalli, Kumar Lawrence, Peter Kothapalli, Kumar Lawrence, Peter 2016 Brenna, J. Thomas The fatty acid profiles of wild freshwater fish are poorly characterized as a human food source for several classes of fatty acids, particularly for branched chain fatty acids (BCFA), a major bioactive dietary component known to enter the US food supply primarily via dairy and beef fat. We evaluated the fatty acid content of 27 freshwater fish species captured in the northeastern US with emphasis on the BCFA and bioactive polyunsaturated fatty acids (PUFA) most associated with fish, specifically n-3 (omega-3) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Mean BCFA content across all species was 1.0 ± 0.5% (mean ± SD) of total fatty acids in edible muscle, with rainbow smelt (Osmerus mordax) and pumpkinseed (Lepomis gibbosus) the highest at >2% BCFA. In comparison, EPA + DHA constituted 28% ± 7% of total fatty acids. Across all fish species, the major BCFA were iso-15:0, anteiso-15:0, iso-16:0, iso-17:0 and anteiso-17:0. Fish skin had significantly higher BCFA content than muscle tissues, at 1.8% ± 0.7%, but lower EPA and DHA. Total BCFA in fish skins was positively related with that in muscle (r2 = 0.6). The straight chain saturates n-15:0 and n-17:0 which have been identified previously as markers for dairy consumption were relatively high with means of 0.4% and 0.6%, respectively, and may be an underappreciated marker for seafood intake. Consuming a standardized portion, 70 g (2.5 oz), of wild freshwater fish contributes only small amounts of BCFA, 2.5-24.2 mg, to the American diet, while it adds surprisingly high amounts of EPA + DHA (107 mg to 558 mg). Wang, Zhen 2020-11-17T09:41:14Z Jackson, James R. Twining, Cornelia Jackson, James R. Wang, Zhen Saturated Branched Chain, Normal Odd-Carbon-Numbered, and n-3 (Omega-3) Polyunsaturated Fatty Acids in Freshwater Fish in the Northeastern United States Rudstam, Lars G. Zollweg-Horan, Emily Brenna, J. Thomas

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