Omega-3 Fatty Acids and Total Polychlorinated Biphenyls in 26 Dietary Supplements

Authors

  • S.M. Shim,

    1. Authors Shim, Santerre, and Burgess are with the Dept. of Foods and Nutrition, Purdue Univ., Stone Hall Rm. 205, 700 W. State St., West Lafayette, Ind. 47907-2059. Author Deardorff is with Strategic Diagnostics, Inc., Newark, DE19702. Direct inquiries to uthor Santerre (E-mail: santerre@purdue.edu).
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  • C.R. Santerre,

    1. Authors Shim, Santerre, and Burgess are with the Dept. of Foods and Nutrition, Purdue Univ., Stone Hall Rm. 205, 700 W. State St., West Lafayette, Ind. 47907-2059. Author Deardorff is with Strategic Diagnostics, Inc., Newark, DE19702. Direct inquiries to uthor Santerre (E-mail: santerre@purdue.edu).
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  • J.R. Burgess,

    1. Authors Shim, Santerre, and Burgess are with the Dept. of Foods and Nutrition, Purdue Univ., Stone Hall Rm. 205, 700 W. State St., West Lafayette, Ind. 47907-2059. Author Deardorff is with Strategic Diagnostics, Inc., Newark, DE19702. Direct inquiries to uthor Santerre (E-mail: santerre@purdue.edu).
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  • D.C. Deardorff

    1. Authors Shim, Santerre, and Burgess are with the Dept. of Foods and Nutrition, Purdue Univ., Stone Hall Rm. 205, 700 W. State St., West Lafayette, Ind. 47907-2059. Author Deardorff is with Strategic Diagnostics, Inc., Newark, DE19702. Direct inquiries to uthor Santerre (E-mail: santerre@purdue.edu).
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  • The authors wish to thank Purdue Univ. Agricultural Research Programs for partially funding this research. This research was also supported through a cooperative agreement with the USDA, Agricultural Research Service Program project number 1935-42000-035. We would also like to thank Strategic Diagnostics, Inc. for providing ELISA kits and Cheryl Schaul and Joanne Lasrado for providing lab assistance.

Abstract

ABSTRACT: A limited sampling and analysis of commercial supplements found 51% to 124% eicosapentaenoic acid (EPA) and 61% to 153% docosahexaenoic acid (DHA) as provided on product labels. Daily intakes of EPA plus DHA from label recommendations would provide 123% to 1087% of the adequate intake (AI) for pregnant and lactating women (that is, 0.13 to 0.14 g/day) and up to 43% of the daily reference dose (RfD) for polychlorinated biphenyls (PCB) for a 60-kg person. However, if a smaller dose of the supplements were taken to meet the AI, only 0.9% to 11.5% of the RfD for PCB would be obtained. Algal oil supplements did not have detectable PCB residues, but those products only provided DHA and not EPA.

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