Fish oil supplements in New Zealand are highly oxidised and do not meet label content of n-3 PUFA

We evaluated the quality and content of fish oil supplements in New Zealand. All encapsulated fish oil supplements marketed in New Zealand were eligible for inclusion. Fatty acid content was measured by gas chromatography. Peroxide values (PV) and anisidine values (AV) were measured and total oxidat...

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Published in:Scientific reports 2015-01, Vol.5 (1), p.7928-7928, Article 7928
Main Authors: Albert, Benjamin B., Derraik, José G. B., Cameron-Smith, David, Hofman, Paul L., Tumanov, Sergey, Villas-Boas, Silas G., Garg, Manohar L., Cutfield, Wayne S.
Format: Article
Language:English
Subjects:
692/308
692/700
Dietary Supplements - analysis
Docosahexaenoic acid
Docosahexaenoic Acids - analysis
Docosahexaenoic Acids - chemistry
Eicosapentaenoic acid
Eicosapentaenoic Acid - analysis
Eicosapentaenoic Acid - chemistry
Fish
Fish oils
Food Analysis
Food Quality
Gas chromatography
Humanities and Social Sciences
Humans
multidisciplinary
New Zealand
Oxidation
Oxidation-Reduction
Peroxide
Polyunsaturated fatty acids
Science
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description We evaluated the quality and content of fish oil supplements in New Zealand. All encapsulated fish oil supplements marketed in New Zealand were eligible for inclusion. Fatty acid content was measured by gas chromatography. Peroxide values (PV) and anisidine values (AV) were measured and total oxidation values (Totox) calculated. Only 3 of 32 fish oil supplements contained quantities of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) that were equal or higher than labelled content, with most products tested (69%) containing
doi_str_mv 10.1038/srep07928
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The vast majority of supplements exceeded recommended levels of oxidation markers. 83% products exceeded the recommended PV levels, 25% exceeded AV thresholds and 50% exceeded recommended Totox levels. Only 8% met the international recommendations, not exceeding any of these indices. Almost all fish oil supplements available in the New Zealand market contain concentrations of EPA and DHA considerably lower than claimed by labels. Importantly, the majority of supplements tested exceeded the recommended indices of oxidative markers. 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subjects 692/308
692/700
Dietary Supplements - analysis
Docosahexaenoic acid
Docosahexaenoic Acids - analysis
Docosahexaenoic Acids - chemistry
Eicosapentaenoic acid
Eicosapentaenoic Acid - analysis
Eicosapentaenoic Acid - chemistry
Fish
Fish oils
Food Analysis
Food Quality
Gas chromatography
Humanities and Social Sciences
Humans
multidisciplinary
New Zealand
Oxidation
Oxidation-Reduction
Peroxide
Polyunsaturated fatty acids
Science
title Fish oil supplements in New Zealand are highly oxidised and do not meet label content of n-3 PUFA
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