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

Albert BB, Derraik JG, Cameron-Smith D, Hofman PL, Tumanov S, Villas-Boas SG, Garg ML, Cutfield WS - Sci Rep (2015)

Bottom Line: 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.Surprisingly, best-before date, cost, country of origin, and exclusivity were all poor markers of supplement quality.

View Article: PubMed Central - PubMed

Affiliation: Liggins Institute, University of Auckland, Auckland, New Zealand.

ABSTRACT
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 <67%. 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. Surprisingly, best-before date, cost, country of origin, and exclusivity were all poor markers of supplement quality.

Show MeSH
The association between missing EPA + DHA (i.e. label claimed minus actual content) and both anisidine value (AV) and Totox. AV and Totox data have been log-transformed.
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f3: The association between missing EPA + DHA (i.e. label claimed minus actual content) and both anisidine value (AV) and Totox. AV and Totox data have been log-transformed.

Mentions: There was an observed association between the missing EPA + DHA (i.e. label claimed minus actual content) and both AV (r = 0.45; p = 0.011) and Totox (r = 0.35; p = 0.053) (Figure 3). Missing EPA + DHA content was not associated with PV (r = 0.06; p = 0.75).


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

Albert BB, Derraik JG, Cameron-Smith D, Hofman PL, Tumanov S, Villas-Boas SG, Garg ML, Cutfield WS - Sci Rep (2015)

The association between missing EPA + DHA (i.e. label claimed minus actual content) and both anisidine value (AV) and Totox. AV and Totox data have been log-transformed.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4300506&req=5

f3: The association between missing EPA + DHA (i.e. label claimed minus actual content) and both anisidine value (AV) and Totox. AV and Totox data have been log-transformed.
Mentions: There was an observed association between the missing EPA + DHA (i.e. label claimed minus actual content) and both AV (r = 0.45; p = 0.011) and Totox (r = 0.35; p = 0.053) (Figure 3). Missing EPA + DHA content was not associated with PV (r = 0.06; p = 0.75).

Bottom Line: 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.Surprisingly, best-before date, cost, country of origin, and exclusivity were all poor markers of supplement quality.

View Article: PubMed Central - PubMed

Affiliation: Liggins Institute, University of Auckland, Auckland, New Zealand.

ABSTRACT
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 <67%. 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. Surprisingly, best-before date, cost, country of origin, and exclusivity were all poor markers of supplement quality.

Show MeSH