![]() ![]() The majority of individuals in Western countries fail to adequately meet daily nutritional requirements and, in Canada alone, over 55 % of individuals fail to consume the recommended one to two servings of fish per week (, 1, 2 ). New regulatory mandates need to be introduced to ensure that all n-3 PUFA products, used as nutritional supplements, regardless of their formulation or delivery form, can be tested for oxidative safety and compliance.Īn n-3 (omega-3) deficiency is a growing nutritional concern for many Western countries. Consumers may be at risk of exposure to higher levels of oxidative products. Markers of oxidation did not differ between n-3 PUFA supplement concentration quartiles. Encapsulated products without flavour additives had significantly lower secondary and TOTOX levels than bulk oils and flavoured products ( P 0♰5), with the exception of krill oil products having higher secondary oxidation levels than plant-based products ( P > 0♰5). Another 18 % of products were approaching the limits with 1–3 years before expiration. Of the products successfully tested, 50 % exceeded the voluntary recommended levels for markers of oxidation. Comparisons between supplements’ final forms, oil source and n-3 PUFA concentration quartiles, as measures of product formulations and delivery forms, were compared using ANOVA. Primary and secondary oxidation and total oxidation (TOTOX) were determined using the American Oil Chemists’ Society (AOCS) procedures. A total of 171 North American over-the-counter n-3 PUFA nutritional supplements were analysed for oxidation safety. The aim of the present study was to evaluate the oxidation status of North American n-3 (omega-3) PUFA nutritional supplements commercially available in Canada and evaluate the influence of product formulation and delivery form on oxidative safety. ![]()
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