Marine oils contain health beneficial nutrients such as omega-3 fatty acids and vitamin D, but unrefined marine oils may also contain elevated levels of fat soluble contaminants such as pesticides. Since Norway is the largest importer of marine oils from other countries and a major producer of refined marine oils, it is important for Norway to be able to determine the authenticity of the oils. The aim of this study was to determine the levels of organohalogen pesticides in the authentic unrefined marine oils of different marine species to investigate if the pesticide residues in the samples could be used to distinguish between the oil types. The sum of pesticides in the samples ranged from below the limit of quantification of the method to several hundred ng/g. Different oil types displayed groupings in principal component analysis. The potential use of pesticide profile in marine oils for authentification purposes will be discussed.

Levels of pesticides in marine oils and potential use of pesticide profile for authentification purposes

248th National Meeting (2014)

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