Evaluation of n-3 polyunsaturated fatty acid content in various foods: health impact assessment
The aim of the present study is to check if food declared as n-3 fatty acids (FAs) and evaluate its effect on human health. All tested samples were labeled as n-3 FAs: chicken, fish oil, shell fish, capsule oil concentrate, egg, dog food, cold smoked mackerel, iced seafood, iced squid, iced hake, salmon iced and sardine samples were evaluated for their contribution to the total n-3 FA amount and n-6 to n-3 FA ratio in relation to European regulations. Extraction of lipids from the samples and capillary gas chromatography with flame ionization detection were performed. An intake of 250 mg per day of eicosapentaenoic acid plus docosahexanoic acid (EPA + DHA) to be sufficient for primary prevention in healthy subject fulfills dog’s food, shell fish, seafood iced, squid iced, salmon iced, fish oil, capsule oil concentrate, mackerel cold smoked and sardine. European regulation defines the high n-3 FAs as food that contains at least 0.6 g/100 g of α-linolenic acid (ALA) or at least 80 mg/100 g EPA+DHA. This first fulfills linseed oil and fish oil. This last fulfills food for dogs, shell fish, seafood iced, squid iced, hake iced, salmon iced, sardine, mackerel cold smoked, capsule oil concentrate and fish oil. The last favorable were samples of eggs and chicken. A lower ratio of omega-6/omega-3FAs is needed for the prevention and management of chronic diseases.The results obtained should be of importance for the establishment of tables for nutritional value of products.