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Bulletin of the IDF N° 428/ 2008: Determination of omega-3 and omega-6 fatty acid content by gas-liquid chromatography in milk fat from Enriched products - Interlaboratory collaborative studies

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published date 24 March 2008
reference Bulletin of the IDF No. 428/2008

Publication description

Omega-3 and omega-6 fatty acids have been shown to lower the risk of coronary heart disease. As a result, milk and different dairy products, including infant formula, supplemented with or naturally enriched in omega-3 fatty acids, are now available on the market. A reliable method to evaluate the real content of these nutrients has been standardized. A pilot study was conducted to identify and resolve problems connected with the determination of omega-3 fatty acids in milk enriched with marine oil. A full international collaborative study, including both omega-3 and omega-6 fatty acids, was carried out establishing the precision (repeatability, r, and reproducibility, R) of the methods. In this paper, the results of the pilot study as well as those of the full international collaborative study are reported.

Keywords: analysis, enriched, fat, fatty acid, gas-liquid chromatography, international collaborative study, milk, milk fat, omega-3, omega-6, pilot, precision, repeatability, standard

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