Dietary stearidonic acid is a long chain (n-3) polyunsaturated fatty acid with potential health benefits

Abstract

The therapeutic and health-promoting effects of (n-3) long-chain PUFA (LCPUFA) from fish are well known, although these same benefits may not be shared by their precursor, αnic acid (ALA). World-wide agencies and scientific organizations i.e. FDA, AHA, International Society for the Study of Fatty Acids and Lipids, Institute of Medicine, WHO, etc.) have made imilar dietary recommendations for (n-3) LCPUFA; however, due to concerns regarding the safety of consuming fish, lternative sources of (n-3) LCPUFA are being investigated. One such lipid is tearidonic cid (SDA), a naturally occurring (n-3) UFA that may have similar biological properties to eicosapentaenoic acid (EPA), a major (n-3) PUFA in fish oil. Existing and ovel plant sources rich in SDA are being cultivated and promoted as potential alternatives to marine-based (n-3) PUFA. This critical review provides a direct comparison of SDA with other dietary (n-3) PUFA under similar experimental conditions. The comparative results suggest that SDA shares many of the biological effects of (n-3) LCPUFA and functions most similarly to dietary EPA compared with ALA when consumed in a typical Western diet. Therefore, although SDA may not replace fish as a major dietary source of (n-3) LCPUFA, it could become a prominent surrogate for EPA in the commercial development of foods fortified with (n-3) PUFA. © 2009 American Society for Nutrition.