polyunsaturated fatty acid


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Related to polyunsaturated fatty acid: monounsaturated fatty acid, PUFA

polyunsaturated fatty acid

polyunsaturated fat

A saturated fatty acid (i.e., an alkyl-chain fatty acid) with two or more ethylenic carbon–carbon double bonds; because of the double bond, not every carbon is saturated with hydrogen atoms—i.e., there are fewer hydrogens—which reduces the strength of the compound's intermolecular forces, resulting in a significant lowering of the compound’s melting point.

Polyunsaturated fats in humans
• Linoleic PFAs—two double bonds between 9/10 (Δ9) and 12/13 (Δ12); e.g., CnH2n-COOH.
• Linolenic PFAs—three double bonds, Δ9, Δ12, Δ15; e.g., CnH2n-5-COOH.
• 4-doubled bond PFAs—four double bonds, Δ5, Δ8, Δ11, Δ14; e.g., arachidonic acid.
References in periodicals archive ?
Key words: boar, spermatozoa, chemiluminescence, polyunsaturated fatty acids, reactive oxygen species.
Total polyunsaturated fatty acid content, n6 fatty acids specifically, and the PS ratio were inversely associated with the MetS.
Stubbs and Smith (1984) observed that the membrane's fluidity increase is directly related to the amount of polyunsaturated fatty acids present in the blood plasma membrane of cells that will be frozen.
Dietary supplementation with n-3 polyunsaturated fatty acids and vitamin E after myocardial infarction: results of the GISSI-Prevenzione trial.
Research: Omega 3 long-chain polyunsaturated fatty acids (LCPUFAs) affect processes implicated in vascular and neural retinal pathogenesis and thus may influence the risk of developing age-related macular degeneration (AMD).
The researchers attribute their finding to n-6 polyunsaturated fatty acids present in sunflower oil.
Umbilical cord DHA concentrations correlated highly with maternal concentrations, indicating that the fetus depends on the mother's polyunsaturated fatty acid intake.
Aggressive dogs are characterized by low omega-3 polyunsaturated fatty acid status.
Relationship between omega3 long-chain polyunsaturated fatty acid status during early infancy and neurodevelopmental status at 1 year of age.
These findings indicate that the chemopreventive effect of fish oil is due to the direct action of a particular type of polyunsaturated fatty acid, n-3 PUFA.
The research, unveiled at a press conference at the 2004 American Veterinary Medical Association (AVMA) convention in Philadelphia, examined the role DHA -- a long-chain omega-3 polyunsaturated fatty acid -- plays in puppies' neural development by focusing on the puppy's ability to learn.
The task of gradual nutritional intervention to normalize the ECS is accomplished in two ways: 1) consuming an omega-3 fatty acid rich diet that would compete with omega-6 fatty acids for enzymes (desaturase and elongase) in the gastrointestinal tract, and 2) providing omega-3 long chain polyunsaturated fatty acids (i.