Linolenic Acid

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linolenic acid

[¦lin·ə¦lin·ik ′as·əd]
C17H29COOH One of the principal unsaturated fatty acids in plants and an essential fatty acid in animal nutrition; a colorless liquid that boils at 230°C (17 mmHg or 2266 pascals), soluble in many organic solvents; used in medicine and drying oils. Also known as 9,12,15-octadecatrienoic acid.

Linolenic Acid


a monobasic carboxylic acid with three isolated double bonds, CH3(CH2CH=CH)3(CH2)7COOH; a colorless oily liquid. Boiling point, 184°C (at 532 newtons per sq m, or 4 mm of mercury); density, 0.905 g/cm3 at 20°C. Linolenic acid belongs to the category of irreplaceable fatty acids; it exists in triglyceride form in many vegetable oils—for example, linseed (up to 30 percent), perilla (up to 55 percent), hemp, and soy.

References in periodicals archive ?
An adequate daily intake for adults of alpha-linolenic acid has been established by the U.
Eicosapentaenoic and Docosapentaenoic Acids are the Principal Products of Alpha-Linolenic Acid Metabolism in Young Men," British Journal of Nutrition 88(4), 355-363 (2002).
This suggests that conversion rates of alpha-linolenic acid to DHA and EPA may be higher than would be predicted from earlier studies.
Back in 1994, the scientific community was stunned by a study that linked high blood levels of alpha-linolenic acid with an increased risk of prostate cancer.
The best sources of omega 3 alpha-linolenic acid include flaxseed (linseed) oil, rapeseed oil, chia seeds, walnuts and walnut oil, the Mediterranean plant purslane, grass-reared meat and dark-green leafy vegetables.
There are 20 different types of essential fatty acids (EFAs) that the human body requires for optimum health; humans manufacture all but two: Omega-3 alpha-linolenic acid (ALA) and Omega-6 linolenic acid, the sources of which come from nutrients in our foods.
They are also high in healthy polyunsaturated fats such as omega-3 alpha-linolenic acid.
Careful evaluation of recent evidence, however, suggests that allowing a health claim for vegetable oils rich in omega-6 linoleic acid but relatively poor in omega-3 alpha-linolenic acid may not be warranted," Drs.
While the good news about omega-3s is widespread, what many people don't realize is that there are two major types: the long chain omega-3s eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), found in fish and fish oil; and the short-chain form alpha-linolenic acid (ALA), found in walnuts, flax, and some vegetable oils.
Blood samples collected between 1999 and 2001 were analyzed for plasma alpha-linolenic acid and the long-chain omega-3 fatty acids eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA), and docosahexaenoic acid (DHA).
In addition, high linoleic acid intake might result in decreased conversion of alpha-linolenic acid (an omega-3 fatty acid) to eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), due to competition for the enzyme, delta-6 desaturase.
Neither low doses of docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), which are found in fish oil, nor of alpha-linolenic acid (ALA), derived from nuts and several vegetable oils, provided any benefit to the vast majority of heart patients.