Linolenic acid is a type of naturally-occurring
fatty acid
In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with an aliphatic chain, which is either saturated or unsaturated. Most naturally occurring fatty acids have an unbranched chain of an even number of carbon atoms, ...
. It can refer to either of two
octadecatrienoic acid
An octadecatrienoic acid is a chemical compounds with formula , a polyunsaturated fatty acid with whose molecule has an 18-carbon unbranched backbone with three double bonds.
The name refers to many different structural and conformational isomer ...
s (i.e. with an 18-carbon chain and three double bonds, which are found in the ''
cis'' configuration), or a mixture of the two.
Linolenate (in the form of
triglyceride
A triglyceride (TG, triacylglycerol, TAG, or triacylglyceride) is an ester derived from glycerol and three fatty acids (from ''wikt:tri-#Prefix, tri-'' and ''glyceride'').
Triglycerides are the main constituents of body fat in humans and other ...
ester
In chemistry, an ester is a compound derived from an oxoacid (organic or inorganic) in which at least one hydroxyl group () is replaced by an alkoxy group (), as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides a ...
s of linolenic acid) is often found in vegetable oils; traditionally, such fatty acylates are reported as the fatty acids:
*
α-Linolenic acid
''alpha''-Linolenic acid (ALA), also known as α-Linolenic acid (from Greek language, Greek ''alpha'' meaning "first" and ''linon'' meaning flax), is an omega-3 fatty acid, ''n''−3, or omega-3, essential fatty acid. ALA is found in many seeds ...
, an
omega-3
Omega−3 fatty acids, also called Omega-3 oils, ω−3 fatty acids or ''n''−3 fatty acids, are polyunsaturated fatty acids (PUFAs) characterized by the presence of a double bond, three atoms away from the terminal methyl group in their chem ...
(n-3) fatty acid
*
γ-Linolenic acid, an
omega-6
Omega-6 fatty acids (also referred to as ω-6 fatty acids or ''n''-6 fatty acids) are a family of polyunsaturated fatty acids that have in common a final carbon-carbon double bond in the ''n''-6 position, that is, the sixth bond, counting from ...
(n-6) fatty acid
See also
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Linoleic acid
Linoleic acid (LA) is an organic compound with the formula COOH(CH2)7CH=CHCH2CH=CH(CH2)4CH3. Both alkene groups are ''cis''. It is a fatty acid sometimes denoted 18:2 (n-6) or 18:2 ''cis''-9,12. A linoleate is a salt or ester of this acid.
...
, a similarly named fatty acid
References
{{chemistry index
Alkenoic acids
Aromatase inhibitors
Fatty acids
Essential fatty acids
Essential nutrients