Everything about Linoleic Acid totally explained
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Linoleic acid (LA) is an unsaturated
omega-6 fatty acid. It is a colorless liquid. In physiological literature, it's called 18:2(n-6). Chemically, linoleic acid is a
carboxylic acid with an 18-carbon chain and two
cis double bonds; the first double bond is located at the sixth carbon from the omega end.
The word
linoleic comes from the
Greek word
linon (
flax).
Oleic means
of, relating to, or derived from oil or
of or relating to oleic acid since removing the omega-6 double bond produces oleic acid.
In Physiology
Linoleic acid is a
polyunsaturated fatty acid used in the biosynthesis of
prostaglandins. It is found in the lipids of
cell membranes. It is abundant in many
vegetable oils, especially
safflower and
sunflower oils.
To be fully utilised by the body, LA must be converted into
gamma-linolenic acid, a reaction catalysed by the
enzyme delta-6-desaturase (D6D).
Linoleic acid is a member of the group of
essential fatty acids called
omega-6 fatty acids, so called because they're an essential dietary requirement for all mammals. The other group of essential fatty acids is the
omega-3 fatty acids, for example
Alpha-linolenic acid. Omega-6 deficiency symptoms include dry hair, hair loss,
and poor wound healing. It is easy to meet the daily requirement for these fatty acids (even for people consuming low fat diets) and most people get plenty of omega-6 fatty acids in their diet by consuming approximately a tablespoon of polyunsaturated plant oils per day.
Industrial uses
Linoleic acid is used in making
soaps,
emulsifiers, and quick-drying oils. Reduction of linoleic acid yields
linoleyl alcohol.
Linoleic acid has become increasingly popular in the beauty products industry because of its beneficial properties on the skin. Research points to linoleic acid's affective properties when applied topically on the skin, ie. anti-inflammatory, acne reduction, moisture retention properties. Noni seed oil is abundant in linoleic acid, and a number of beauty products contain noni seed oil.
Foods
Oils and foods that contain linoleic acid include
safflower oil (78%),
poppy seed oil (70%),
walnut oil, grass fed cow milk,
olive oil,
palm oil,
sunflower oil,
soybean,
lard,
coconut oil,
egg yolks (16%),
spirulina,
peanut oil,
okra,
rice bran oil,
wheat germ oil,
grape seed oil,
macadamia oil,
pistachio oil,
sesame oil.
Further Information
Get more info on 'Linoleic Acid'.
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