fatty acid

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fatty acid,

any of the organic carboxylic acids present in fats and oilsfats and oils,
group of organic substances that form an important part of the diet and also are useful in many industries. The fats are usually solid, the oils generally liquid at ordinary room temperatures.
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 as esters of glycerolglycerol,
 glycerin,
 glycerine,
or 1,2,3-propanetriol
, CH2OHCHOHCH2OH, colorless, odorless, sweet-tasting, syrupy liquid. Glycerol is a trihydric alcohol. It melts at 17.
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. Molecular weights of fatty acids vary over a wide range. The carbon skeleton of any fatty acid is unbranched. Some fatty acids are saturated, i.e., each carbon atom is connected to its carbon atom neighbors by single bonds; and some fatty acids are unsaturated, i.e., contain at least one carbon-carbon double bond (see chemical bondchemical bond,
mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the formation of an aggregate with sufficient stability to be regarded as an
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). When fats and oils are hydrolyzed with an alkali, the fatty acids are liberated as their metal salts; these salts are soaps. Butyric acidbutyric acid
or butanoic acid
, CH3CH2CH2CO2H, viscous, foul-smelling, liquid carboxylic acid; m.p. about −5°C;; b.p. 163.5°C;. It is miscible with water, ethanol, and ether.
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 is a fatty acid found in butter.

fatty acid

[¦fad·ē ′as·əd]
(organic chemistry)
An organic monobasic acid of the general formula Cn H2 n + 1COOH derived from the saturated series of aliphatic hydrocarbons; examples are palmitic acid, stearic acid, and oleic acid; used as a lubricant in cosmetics and nutrition, and for soaps and detergents.

fatty acid

1. any of a class of aliphatic carboxylic acids, such as palmitic acid, stearic acid, and oleic acid, that form part of a lipid molecule
2. another name for carboxylic acid esp a naturally occurring one
References in periodicals archive ?
Rothman, "The Free Fatty Acids of Human Hair Fat," Journal of the American Chemical Society, vol.
Free fatty acid. Free fatty acid of the oil samples varied between 2.95 and 12.06% (Table 1).
Free fatty acids and total polar compounds (TPC) were calculated following the procedure of AOAC (2000) [29].
The aim of this research is the investigation of the influence of free fatty acids, provided by LUBRIZOL Company, on the lubrication properties of rapeseed oil.
Moreover, when the raw material contains a high content of water and free fatty acids, as is the case for waste frying oils, the yield and quality of biodiesel decrease because of the orientation of the reaction to other adverse reactions [21].
Undesirable materials such as free fatty acid, peroxides and color pigments have negative influence on physicochemical properties, sensory characteristics and storage stability of the oil.
Chen, "Measurement of plasma glucose, free fatty acid, lactate, and insulin for 24 h in patients with NIDDM," Diabetes, vol.
Ahanger, "Plasma free fatty Acid concentrations as a marker for acute myocardial infarction," Journal of Clinical and Diagnostic Research, vol.
Waste oils and fats unfortunately contain free fatty acids, which must be removed by refining or esterification.
Free fatty acid was analysed by weighing 5g of a well-mixed melted fat sample and adding (25ml) of 95% Ethanol/Ether (1:1).
The ENSEL technology uses a solid catalyst that combines esterification of high free fatty acid feedstocks and transesterification of triglycerides into a single step, which eliminates waste, improves process efficiency and expands feedstock options.
On the other hand, the free fatty acid theory proposes that excessive mobilization of free fatty acids leads to severe vasculitis that is secondary to its histotoxic effects.[sup][2] CFE can be present without pulmonary effects; potentially due to the fact that smaller globules may traverse the pulmonary microvasculature and reach the systemic circulation; alternatively, CFE may be caused by fat globules via the patent foramen ovale.[sup][3] Three patients went into a coma shortly after the fracture and remained comatose at the 3-month follow-up.