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Name: Rhonda L.
Status: Educator
Age: 40s
Location: N/A
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Date: N/A 


Question:
What is fatty-acid estrification?



Replies:
A fatty acid is a carboxylic acid (R--CO2H), where R~ 12 to 18 carbon atoms. Esterification if the reaction of an acid, in this case a carboxylic acid with an alcohol, with a typical structure R''--OH, to form an ester as the product (+ H2O). The ester then has the general formula: R--CO2--R".

Fats are esters of fatty acids and glycerol = CH2(OH)--CH(OH)--CH2(OH).

Vince Calder


Hi Rhonda!

Maybe you are talking about organic (as fatty) acids esterification... That is a condensation reaction where carboxylic acids react with alcohols to form esters. When plant or animal tissue ar extracted with a non-polar solvent (as ether, chloroform, benzene) a portion of the material usually dissolves. The components of this soluble fraction are called lipids. Lipids include a wide variety of structural types including Carboxylic acids (or fatty acids) and triacylglycerols(or neutral fats).. It happens that only a small portion of the total lipid fraction consists of free carboxylic acids.Most are found as esters of glyderol, that is triacylglycerols( that is the acids react through esterification with glycerols that are alcohols).

Triacylglycerols are the oils and fats of plant and animal origen, present in common oils as peanut oil, olive oil and so on. In older literature ( and mostly in medicine triacylgycerols are referred as triglycerides.

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Mabel
(Dr. Mabel Rodrigues)



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