What do you mean by acid value and free fatty acids, Chemistry

Assignment Help:

Q. What do you mean by Acid Value and Free Fatty Acids?

Acid value is a measure of hydrolytic rancidity present in the sample of oil/fat. It reflects the state of freshness or deterioration of the material and also the quantity of glycerols to be released as a result of neutralization of fat/oil. It has a wide implication in the oil refining industry as it gives the fair idea of the state of oil/fat and also the total quantity of alkali required to neutralize a particular batch of oil or fat to make it suitable for the purpose of hydrogenation. Acidity also helps in predicting the quantity of oil or fat, which will pass into soap stock as a compulsive by-product of the refining process.

High acidity oils or fats produce excess smoke during heating. Moisture content, temperature of heating, duration of heating, type of metal container are parameters which act as catalysts to the process of hydrolysis in fats or oils.

Acidity is expressed as FFA% on oleic acid basis like in ghee. However, in certain oils and fats it is expressed on the basis of the fatty acids which are predominant. For example, castor oil which has 86-94% recinoleic acid, coconut oil having its fatty


Related Discussions:- What do you mean by acid value and free fatty acids

How are mixed ferrites prepared for industrial uses, What are ferrox cubes ...

What are ferrox cubes and ferrites? How are mixed ferrites prepared for industrial uses? Give an account of applications of ferrites pointing out their advantages over a ferromagne

Nomenclature of Spiro compounds, names for : A , B , C , D , E , F ,..........

names for : A , B , C , D , E , F ,..........., X , Y , Z .

Liquid propellants - monopropellants and bipropellants, Liquid propellants ...

Liquid propellants - Monopropellants and Bipropellants These contain an oxidizer like liquid oxygen, nitrogen tetroxide (N 2 O 2 ) or nitric acid and a fuel for example alcohol

Problem, The diffraction of x-ray by a crystal gives 1st order ref at 14•12...

The diffraction of x-ray by a crystal gives 1st order ref at 14•12'' if lattice dist is 3.14 A• wht is the wavelength of x-ray

Iupac system of naming organic compounds, IUPAC System of Naming Organic Co...

IUPAC System of Naming Organic Compounds In the IUPAC (International Union of Pure and Applied Chemistry) system, the name of an organic compound contain three parts that are:

Group1, excration of group1 from its materials

excration of group1 from its materials

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd