Evaluate percentage fat content in milk, Chemistry

Assignment Help:

Q. Evaluate percentage Fat Content in Milk?

The fat content in milk can be determined through various procedures as:

Direct determination of fat by extraction with ether - Adam's coil method

  • Separation of fat by acid/ alkali treatment and its subsequent removal by ether-Werner-Schimdt and Gottleib method
  • Separation of fat by chemical means followed by centrifugation - Gerber method

The main principle behind the fat determination is  protein precipitation, which is further dissolved in acid to free fat globules. In some methods, amyl alcohol is also added to produce difference in the surface tension of fat globules and the supporting liquid, thus causing the aggregation and separation of fat.

As Gerber method gives fast results, thus, it is used in the dairy plants as a platform test for checking the quality of milk. In this test, fat is dissolved in hot amyl alcohol and its separation from heavy acid solution is affected by subjecting the mixture to centrifuging. In Gerber method, 10 ml of conc. H2SO4 is added into the gerber tube. 1 ml of amyl alcohol is added in this tube. 10.94 ml of the milk sample is added and the tube is stoppered. The tube is then inverted twice or thrice and shaken briskly to mix the ingredients. The tube is then centrifuged for 3 min at 1000 rpm to get the reading of fat in the stem of the tube.


Related Discussions:- Evaluate percentage fat content in milk

Describe about atomic number, Q. Describe about atomic number? It is si...

Q. Describe about atomic number? It is significant to be able to obtain useful information from the periodic table. Beginning with the simplest element hydrogen the periodic ta

#title. chemical bonding., sometimes we put a coordinate bond or sometimes ...

sometimes we put a coordinate bond or sometimes we put a double bond in between s and a nonprotonated o atom in the structure of h2so4.is there any diifference in between these two

Metal nitrosyls, what r metal nitrosyls and metallocenes

what r metal nitrosyls and metallocenes

Antimicrobials - chemistry in action, Antimicrobials: These are the ch...

Antimicrobials: These are the chemical substances employed to cure infections because of micro-organisms. These are as well known as microbes. Any creature that causes disease

First use quantum theory to explain the structure of atom, The first use o...

The first use of quantum theory to explain the structure of atom was made by: (1)  Heisenberg (2 )Bohr (3) Planck (4) Einstein Ans: Bohr

Electron, electron partic;e moving as awave

electron partic;e moving as awave

Illustrate the physical property of matter, Q. Illustrate the physical prop...

Q. Illustrate the physical property of matter? A physical property of a substance is a quality that can be observed and measured without changing the composition of the subst

Find the d-orbital splitting, In order to find the d-orbital splitting in a...

In order to find the d-orbital splitting in a square planar complex, it is easier to start with an octahedral compound where splitting patterns are known and then imagine slowly m

The electronic configuration of an element with atomic no., The electronic ...

The electronic configuration of an element with atomic number 7  i.e. nitrogen atom is; (1) 1s 2 , 2s 1 , 2p 3 x                               (2)  1s 2 , 2s 2 , 2p 2 x ,

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