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

Volatile liquid, volatile liquid is placed in a open container for 15 minut...

volatile liquid is placed in a open container for 15 minutes should you expect its mas to

Uses of aluminium, Q. Uses of Aluminium? Aluminium exhibits useful prop...

Q. Uses of Aluminium? Aluminium exhibits useful properties of low density, high thermal and electrical conductivity, and good corrosion resistance with non-toxic nature of the

PERIODIC TABLE, LIST METALIC AND NON METALIC ELEMENTS

LIST METALIC AND NON METALIC ELEMENTS

What is function group, An atom or group of atoms, which verify the charact...

An atom or group of atoms, which verify the characteristic properties of the Substance it, is known as functional group.

Show diffrent type of ligands, Q. Show diffrent type of Ligands? Ligand...

Q. Show diffrent type of Ligands? Ligands which contain one donor atom are called monodentate the donor atom may contain One or  more than one lone pairs of electrons. The l

Bohr model, bohr model for hydrogen atom?

bohr model for hydrogen atom?

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