Procedure for testing vanaspati and rancidity in ghee, Biology

Assignment Help:

Procedure for testing Presence of Vanaspati and Rancidity in Ghee?

Carry out the steps enumerated herewith for conducting this exercise.

For Vanaspati Checking:

1. Take 5 ml of ghee in a stoppered test tube.

2. Add 5 ml of concentrated HCl and shake.

3. Add 5 ml of 2% furfural solution and shake. Observe for the colour in acid layer.

4. Development of pink colour in acid layer indicates the presence of vanaspati.

Rancidity Test:

1. Take 5 ml of melted ghee in a test tube.

2. Add 5 ml of concentrated HCl and shake.

3. Add 1 ml of 0.1% Phloroglucinol and observe for development of a colour. If pink colour develops, it is a positive test, i.e., ghee is rancid.


Related Discussions:- Procedure for testing vanaspati and rancidity in ghee

Aesthetic and recreational significance - wildlife, Aesthetic and Recreatio...

Aesthetic and Recreational Significance - Wildlife Many wild species are a source of beauty, wonder; joy, and recreational pleasure for large number of people. Observing leave

Definition of infective endocarditis, Infective endocarditis (IE) is a micr...

Infective endocarditis (IE) is a microbial infection of the endothelial surface of the heart. The characteristic lesion, the vegetation, is a variably sized amorphous mass of plate

Female reproductive system - graffian follicle, GRAFFIAN FOLLICLE - ...

GRAFFIAN FOLLICLE - It appears as knob or stigma in medulla. It is round, discovered by Graff. It is covered by 2 layers - thecae externa & theca interna. From theca i

Apsirin determination, Indirect determination: By determining the weight...

Indirect determination: By determining the weight of the filler on the dried filter paper you can calculate the weight of aspirin in each tablet: weight of acetylsalicylic ac

What is recombination frequency, What is recombination frequency? Recom...

What is recombination frequency? Recombination frequency, or crossing over rate, is the percentage of recombinant gametes made by crossing over (in relation to the number of pa

Define iodothyronine deiodinases - functions of selenium, Define Iodothyron...

Define Iodothyronine Deiodinases - functions of selenium in humans? Another group of selenoproteins are the iodothyronine deiodinases essential for the conversion of thyroxine

What is trna structure , Transfer  RNA  (tRNA)  molecules  play  an  very s...

Transfer  RNA  (tRNA)  molecules  play  an  very significant  role  in  protein  synthesis. Each tRNA becomes covalently bonded to a particular amino acid  to  create  aminoacyl- t

Discuss the concept of alpha-islet cells of the pancreas, Glycogen A. p...

Glycogen A. production in the liver increases in response to an increase in blood plasma levels of glucagon. B. is secreted by alpha-islet cells of the pancreas. C. bindi

Pulmonary valvotomy with infundibular resection, Pulmonary Valvotomy with I...

Pulmonary Valvotomy with Infundibular Resection :  Infundibular obstruction in cases of pulmonary valvar stenosis could be primary or secondary. 11' this obstruction is signi

Calculate the electric field at a point midway, Three charges are at the co...

Three charges are at the corners of an equilateral triangle, as shown in the figure below. Calculate the electric field at a point midway between the two charges on the x-axis. (Le

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