Explain procedure for determination of the quality of milk, Biology

Assignment Help:

Explain Procedure for Determination of the Quality of Milk?

1. Prepare methylene blue solution by dissolving 1 mg methylene blue in 250 ml of sterile distilled water.

2. After thorough mixing, transfer 10 ml of each sample into labeled sterile screw cap test tubes and add 1 ml of methylene blue in each tube. For control, take 10 ml boiled milk of each sample and add 1ml of methylene blue (positive control). Negative control contains 10 ml of milk sample and 1 ml of the water.

3. Close the tubes with stoppers and mix the content of the tubes by inverting the tubes gently for 4-5 times.

4. Incubate the tubes in a water bath at 37°C for 6-8 hours. Observe the tubes for reduction of methylene blue (i.e. change in colour) after every half an hour for 6-8 hours. Compare the sample tube with positive and negative control for change in methylene blue colour.

Record the time of dye reduction and accordingly assess the quality of the milk samples.


Related Discussions:- Explain procedure for determination of the quality of milk

What is the gross primary production of an ecosystem, Q. What is the gross ...

Q. What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis? The Gross primary production of a GPP or ecosystem is the quantity of organic ma

Cell, the s phase of interface is important and a cell can newer divide wit...

the s phase of interface is important and a cell can newer divide without it justify?

Clinical manifestations of maple syrup urine disease, Q. Clinical manifesta...

Q. Clinical manifestations of maple syrup urine disease? Clinical manifestations are expressed upon protein loading or with febrile illness. In most severely impaired enzyme de

What treatment should be used for cardiac tamponade, Q. What Treatment shou...

Q. What Treatment should be used for cardiac tamponade? Percutaneous Pericardiocentesis Cardiac tamponade is an acute emergency and percutaneous pericardiocentesis must b

Which hormones secreted by adrenal medulla, Q. What are the hormones secret...

Q. What are the hormones secreted by the adrenal medulla? What are their respective functions? The medullary portion of the adrenals secretes hormones of the catecholamine grou

Subcellular particle, Name the subcellular particle where the electron tran...

Name the subcellular particle where the electron transport chain is located. Mitochondria is  the subcellular particle where  the electron transport chain is located.

Define the thin and thick filaments of a sarcomere, When the overlap betwee...

When the overlap between the thin and thick filaments of a sarcomere in a skeletal muscle is decreasing, A. the total length of the I band is increasing in the sarcomere. B.

Explain restrictive cardiomyopathy, Q. Explain Restrictive cardiomyopathy? ...

Q. Explain Restrictive cardiomyopathy? It is a systemic or idiopathic disorder of the myocardium with clinical and hemodynamic features of diastolic dysfunction, closely simula

Soil pollution, Soil is upper crust of earth which support land plants and ...

Soil is upper crust of earth which support land plants and animals. It is defined as addition of substances to the soil, which adversely affect physical, chemical? And biologica

Amphibians - regeneration in vertebrates, Amphibians - Regeneration in Vert...

Amphibians - Regeneration in Vertebrates Newts and salamander show remarkable regenerative ability in larval as well as adult stages. In larval stages except for limbs and tai

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