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

If comparing brain of vertebrates then relative size would b, In a comparis...

In a comparison of brain found in lower classes of vertebrates to the brain in higher classes of vertebrate's area showing most increase in relative size is: a) Optic lobe b

Epithelial Cells, What are all teh parts of a simple ciliated columnar epit...

What are all teh parts of a simple ciliated columnar epithilial cell?

Function of cholecystokin in the digestive process, Q.How is it produced an...

Q.How is it produced and what is the function of cholecystokin in the digestive process? The fat level of the chyme detected in the duodenum stimulates the secretion of cholecy

Calculate micronutrient and other nutrient requirements, Calculate Micronut...

Calculate Micronutrient and other specific nutrient requirements? The recommended average daily per capita intake of various specific nutrients for typical population requiring

Where smooth muscle may be found in human body, a) Name three parts of the ...

a) Name three parts of the body where smooth (involuntary or unstriated) muscle may be found. b) In any one of your examples, say what the smooth muscle does.

Does thermal inversion occur in the winter or in the summer, Q. Does therma...

Q. Does thermal inversion occur in the winter or in the summer? The Pollutant low altitude thermal inversion take place in the winter and in this period of the year the sun hea

Explain food lipids, Explain Food lipids It is either consumed in the ...

Explain Food lipids It is either consumed in the form of "visible" fats, which have been separated from the original plant or animal sources, such as vegetable oil and butter,

Techniques of closed heart surgery, Techniques :  Depending on the type of...

Techniques :  Depending on the type of surgery planned, the heart may be approached through median sternotomy, left or right thoracotomy. The problems encountered could be due to

Define the term - hemiplegia, Define the term - Hemiplegia The characte...

Define the term - Hemiplegia The characteristics of hemiplegia (again, hemi means "half") are loss of voluntary movements on one side of the body, changes in postural tone, and

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