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

Explain counseling children, Counseling children Assess the child's sta...

Counseling children Assess the child's stage of development. Adjust counseling for a child's  dependency needs,  lack of  experience and  the development tasks faced by  him

Define general protection in the laboratory, Define General protection in t...

Define General protection in the Laboratory? You are required to wear a laboratory coat at all times in the laboratory. It is sensible to buy one of good quality and to launder

Excretion in protozoans, Excretion in Protozoans Excretion of metaboli...

Excretion in Protozoans Excretion of metabolic wastes is dope almost exclusively by diffusion. All protozoans are ammonotelic i.e., the end product of their nitrogen metabolis

Vibriosis/campylobacteriosis, Vibriosis/campylobacteriosis This is gen...

Vibriosis/campylobacteriosis This is genital disease of cattle and sheep. The causal organism Campylobacter fetus is a gram negative, curved or spiral shaped bacteria having s

Cutaneous larva migrans, Cutaneous larva migrans Cutaneous larva migrans, ...

Cutaneous larva migrans Cutaneous larva migrans, also known as creeping eruption, creeping verminous dermatitis or serpiginous eruption, is caused by larvae of many nematodes, viz

Describe a. the factors responsible for promoting lactation, Describe a. th...

Describe a. the factors responsible for promoting lactation, and b. the mechanism responsible for the cessation of lactation when a mother weans her baby.

How do beings of the class reptilia classify\, Concerning the maintenance o...

Concerning the maintenance of body temperature how do beings of the class Reptilia classify? Like fishes and amphibians, beings of the class Reptilia are heterothermic animals

Define mineral trioxide aggregate - root end filling, Define Mineral Trioxi...

Define Mineral Trioxide Aggregate - Materials for Root End Filling Widely used Favorable biocompatibility Superior sealing qualities when compared to S-EBA and am

Of what subunits are ribosomes are made, Q. Of what subunits are ribosomes ...

Q. Of what subunits are ribosomes are made? Ribosomes are made of two subunits the small subunit and the large subunit. These subunits are made of proteins and ribosomic RNA (r

Run off-water cycle, Run off Some of the rainfall is soaked into the so...

Run off Some of the rainfall is soaked into the soil and excess water flows over the land surface along the natural slope of the area. Run off is the main source of water for l

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