Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define the Utilization of Most Probable Number Techniques?
The MPN technique (multiple tube technique) can be used to determine the presumptive coliform count in the food. The sample is homogenized adequately and decimally diluted in saline solution or peptone water. Measured portion (e.g. 1 ml) of the solution and dilutions is transferred into multiple tubes (3 or 5) of selective and differential medium e.g. LST and incubated at 35°C for 48 hours.
Production of gas in inverted Durham tube by lactose fermentation indicates coliforms. By using standard MPN tables, as given herewith, MPN/ml or MPN/g of food samples is derived from number of positive tubes at 3 successive dilutions.The method was given by Mc Crady in 1915 and is statistically based. Three tubes or five tubes method can be used by inoculating 3 serial dilution of the sample into 9 or 15 tubes of appropriate medium respectively. The number of organisms in the original sample is determined by using standard MPN table as we have already studied in the last practical.
Estimation of Nitrogen and Protein Content Using Micro Kjeldahl's Method? Standardization of H 2 SO 4 Prepare a solution of 0.1 N H 2 SO 4 by diluting 2.8 ml of the con
Why did it take 150 years for the cell theory to be developed after microscopes were invented? Information about cells could not be understood and organized into a central theo
Explain lyases These enzymes (code EC 4) cleave C-C, C-O, C-N and other bonds by elimination, forming double bonds or conversely adding groups to double bonds. Common names
Mechanisms that Affect the Heart Rate Two different mechanisms affect the heart rate. Nerve impulse to the pacemaker region and hormonal influences. A branch of the vagues ner
(a)State the law of independent assortment. (b )Using punnett square demonstrate the law of independent assortment in a dihybrid cross including two heterozygous parents.
give an example invertebrate phylum/phyla for protoplasmic grade organization
Ask quYour organs are wonderous things, each one with a different function vital to the homeostasis of your body. While it is easy for us to view a particular organ as a single ite
How is gas exchange done in flatworms? Platyhelminthes exchange gases exclusively by diffusion by their body surface. This is only possible because all cells are localized rela
Define Methods for Estimation of Iron and Haemoglobin? In this section we shall study the procedure involved in estimation of iron in any sample first followed by a review on t
Q. Show Risk factors of cardiovascular disease? Various risk factors of cardiovascular disease. We will now briefly mention the causes related to hypertension. 1. Genetic
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd