What is quantitative techniques - microbial culture, Biology

Assignment Help:

What is Quantitative Techniques?

Microbial quality of substances like food, milk, air, water, soil etc. can be assessed both qualitatively and quantitatively. Quantitative enumeration of microorganisms in a given sample can be accomplished in a laboratory by employing various methods, either by direct or indirect counts, each having its own advantages and disadvantages. No single method is always best. The most appropriate approach will depend on the experimental situation. These methods can also be used to measure microbial growth, determining growth rate and generation time. These methods devised for microbial quantitation either measure the cell numbers or determine the cell mass or cell constituents like DNA, protein, O2 uptake, carbon dioxide production, turbidometric measurement for increase in cell number, membrane filter count and the serial dilution agar plate method etc. Microbial populations are very large, therefore, most of the methods of counting are based on direct or indirect counting of a very small sample, achieved indirectly by a series of dilutions. Calculations then determine the size of total population.


Related Discussions:- What is quantitative techniques - microbial culture

Acute complications of ptca, Acute Complications of PTCA :  The incide...

Acute Complications of PTCA :  The incidence of complications after PTCA that require emergency surgery has reduced considerably in the present era. Introduction of stents, pe

Define about calcium and osteoporosis, Define about Calcium and Osteoporosi...

Define about Calcium and Osteoporosis? Gain in bone mass occurs throughout childhood; however, during adolescent growth spurt, the gain in bone mass, as well as, calcium retent

Side effects of sedatives and hypnotics, Side Effects of Sedatives and Hypn...

Side Effects of Sedatives and Hypnotics: Side effects are same  like anti anxiety drugs such as hypotension, palpitation, syncope (fainting), change in libido, physical or psy

Explain what is fern allies - lycopophyta, Explain what is Fern Allies - Ly...

Explain what is Fern Allies - Lycopophyta ? Fern allies are those groups of vascular (with conducting vessels) plants that have close ties to the ferns. Sometimes they are refe

Why is maternal milk important for the immune protection, Why is maternal m...

Why is maternal milk important for the immune protection of the baby? Besides being nutritionally significant, maternal milk participates in the defense of the baby against inf

Determine the uses of electrical recording - brain function, Determine the ...

Determine the uses of Electrical Recording - Brain function We can also learn about brain function by recording its electrical activity. In electroencephalography (EEG) and the

Models for enzyme-substrate complex formation, Models for enzyme-substrate ...

Models for enzyme-substrate  (ES) complex formation There are two popular models to explain the enzyme-substrate interaction. These are: a) Fischer's template or lock and ke

Precautions for selective and differential medium, Precautions for Preparat...

Precautions for Preparation of Selective and Differential Medium 1. Dissolve ingredients one by one. 2. Check and set the medium to appropriate pH. 3. Autoclave the mediu

Nutrient availability, Nutrient Availability You have seen that cation ...

Nutrient Availability You have seen that cation exchange plays an important part in nutrient availability to plants. Cation exchange functions in two ways as nutrients are rele

Define intracellular fluid or the water within the cells, Define intracellu...

Define intracellular Fluid or the water within the cells? The intracellular Fluid or the water within the cells makes up about 40-4596 of the total body weight. Because the bod

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