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

Nutrition - different feeding habits, Different Feeding Habits Feeding ...

Different Feeding Habits Feeding habits of animals depend on the nature of the food consumed. Herbivorous : When plants are eaten. Examples - Horse, cow, rabbit, apes.

Benefits of computerization, Benefits of Computerization Computerizati...

Benefits of Computerization Computerization were the following benefits in nursing: Improved professional care  Better accuracy (by decreasing human error)  Effect

Mention causes of implant failure due to restorative problem, Mention cause...

Mention causes of implant failure due to restorative problems. 1) Restorative problems: a) Excessive cantilever. b) Use of implants with rigid prosthetic connection with

Define the maxillary tuberosity, Maxillary Tuberosity Incision and refl...

Maxillary Tuberosity Incision and reflection of the mucosa overlying the areas of the maxillary tuberosity and hamular notch when taking impressions for maxillary subperiosteal

Protozoans, classification on protozoans

classification on protozoans

Determine the floor of nose and nasal spine, Floor of nose and Nasal spine ...

Floor of nose and Nasal spine Although variable, the nasal floor is typically situated 5-9mm below the level of inferior turbinates. The inferior piriform rim is used as a guid

Enumerate about the halstead- reitan battery, Enumerate about the Halstead-...

Enumerate about the Halstead- Reitan battery As in the case of the Halstead- Reitan battery, one could present two theoretical bases for the Luria- Nebraska, one revolving arou

Mitral valve replacement with allograft , Mitral Valve replacement with All...

Mitral Valve replacement with Allograft (Mitral homograft) :  C. Acar and colleagues used mitral allograft for mitral valvc replacement using a new technique of fixation of p

How is reproduction done in beings of the class reptilia, Q. How is reprodu...

Q. How is reproduction done in beings of the class Reptilia? These beings reproduce sexually through internal fecundation by means of copulation between female and male individ

How we can do karyotype analysis, Why in the preparation of a karyotype ana...

Why in the preparation of a karyotype analysis is the use of a substance like colchicine interesting? Colchicine is a substance that disallows the formation of microtubules 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