Effect on microbial growth and ecology, Biology

Assignment Help:

Effect on Microbial Growth and Ecology

Redox potential exerts an important selective effect on the microflora of a food since it will decide the type of microorganism that can grow in that food. Microbial growth can occur over a wide spectrum of redox potential. However, individual microorganisms have their own redox ranges over which they can grow. Based on their ability to use free oxygen, microorganisms have been classified as

1. Aerobic when they require free oxygen.

2. Anaerobic when they grow best in the absence of free oxygen.

3. Facultative when they grow well either aerobically or anaerobically.

Molds are aerobic, most yeast grows best aerobically and bacteria may be aerobic, anaerobic, or facultative. A high (oxidizing) potential favours aerobes but will permit the growth of facultative organisms also, and a low (reducing) potential favours anaerobic or facultative organisms. Growth of an organism may alter the O-R potential of a food enough to inhibit other organisms. Anaerobes, for example, may lower the O-R potential to a level, which is inhibitory to aerobes.


Related Discussions:- Effect on microbial growth and ecology

Worms, what is the mode of nutrition for worms?

what is the mode of nutrition for worms?

Choices of microscope and stain, Name TWO choices of microscope and stain (...

Name TWO choices of microscope and stain (if stain should be used) that you could use to view each of the following. For example, to view human cheek cells you could use (1) bright

Accidents resulting in death, Accidents Resulting in Death Accidents t...

Accidents Resulting in Death Accidents that cause death are dealt with in a different way. The law requires full compensation to the widow for complete life or until remarriag

Is water a polar or a non-polar molecule, Is water a polar or a non-polar m...

Is water a polar or a non-polar molecule? What is the consequence of that characteristic for the function of water as solvent? Water is made of two atoms of hydrogen attached b

Cation saturation and nutrient absorption by plants, Cation Saturation and ...

Cation Saturation and Nutrient Absorption by Plants The availability of adsorbed cations is not always so easy as the above explanation might suggest. This is because, several

What are the difference between plasma membrane, Q. What are the difference...

Q. What are the difference between plasma membrane and cell wall? Plasma membrane and cell wall is not the same thing. Plasma membrane, also known as cell membrane, is the exte

What si adenosine or dipyridamole thallium scan, Q. What si Adenosine or Di...

Q. What si Adenosine or Dipyridamole Thallium Scan? These studies are newer modalities that allow studying perfusion abnormalities to the myocardium when the patient cannot per

Spoilage of fruits and vegetables, Q. Explain Spoilage of Fruits and Vegeta...

Q. Explain Spoilage of Fruits and Vegetables? Ans. Fruits and vegetables are an integral part of daily diets of man all over the world. The spoilage of fruits and vegetabl

Explain cell cycle, Q. What is the cell cycle? The Cell cycle, or mitot...

Q. What is the cell cycle? The Cell cycle, or mitotic cycle, is the time period that begins when the cell is finishes and created when it is divided by mitosis creating two dau

Contemporary interests in nutritional biochemistry, Contemporary Interests ...

Contemporary Interests in Nutritional Biochemistry As  newer techniques in biochemistry have emerged from time to time, these were of immense help  in  the  understanding of ut

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