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

Proteins requirements for ulcerative colitis, Q. Proteins requirements for ...

Q. Proteins requirements for ulcerative colitis? Proteins: Patients with ulcerative colitis lose about 4-8 g fecal N2 as compared to the normal excretion of 2 g. In severe ulce

What is the function of the umbilical cord, What is the function of the umb...

What is the function of the umbilical cord? The umbilical cord is a set of blood vessels that connects the fetus with the placenta. In the fetus one extremity of the cord inse

Explain dna replication, Q. As a result of the DNA replication two DNA mole...

Q. As a result of the DNA replication two DNA molecules come into existence. Why is it not correct to assert that the two "new" DNA molecules are created? What is the name given to

What is cytosolic cyclic amp, What is cytosolic cyclic AMP Healthy Pers...

What is cytosolic cyclic AMP Healthy Person P takes a new drug that is a member of a drug family that results in  constant levels of cytosolic cyclic AMP (cAMP) in one and only

How gender affects the bmr, How Gender affects the bmr? We have already...

How Gender affects the bmr? We have already emphasized earlier that sex difference in metabolic rates are primarily attributable to difference in body size and composition. Wom

What do you mean by eutrophication, Q. What do you mean by eutrophication? ...

Q. What do you mean by eutrophication? The Eutrophication is the process of excessive increasing of nutrients, like nitrate and phosphate in water due to direct deposit of non

Explain in brief about the cell membrane, Explain in brief about the Cell M...

Explain in brief about the Cell Membrane All cells, whether prokaryotic or eukaryotic, are bound by a limiting membrane called the cell membrane or the plasma membrane. The ce

What is exocytosis, Which of the following is true for exocytosis? A. D...

Which of the following is true for exocytosis? A. During exocytosis in skeletal muscle cells, there will be release of calcium ions from intracellular vesicles in the sarcoplas

Selection according to endemic species richness, An alternative approach ha...

An alternative approach has been to identify areas with the highest number of endemics or species with a restricted geographical range. Assessments of this nature have been very of

Explain the sensory respiratory center - feature of medulla, Explain the Se...

Explain the Sensory Respiratory center - Feature of Medulla Respiratory center: The center for regulating rate and depth of respiration is present in the medulla. Here, nerve i

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