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

Circulatory system in cockroach, CIRCUL A T O R Y SYSTEM IN COCKROACH ...

CIRCUL A T O R Y SYSTEM IN COCKROACH Type is open or lacunar. i.e. b.v. absent. Organs are dipped in haemolymph. 1 .      HAEMOLYMPH - Blood and lymph are mixed.

What is the limit of resolution express, On a given microscope, the numeric...

On a given microscope, the numerical aperture of the objective is 1.5. The microscope is provided with a filter that selects a wavelength of 500 nm. What is the limit of resolution

Name the three types of joints in human skeleton, Describe giving one examp...

Describe giving one example of each, the three types of joints in human skeleton, based on the capacity of movement. A patient was complaining of frequent urination, excessive

Define investigative techniques in nutritional biochemistry, Define Investi...

Define Investigative Techniques in Nutritional Biochemistry? It is an important component of this manual as it focuses on providing an understanding of biochemical methods, tec

Expression clone, Expression clone  is a clone (plasmid in the bacteria, or...

Expression clone  is a clone (plasmid in the bacteria, or might be a lambda phage in bacteria) which is designed to produce the protein from the DNA insert. Mammalian genes do not

Macro µ nutrients, Tabulate macro & micro nutrients on the basis of -...

Tabulate macro & micro nutrients on the basis of -elements, source, synthesis site, symptoms

Precautions used during a fever in a human, During a fever in a human  ...

During a fever in a human   A.  shivering may occur when the actual body temperature is lower than the set point for body temperature during the fever.   B.  there is an inc

Digestive system, explain the digestive system with slides because i want t...

explain the digestive system with slides because i want to prepare this topic for CSS examination

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