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

Explain about the ocular haemodynamics, Explain about the Ocular Haemodynam...

Explain about the Ocular Haemodynamics. The pressure in the ocular arteries can be measured by optical ophthalmodynamometer. The intraocular pressure is raised to the level tha

Meiosis, Meiosis is the special type of cell division in which the numbers ...

Meiosis is the special type of cell division in which the numbers of chromosomes in daughter cell are reduced to half, as compared to parent cell. Occurrence: It takes place

Explain the working of antioxidant function, Explain the working of antioxi...

Explain the working of antioxidant function? The antioxidant function depends on the number of hydroxyl groups and their positions. Among the various derivatives, flavonoids ar

Experiment of making a rock collection, Making a rock collection A coll...

Making a rock collection A collection of the common rocks found in the community can be made by asking every pupil to bring in single piece of rock. Explain to the pupils that

Before purchasing - nursing software, Before Purchasing  Ideally it...

Before Purchasing  Ideally it's wise to buy a readymade software with options to further customize it to suit your managerial functions.   A totally Custom-made softwar

Define precautions for acid fast staining, Define Precautions for Acid Fast...

Define Precautions for Acid Fast Staining? 1. Do not allow carbol fuchsin to dry on heating. 2. Maintain aseptic conditions. 3. Decolourization should be done till no red

What are yeast, Q. What are yeast? Yeasts are unicellular fungi, which ...

Q. What are yeast? Yeasts are unicellular fungi, which are widely distributed in nature. They are somewhat larger than bacteria. The cell length is about 10μm and the diameter

What concerns should alek''s healthcare team, Nine-year-old Alek is admitte...

Nine-year-old Alek is admitted to the emergency room with a closed fracture of the right femur. Radiography revels that the fracture crosses the distal epiphyseal plate. What conce

Give a specific example of homeostasis, Give a specific example of homeosta...

Give a specific example of homeostasis An owl handles its body temperature by burning fuel to make body heat and by fluffing up its feathers to trap an insulating layer of air

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