Oxidation-reduction potential, Biology

Assignment Help:

How the Oxidation-reduction potential influence the spoilage of meat?

You learnt earlier that the presence or absence of oxygen and the 0-R potential of the food itself has a bearing on the type of organism which grows on a particular food. In the case of meat, after slaughter, he oxygen stored in the muscle gets reduced bringing down the oxidation reduction potential, while at the same time, it is higher at the surface of the meat. This condition is favorable to aerobic bacteria, yeasts and moulds while the internal conditions still being anaerobic, favours the growth of anaerobic bacteria. Under he anaerobic conditions, both the anaerobes and facultative anaerobes cause putrefaction. Putrefaction, as you know already, refers to the decomposition of oods due to microbial action. This is generally due to the growth of Clostridium spp. within the tissue, with the release of decomposition products like mercaptans, hydrogen sulphides, ammonia etc. The organism which is predominant in the decomposition of protein under anaerobic conditions is the Clostridium perfringens, which incidentally is a food borne disease causing organism. Under he aerobic conditions, apart .from bacteria, yeasts and moulds also grow on meat. The growth of a particular microorganism depends on temperature, moisture and other conditions. The organisms principally responsible for the spoilage of meat are bacteria of the genera Pseudomonas, Bacillus and Micrococcus. The other common bacteria include Cornybacterium, Escherichia and Aerobactel.


Related Discussions:- Oxidation-reduction potential

Regulation of heart, Regulation of Heart The number of electrical imp...

Regulation of Heart The number of electrical impulses initiated by the SA node is primarily the result of its innervation by fibers from both sympathetic and parasympath

Carditis, It has been shown by prospective studies that Rheumatic heart dis...

It has been shown by prospective studies that Rheumatic heart disease (RHD) is linked to the occurrence of carditis during the first episode of ARF. If the first episode is accompa

Define iron requirements of infants, Define Iron requirements of infants? ...

Define Iron requirements of infants? The maintenance needs for all age groups is 14 mcg/kg body weights. For infants and preschoolers, iron needs for growth and' expansion of b

The denver development screening test (ddst), THE DENVER DEVELOPMENT SCREEN...

THE DENVER DEVELOPMENT SCREENING TEST (DDST) The Denver Development Screening Test is a standardized test to assess gross motor, fine motor, language and social development

Predation, Think back to the patterns of predator-prey cycling from Section...

Think back to the patterns of predator-prey cycling from Sections 2 and 3. Which of the three predator functional responses would you expect to be most likely to give stable popula

Explain about skeletal muscle, Explain about Skeletal muscle These are ...

Explain about Skeletal muscle These are attached to the bones by tendons, which help in the movement of the part of the skeleton. These muscles are controlled by our conscious

Why water has key participation in organic reactions, Water has key partici...

Water has key participation in organic reactions. What are examples of two types of organic reactions in which water is respectively incorporated or liberated in the products of th

Define chagas and arrhythmogenic right vent cardiomyopathy, Chagas' Cardiom...

Chagas' Cardiomyopathy It is common in south and Central America and is caused by Trypanosoma cruzi. Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) It is mark

Surface water sources and charactersitics, Most of the surface water origin...

Most of the surface water originates directly from precipitation in the form of rainfall or snow. Ground water from springs also contributes to the flow of most of the streams. The

Geographic speciation, In almost all animal groups, the mode of speciation ...

In almost all animal groups, the mode of speciation is geographic speciation. It is essential that a population which is a prospective new species is geographically isolated from t

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