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

What is the speech perception test, What is the Speech Perception Test ...

What is the Speech Perception Test The subject is asked to listen to a series of 60 sounds, each of which consists of a double e digraph with varying prefixes and suffixes. The

Enumerate the absolute and relative contraindications, Enumerate the absolu...

Enumerate the absolute and relative contraindications. 1. Absolute contraindications - Recent myocardial infarction - Valvular prosthesis - Severe renal disea

Explain transposition with vsd with restricted pulmonary, Explain transposi...

Explain transposition with VSD with restricted pulmonary? Transposition of great arteries with VSD with restricted pulmonary blood flow: Restriction to pulmonary blood flow

Disease prevention for the high risk group, Disease Prevention for the High...

Disease Prevention for the High Risk Group   Interventions aimed at early diagnosis and appropriate management for reducing morbidity and mortality targeting people who suffer

How many ml should the nurse administer, The doctor writes an order for 125...

The doctor writes an order for 125 mg of a medication. The label on the vial states "50 mg per ml". How many ml should the nurse administer?

Osmotic stress, when microbial culture must be harvested after giving osmot...

when microbial culture must be harvested after giving osmotic stress to analyze osmotolerant genes?

Types of sperm, TYPES OF SPERM Mainly two types . (1) Flagellated Sp...

TYPES OF SPERM Mainly two types . (1) Flagellated Sperm - Generally all sperm are monoflagelated, but in todfish or opsonus sperm is biflagelated. (2) Non flagellated spe

Domestication and cultivation of ornamental plants, As with food crops, the...

As with food crops, the "discovery, domestication and cultivation" of ornamental plants have a long history. There is  indication that lilies were cultivated in China for both medi

Primary prevention of diabetes mellitus, Q. Primary prevention of diabetes ...

Q. Primary prevention of diabetes mellitus? Approaches to Prevention: There are various approaches to prevention. Four levels of prevention related to different stages of a di

Seed dispersal, what are the characteristics of the stages in seed dispersa...

what are the characteristics of the stages in seed dispersal

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