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

Zoonoses disease-monkey pox, Monkey pox Monkey pox is caused by Monkey pox...

Monkey pox Monkey pox is caused by Monkey pox virus, a member of genus Orthopoxvirus. Transmission generally occurs as a result of close contact with infected animals, mostly thro

Drawbacks of free food items for diabetics patients, Drawbacks of Free Food...

Drawbacks of Free Food Items for diabetics patients In this context, it is important to note that a patient can have unlimited servings of 'free foods'. These are foods which d

Define a ''rag doll'' seed tester, A 'rag doll' seed tester Fold a squa...

A 'rag doll' seed tester Fold a square metre of muslin twice in the similar direction. Near one end mark out eight or ten squares about 5 cm by 5cm with a pencil. Number the sq

List disbeliefs which patients have about insulin, Q. List disbeliefs which...

Q. List disbeliefs which patients have about insulin? a) Insulin is not effective. Some patients believe that insulin is not effective for treating diabetes. b) Insulin c

Describe chemical equation of photosynthesis?, Q. What is the chemical equa...

Q. What is the chemical equation of photosynthesis? The chemical equation of photosynthesis is given below: 6 CO 2 + 6 H 2 O + light --> C 6 H 12 O 6 + 6 O 2

Brain, why left brain controls right side of the body and right brain contr...

why left brain controls right side of the body and right brain controls left side of the body....?????

What are some examples of interspecific competition, What are some examples...

What are some examples of interspecific competition? Examples of interspecific competition are: the dispute between vultures, worms, flies and microorganisms for carrion and th

Respiration in animal, what is respiration in animals ,its functions ,types...

what is respiration in animals ,its functions ,types of respiration

Flower, flowers formation without any leaves?

flowers formation without any leaves?

What do you mean by digestive enzymes, Q. Besides the pancreatic juice in t...

Q. Besides the pancreatic juice in the intestine there is the releasing of the enteric juice that contains digestive enzymes too. What are these enzymes and which type of molecule

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