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

Define the term functional foods, Define the term Functional Foods? The...

Define the term Functional Foods? The term 'functional food' was born in Japan. Functional foods are actually products formulated with naturally occurring chemicals or a combin

Cells, What physical and metaboloic constraints limit cell size?

What physical and metaboloic constraints limit cell size?

How do the rough endoplasmic reticulum produce proteins, How do the rough e...

How do the rough endoplasmic reticulum and the Golgi apparatus act in the production and releasing of proteins? The rough endoplasmic reticulum has in its outer membrane many r

Explain the management of renewable resources, Explain the Management of Re...

Explain the Management of Renewable Resources? Since the human population has grown, human impacts on the resources that we use, like fisheries and forests, have continued to g

Survival of the saddleback, The North Island saddleback or tieke, Philestur...

The North Island saddleback or tieke, Philesturnus rufusater, is an endemic New Zealand bird. Saddlebacks inhabit the middle or lower layers of the forest, and eat small invertebra

Disorder of adrenal function, Disorder  of Adrenal Function: The diso...

Disorder  of Adrenal Function: The disorders of  adrenal function may lead  to acute and chronic  .adrenocortical insufficiency. Let  us briefly  describe each  one as follows

Effects on health - consequences of air pollution, Effects on Health - Cons...

Effects on Health - Consequences of Air Pollution Since the air pollutants are inhaled they attack various parts of the respiratory system on their route to air sacs. Once the

How the nurse reviews the labels of the medications, A post-operative clien...

A post-operative client has an order for Demerol 35 mg and Phenergan 12.5 mg. The nurse reviews the labels of the medications. Injectable Demerol (meperidine hydrochloride) is prep

What is sick sinus syndrome, Q. What is Sick Sinus Syndrome? Ans. ...

Q. What is Sick Sinus Syndrome? Ans. When a slow resting pulse fails to accelerate normally with exercise, it has been labeled chronotropic incompetence, however, there i

Describe the formation of egg cells from germ cells, Q. Indicating the name...

Q. Indicating the name and respective ploidy of each involved cell how can the formation of egg cells from germ cells be described? The formation of egg cells begins with a ger

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