When staphylococcal occur, Biology

Assignment Help:

Staphylococci exist in air, dust, sewage, water, milk and food or on food equipment, environmental surfaces, humans and animals. Humans and animals are the primary reservoirs. Staphylococci are present in the nasal passages and throats and on the hair and skin of 50 percent or more of healthy individuals. A wide range of foods maybe involved in Staphylococcal food poisoning including ham, turkey, chicken and chicken salad, baked products, especially filled pastries, table ready-meats (sausage etc.), precooked frozen foods and dairy products.

S. aureus cells are relatively more resistant than many gram negative food spoilage organisms. Human intoxication is caused by ingesting enterotoxins produced in food by strains of S. aureus, usually because the food has not been kept hot enough (60ºC, or above) or cold enough (7.2ºC, or below). In frozen foods they may survive even at -10ºC. In general, survival of S. aureus is best in foods that contain high concentration of sugars, eggs and buffering component such as phosphates and protein. Salt concentration less than 9.5%, temperature more than 20ºC and a pH in the range 6-8 are favourable for growth and enterotoxin formation.


Related Discussions:- When staphylococcal occur

Explain the solid-liquid equilibria, Explain the Solid-Liquid Equilibria? ...

Explain the Solid-Liquid Equilibria? A freezing-point curve (freezing point as a function of liquid composition) and a solubility curve (composition of a solution in equilibriu

Carbon, I need the parts of the structure carbon. Include elements,monomer...

I need the parts of the structure carbon. Include elements,monomer,polymer, and any sub units

Kingdom animalia, critera for the animal classification

critera for the animal classification

Peptide bond formation, Peptide bond formation is catalyzed by peptidyl tra...

Peptide bond formation is catalyzed by peptidyl transferase.  The carboxyl  end of the amino acid bound to the tRNA in this reaction and in the P site is uncoupled  from the tRNA a

What is diagnostic wax up, Diagnostic Wax Up A diagnostic wax up should...

Diagnostic Wax Up A diagnostic wax up should be done by you or got done from a laboratory for each and every case regardless of the extent or difficulty level of the case as it

Explain coronary heart disease, Apart from any inherited tendency towards c...

Apart from any inherited tendency towards coronary heart disease, what are thought to be the four major risk factors?  The four major risk factors for coronary heart disease ar

Embryonic induction and cell determination, Embryonic Induction and Cell De...

Embryonic Induction and Cell Determination The cell determination or fate of embryonic cells is regulated through factors which may reside within the embryonic cells or by the

Steps of research process - nursing research, Steps of Research Process: ...

Steps of Research Process: Identify the Problem: The first  task  in  the  planning stage  is  to identify and stage  the problem, as you have  already learnt in the  earlier

Explain about proximal chromosome, Do phylogenetically proximal species ha...

Do phylogenetically proximal species have cells with proximal chromosome counts? The number of chromosomes typical of every species is proximal for phylogenetically proximal sp

Explain lipid formulations, Explain Lipid Formulations Three lipid form...

Explain Lipid Formulations Three lipid formulations of amphotericin B are marketed in the US: amphotericin B lipid complex (ABLC, Abelcet), liposomal amphotericin B (L-AmB, AmB

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