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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.
What does an osteoblast cell do? Living cells within the bone are occupied in an unceasing process of remodeling. Osteoblasts lining the surface of bone are much like fibroblas
Discuss the refractive and response to wound functions of cornea. Refractive Function: Cornea, through its interaction with the tear film, forms a smooth refractive functi
Define nutritional needs During Recovery? Here, let us discuss what should be the nutritional goals based on the physiological aspects involved. Goals: The main emphasis mus
Q. What is the function of the secretions of the seminal vesicle, prostate and bulbourethral glands in reproduction? These secretions along with sperm cells from the testicles
Who was Gregor Mendel? Mendel is considered the father of Genetics. He was a monk, biologist and botanist born in Austria in 1822 and who died in 1884. During the years 1853 to
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Hypothetical Age Pyramids The three types of hypothetical age pyramids which are as follows: 1) A pyramid with a broad base, indicating a high percentage of young individua
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Q. Why is waste considered one of the major environmental issues? The environmental problem regarding waste worsens with industrial development and the global growth of consump
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