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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.
Q. Definition of Osseointegration in microscopic biophysical? Osseointegration implies that at light microscopic and electron microscopic levels, the identifiable components of
Anabolism and Catabolism Cellular metabolism has two aspects 1. Anabolism : This aspect includes metabolic process by which complex cellular compounds are
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Define Common complications with spinal trauma patients? Common complications with spinal trauma patients include pressure sores or decubitus ulcers, hypercalciuria and renal s
Annexin V is a protein that binds to Phosphatidylserine. Why is this useful in the lab? Does it have to do with testing whether the cell is in normal condition?
The effect of light on the growth of stems (a) Plant some seeds that grow rapidly like as oats, radish, bean or mustard seeds in two flower pots. When the seedlings are about
A healthy person is on a diet that having of very small amounts of water. A. This person will make a large volume of dilute urine with low amounts of dissolved solutes. B. T
comparitive chart on different types of respiration obserbed in different type of respiration organ of respiration , types of respiration,energy obtained , by product formed
Soil Temperature Soil temperature is known to influence water absorption and ultimately transpiration to a considerable extent. In many plants water absorption is reduced shar
CARBOHYDR A TES Carbohydrate = hydrate of carbon. Hydroxyl group present. Aldehyde group or keto group may present. Carbohydrates are polyhydroxy aldehydes
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