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Staphylococcal food poisoning, which is still a serious health problem worldwide, is caused by staphylococcal enterotoxin (SE) . Among many types of SE, staphylococcal enterotoxin type A (SEA) is known to be the most responsible for staphylococcal food poisoning. Production by SEA-producing strains in shaking culture has been studied by many investigators, whereas the kinetical differences between shaking and stationary cultures have not been studied intensively. Therefore, this difference was studied at various temperatures from 14℃ to 46℃ in the present study. Consequently the maximum SEA concentration and populations of SEA producer in shaking culture was higher than those in stationary culture. Of interest, however, the productivity, which is the maximum SEA amount produced by one cell, in shaking cultures was lower than that in stationary culture. Kinetic analysis clarified that SEA gene expression in staphylococcal cells preceded toxin production at optimal temperature. Next, several SEA producers were studied for the maximum toxin production at various temperatures from 14℃ to 42℃ in shaking culture. Consequently all strains showed different patterns, suggesting that the characteristics of SEA production of these strains would be strain-specific. These results in this study would provide useful, basic information to prevent staphylococcal food poisoning outbreaks.
This article was published in the following journal.
Name: Biocontrol science
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Pneumonia caused by infections with bacteria of the genus STAPHYLOCOCCUS, usually with STAPHYLOCOCCUS AUREUS.
A strain of Staphylococcus aureus that is non-susceptible to the action of METHICILLIN. The mechanism of resistance usually involves modification of normal or the presence of acquired PENICILLIN BINDING PROTEINS.
A protein present in the cell wall of most Staphylococcus aureus strains. The protein selectively binds to the Fc region of human normal and myeloma-derived IMMUNOGLOBULIN G. It elicits antibody activity and may cause hypersensitivity reactions due to histamine release; has also been used as cell surface antigen marker and in the clinical assessment of B lymphocyte function.
A 25-kDa peptidase produced by Staphylococcus simulans which cleaves a glycine-glcyine bond unique to an inter-peptide cross-bridge of the STAPHYLOCOCCUS AUREUS cell wall. EC 184.108.40.206.
A common superficial bacterial infection caused by STAPHYLOCOCCUS AUREUS or group A beta-hemolytic streptococci. Characteristics include pustular lesions that rupture and discharge a thin, amber-colored fluid that dries and forms a crust. This condition is commonly located on the face, especially about the mouth and nose.
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...
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