Title: Analysis of enterotoxin of Staphylococcus aureus isolated from food and food poisoning samples
Abstract: Objective To compare the distribution and difference of the enterotoxin type of Staphylococcus aureus(S.aureus)isolated from food and food poisoning samples in Haidian district.Methods Bacteria strains of S.aureus were isolated from food and food poisoning samples in Haidian district of Beijing from 2007 to 2012.The type of Enterotoxin was determined based on GB 4789.10-2010,A-E staphylococcal enterotoxinproducting assay by ELISA(SEA-SEE).Results Enterotoxin was found in 108out of 127strains of S.aureus with the overall positive rate of 85%,including 76strains from 93S.aureus isolated from food samples(81.7%)and 32strains from 34S.aureus isolated from food poisoning samples(94.1%).There were 47strains(43.5%)in which only one type of enterotoxin was identified,while 37strains(34.3%)were found to be able to produce 3types of enterotoxins.Enterotoxin SEA and SED were mainly found in strains isolated from food poisoning samples(65.6%and 65.6%).98strains were found to produce SEE,accounting for 90.7%of total enterotoxin-positive strains,which was the most common type identified in the study,followed by A,D,C and B.Conclusions Food-borne S.aureus has higher ability to produce enterotoxin and the types of enterotoxin produced by S.aureus isolated from food samples are different from those isolated from food poisoning samples.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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