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Archives 2006
Myanmar Health Sciences Research Journal
Volume 18, Number 1
TITLE: Distribution of coliforms, faecal coliforms and enteropathogenic E.coli (EPEC) in fried rice and water samples from street vendors of Yangon and detection of bacterial toxins.
AUTHOR: Mar Mar Nyein; Yee Yee Aung; Mi Mi Htwe; Tin Nwe
SOURCE: Myanmar Health Sciences Research Journal. 2006; 18(1): 48-52
ABSTRACT: The contamination of coliforms, faecal coliforms and enteropathogenic Escherichia coli (EPEC) was tested in 45 fried rice samples collected from different street vendors of three townships from Yangon area. Toxin produced by E. coli was also studied. High total bacterial count of 104 to >106 was recorded from 42 samples of fried rice. Among them, coliforms, faecal coliforms and EPEC were isolatedfrom 32 (71.11%) samples, 15 (33.33) samples and 29 (64.44%) samples respectively. The serogroup O55K59 was the commonest pathogen isolated from 11 samples (24.44%). The other serogroups encountered were O1K51 (from 4 samples), O26K60 (from 3 samples), O25K+ and O125K70 (from 2 samples each). Other serogroups isolated were O27K+, O44K74, O86K62, O111K58, O114K90, O128K70 and O136K78 (from one sample each). Enterotoxigenic E. coli–heat-labile (ETEC-LT) toxin and verotoxin (VTEC) were detected from 2 samples (4.44%) and from one sample respectively. Similarly, coliforms, faecal coliforms and EPEC were isolated respectively from 39 (86.66%), 21 (46.67%) and 23 (51.11%) water samples used for multipurpose in those shops.The serogroupO55K59was commonly found with the isolation rate of 11 (24.44%); O119K69 was isolated from 2 samples and the other serogroups such as O1K51, O26K60, O44K74, O86K62, and O128K67 were also detected .ETEC-LT toxin was detected from one sample (2.22%) of water only.
SUBJECT HEADINGS: Escherichia coli. Bacterial Toxins. Rice. Water.
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