A total of 150 samples of street foods comprising 30 each of 'sambussa', 'macaroni', 'lentil sandwich', 'kitfo' (raw minced meat) and 'egg sandwich' were examined for the relation between their holding temperatures and bacteriological profile. Over 90% of the samples were stored within a temperature range of 15.5-34.5°C. At this holding temperature counts of coliforms and members of the Enterobacteriaceae were below detectable levels in 'sambussa' samples. In 'macaroni', 'lentil sandwich', 'kitfo' and 'egg sandwich' these counts were higher than 106 cfu g-1 in most cases. Over 70% of the street food samples had aerobic mesophilic counts higher than 107 cfu g-1. Of the total of 1552 bacterial strains isolated from the different food samples, Bacillus spp. (29.1%), staphylococci (22.8%) and micrococci (15.4%) were among the dominant groups. Members of the family Enterobacteriaceae (14.5%) were also frequently encountered.
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Document Type: Technical Note
Department of Biology, Faculty of Science, Addis Ababa University, Addis Ababa, Ethiopia
Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
March 1, 2001
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