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Prevalence of Coliforms in Traditionally Dried Leafy Vegetables Sold in Open Markets and Food Stores in Gaborone, Botswana

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The aerobic mesophilic count, coliform count, and prevalence of Escherichia coli on two vegetables commonly consumed by a majority of people in Botswana were determined. The aerobic count was found to be >105 CFU/g in both kinds of vegetables and as many as 27 to 30% of the samples had counts >107 CFU/g. Escherichia coli was present in 82% of the Amaranthus leaves sold as morogo in food stores and 50% of the Phaseolus leaves purchased from open markets. Nonfecal coliforms were present in all samples. The nonfecal coliforms belong to species of Klebsiella and Enterobacter and were present in the samples at values of 1 × 101 to 4 × 104 CFU/g.


Document Type: Research Article

Affiliations: Department of Biological Sciences, University of Botswana, P. BAG 0022, Gaborone, Botswana

Publication date: January 1, 1996

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