Bacterial species in raw and cured compost from a large-scale urban composter |
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Authors: | S A Andrews H Lee J T Trevors |
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Institution: | (1) Department of Environmental Biology, University of Guelph, N1G 2W1 Guelph, Ontario, Canada |
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Abstract: | Summary Raw and cured compost samples from a large-scale urban composter were studied over a period of eight months to gain information on bacterial species present. Total viable, aerobic heterotrophic bacteria, lactose-positive bacteria, antibiotic and metal-resistant bacteria and thermophilic bacteria were enumerated. Both raw and cured compost samples contained metal and antibiotic-tolerant bacteria (–1 compost) as well as high numbers (as high as Log 7.4 CFU g–1 dry weight compost) of thermophilic bacteria isolated by growth at 55 °C. Selected colonies were also identified using the Biolog 95 substrate identification system.Escherichia coli andSalmonella spp. were not detected in compost samples. |
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Keywords: | Antibiotic resistance Bacteria Compost Metal-resistance Thermophilic bacteria |
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