Bacterial and aspergillus spp. Contamination of domestic kitchens in riyadh, saudi arabia

Abstract EN

A randomized sampling of 50 households in Riyadh City, Saudi Arabia was conducted to determine microbial and Aspergillus spp contaminants in domestic kitchens between May and June 2006.

Samples were taken from open air in the kitchen and from used kitchen sponges.

Inoculation procedures were varied from direct inoculation of the sponge into the medium to dilution of a cut portion of the sponge.

A total of 200 samples were taken from which, 700 culture plates were done (BAP and Nutrient agar).

Identification by the API system of identification (Analytical Profile Index, BioMerieux) revealed Pseudomonas aeruginosa, Klebsiella pneumonia, Staphylococcus epidermidis, Enterobacter cloacae, Diphtheroids and Bacillus cereus, Aspergillus spp.

was isolated and identified microscopically.

Among the isolates, Staphylococcus epidermidis , Staphylococcus aureus was isolated in 90% of the plates followed by Pseudomonas aeruginosa (83%) , Klebsiella pneumonia ; Bacillus cereus (63%).and Aspergillus spp (15%) These opportunistic pathogens may be harmful especially in immunocompromised hosts.

In this setting, there is a constant risk of contamination and transfer to willing hosts, thus appropriate measures should be implemented such as the use of disposable sponges.