Bacteriological quality of commonly consumed fruit juices and vegetable salads sold in some fruit juice houses in Addis Ababa, Ethiopia

摘要

This study was conducted by collecting samples of 63 fruit juices and 21 vegetable salads from 21 juice houses. The survey indicated poor kiosk sanitary situation and personal hygiene, and bad storage conditions. Mean average of total viable counts of the samples of juices and vegetable salads was found to be 5.96 log cfu/g. The highest and lowest mean total coliform counts (TCCs) were that of avocado (1.17 log cfu/mL) and mango (0.51 log cfu/mL) juice samples. Mean fecal coliform counts were between 0.04 and 0.09 log cfu/mL. Treatment with sodium benzoate (0.1%) was found effective in reducing the total viable count. Escherichia coli and Salmonella were detected from 32.14% and 3.6% of samples, respectively. All E. coli and Salmonella isolates were found resistant to vancomycin. Hygienic status of the kiosks, storage situation of prepared juices and vegetable salads, and ingredients are the critical contributing factors for high microbial load of juices and vegetable salads.