The study was conducted to determine the level of Salmonella, Escherichia coli, Enterobacteriaceae and aerobic colony counts (ACCs) contamination in beef carcass, equipment, slaughtermen hands and water at selected stages in abattoirs. Cattle carcasses were sampled at four sites (rump, neck, flank and brisket) from a low throughput (LTA) (n 5 240) and high throughput (HTA) (n 5 384) abattoirs. Using conventional biochemical tests, HTA yielded significantly higher ACC (5.2 log CFU/cm 2 ), E. coli (2.6 log CFU/cm 2 ) and Enterobacteriaceae (2.9 log CFU/cm 2 ) mean scores after skinning and evisceration. Washing and chilling did not cause any significant (P > 0.05) changes in bacterial counts. This implies use of non-potable water and poor chilling methods. Salmonella was not detected on all sampled carcasses. Overall, slaughtermen hands and equipment in the dirty area yielded more bacterial counts compared to clean area from both abattoirs. Therefore, these findings show that the equipment, slaughtermen hands and water are sources of contamination during the slaughter process.
The study was carried out to determine the aerobic plate counts (APC), Staphylococcus aureus, Escherichia coli and Salmonella contamination levels in cooked (n=24) and raw (n=24) beef, pork and mutton samples, surface contact plates (n=48) and water samples (n= 40) from street vendors. A total of 8 street vendors who were willing to participate in the study were randomly selected. After biochemical tests, no significant differences were found in the microbial counts of meat sold by street vendors in Alice and King Williams town. Furthermore, no significant differences were found in the mean scores of raw beef, mutton and pork where APC (4.8, 3.7 and 2.8 Log CFU/g), Staphylococcus aureus (3.3, 3.7 and 2.8 Log CFU/g) and E. coli (1.0, 0.6 and 0.3 Log CFU/g) respectively. Salmonella tested negative in all the samples tested in the study. The results in the study were associated with cross-contamination during processing and storage. However, the levels of contamination in cooked meat were lower when compared to the standards set by Commission Regulation for determining the microbiological quality of ready-to-eat foods. Overall, poor hygiene of the street vendor, utensils, and holding area were major sources of contamination. It was therefore concluded that there were no differences in the microbial counts of meat sold in the informal markets of Nkonkobe and Buffalo City Municipalities in the Eastern Cape Province, South Africa. Improved sanitation facilities, hygiene tools, and training will promote the production of safer food by the street vendors.
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