scholarly journals Assessment of Aerobic Plate Counts, Staphylococcus aureus, Escherichia coli and Salmonella in Meat Sold by Street Vendors in the Eastern Cape Province, South Africa

2017 ◽  
Vol 5 (6) ◽  
pp. 436-442 ◽  
Author(s):  
B.E. Mazizi ◽  
V. Muchenje ◽  
M. Makepe ◽  
G. Mutero
Author(s):  
Ezekiel Green ◽  
Abongile Pekana

Background: Staphylococcus aureus (S. aureus) occasionally threatens the life of the host as a persistent pathogen even though it is normal flora of humans and animals. We characterized drug resistance in S. aureus isolated from animal carcasses and milk samples from the abattoirs and dairy farms in the Eastern Cape Province. Methods: A 1000 meat swab samples and 200 raw milk samples were collected from selected abattoirs and dairy farms in the Eastern Cape Province, South Africa. S. aureus was isolated and positively identified using biochemical tests and confirmed by molecular methods. Antibiotic susceptibility test against 14 different antibiotics was performed against all isolates. Antibiotic resistance genes were also detected. Results: Of the 1200 samples collected, 134 (11.2%) samples were positive for S. aureus. Resistance ranged from 71.6% for penicillin G to 39.2% for tetracycline. Resistance gene (blaZ) was detected in 13 (14.9%), while msrA was found in 31 (52.5%) of S. aureus isolates. Conclusions: The present result shows the potential dissemination of multidrug-resistant S. aureus strains in the dairy farms and abattoirs in the Eastern Cape. Therefore, this implies that the organism may rapidly spread through food and pose serious public health risk


2008 ◽  
Vol 71 (4) ◽  
pp. 816-819 ◽  
Author(s):  
B. O. ABONG'O ◽  
M. N. B. MOMBA ◽  
J. N. MWAMBAKANA

Fresh vegetables have been implicated in outbreaks of Escherichia coli O157:H7 in most parts of the world. Microbiological quality of vegetables used as recipes for salads is very crucial. Residents of the Amathole District in the Eastern Cape Province of South Africa consume salads frequently, although the microbial quality of recipe vegetables is questionable. The present study investigated the prevalence and antimicrobial susceptibility of E. coli O157:H7 isolated from selected vegetables sold within the Amathole District. One hundred eighty samples of the vegetables were analyzed. Strains of E. coli O157:H7 were isolated by enrichment culture and by immunomagnetic separation and identified by conventional and molecular techniques. In three settlements in this district, the mean counts of presumptive E. coli O157 for the vegetables ranged between 9 × 103 and 1.6 × 106 CFU/g for Fort Beaufort, 1.6 × 103 and 1.6 × 105 CFU/g for Mdantsane, and 1.3 × 103 and 4.1 × 104 CFU/g for Alice. Four (10.3%) of 39 vegetable samples were confirmed to carry E. coli O157:H7. Four representative E. coli O157:H7 isolates from these vegetables were susceptible to at least one of the eight antimicrobial agents tested against them. Even though the prevalence of E. coli O157:H7 was low and those isolated were susceptible to most of the antimicrobials, there remains a need for E. coli O157:H7 surveillance in vegetables used in salad recipes in urban and rural areas of South Africa.


1994 ◽  
Vol 57 (4) ◽  
pp. 305-310 ◽  
Author(s):  
S. M. VORSTER ◽  
R. P. GREEBE ◽  
G. L. NORTJÉ

Three types of processed meats (vienna sausages, shoulder ham, and cervelat), ground beef and broilers were purchased from 17 different supermarkets in the Pretoria area (South Africa) during 1991. The 232 samples were analyzed for the presence of Escherichia coli and Staphylococcus aureus, with total aerobic plate counts (APCs) also being determined. Escherichia coli was found in 74.5% of the ground beef samples, in 79.1% of the broilers, and in 27.7% of the processed meats. Staphylococcus aureus was found in 23.4% ground beef, 39.5% broiler and 7.1% processed meat samples. The total APCs ranged from as low as log10 1 CFU/g of sample (shoulder ham) to as high as log10 12.1 CFU/g (ground beef). No identifiable relationship between the total APCs and the occurrence of E. coli and/or S. aureus was evident. This study confirms the view that E. coli and S. aureus are frequent contaminants of meat, with South Africa being no exception.


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