Volume 7, Issue 4 (December 2020)
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Original article
P. 163-169
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- Overall, 0.37% (120 out of 32 648) beef carcasses were condemned during the period of this study in Oshana, Namibia.
- The major causes of condemnation of carcasses were bruising (60 out of 120; 50%), followed by pus contamination.
- Bovine carcass condemnation rate in this region varied with the year, season, and age.
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- Three out of 20 herbal tea samples (15%) were contaminated with Cronobacter sakazakii; none of the samples were contaminated with Salmonella spp.
- C. sakazakii was not eliminated by the tea infusion with hot water.
- The results highlighted the need for quality control of tea during production to eliminate C. sakazakii.
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- The mean Total Plate Count (TPC) in kebab samples was 5.3 log10 Colony Forming Unit (CFU)/g.
- Based on TPC, 13 out of 43 (30.2%) of kebab samples did not comply with the Indonesia National Standard.
- Escherichia coli was identified in 5 out of 43 samples (11.6%) with mean of 39.2 Most Probable Number (MPN)/g.
- Four out of 5 E. coli isolates were resistant to gentamycin; and all of them were susceptible to amoxicillin/clavulanate and chloramphenicol.
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- Electron beam irradiation at zero time was not effective on viability of Sarcocystis; but at 24 h, irradiation doses 3 and 4 kGy caused a significant reduction in Sarcocystis viability.
- No significant differences were observed between irradiation doses 3 and 4 kGy.
- Electron beam irradiation at dose of 3 kGy was effective as the optimal dose for the elimination of Sarcocystis spp. in beef.