Prevalence and Antibiotics Susceptibility Profile of Listeria monocytogenes Isolated from Processed and Unprocessed Meat Products in Lagos, Nigeria
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Ohue, L. A.
Enurah, L. U.
Aboaba, O. O.
Science and Technology
Antibiotics susceptibly pattern of Listeria monocytogenes isolated from processed and an unprocessed meat was investigated. A total of fifty (50) retail meat samples consisting of 20 raw meat, 15 fresh processed meat samples and 15 processed ready- to-eat samples were cultured on Listeria Selective Agar (Oxoid) and Listeria Chromogenic Differential Agar (Oxoid) after pre-enrichment in Buffered Listeria Enrichment Broth. Listeria spp. were isolated from 29 (58%) of the samples, out of which 14 (28%) were Listeria monocytogenes. Listeria monocytogenes was significantly higher in unprocessed meat 9 (45%) than in processed ready-to-eat meat products which were 5 (33%). No isolate was found in fresh processed meat products comprising of smoked bacon, sausages, beef mortadella, minced meat and beef salami. The antibiotic susceptibility of the fourteen Listeria monocytogenes strains was determined by disc diffusion method. High susceptibility was found in Ciprofloxacin (100%), Pefloxacin (100%), Gentamycin (100%), Streptomycin (92.9%), Erythromycin (92.9%), Sulphamethoxazole (71.4%) and Amoxicillin (64.9%). Resistance to Ampiclox was the most common and was encountered in 13 (93%) of the strains. The study shows that Listeria monocytogenes from meat samples is susceptible to the antibiotics commonly used in veterinary and human listeriosis treatment.
Listeria monocytogenes, prevalence, antibiotic susceptibility, processed, unprocessed, meat products
Ohue LA, Enurah LU, Aboaba OO. Prevalence and Antibiotics Susceptibility Profile of Listeria monocytogenes Isolated from Processed and Unprocessed Meat Products in Lagos, Nigeria. Sci. Technol. 2015, 1(1), 12-18