Antibiotic and Bacteriocin Sensitivity of <i>Listeria monocytogenes</i> Strains Isolated from Different Foods

Abstract

This study aimed to determine the antibiotic and bacteriocin sensitivity of <i>Listeria monocytogenes</i> strains isolated from animal derived foods. With disc diffusion assay, all fourteen L. <i>monocytogenes</i> strains were suscepti-ble to the antibiotics, including penicillin G, vancomycin, tetracycline, chloramphenicol, rifampicin, erythromycin, gentamicin and trime- thoprim. However, the percentages of fosfomycin and streptomycin resistances were 92.9% and 7.1%, respectively. Multiple resistances were not observed among the tested strains. The results of well diffusion assays showed that all strains were inhibited by the cell-free supernatant of a bacteriocin-producing strain, <i>Pediococcus acidilactici</i> 13, with the inhibition zones ranging from 16.00 to 24.50 mm. These results provide useful information on antibiotic resistance of L. <i>monocytogenes</i> strains isolated from foods, and can potentially be used to develop bacteriocin-based interventions to guard against the hazards associated with L. <i> monocytogenes</i> in ready-to-eat meat and poultry products

Serotyping and antibiotic susceptibility of Listeria monocytogenes isolatedfrom ready-to-eat foods in Samsun, Turkey

“…On the other hand, tetracycline was shown to have good activity against L. monocytogenes in our study. These results are in agreement with those reported previously by Altuntas et al (27) Previous studies have shown that Listeria spp., including L. monocytogenes, are resistant to various antibiotics such as phosphomycin, streptomycin (27), rifampin (18), sulfonamide, tetracycline, ciprofloxacin (21), clindamycin, streptomycin, amikacin (17), tilmicosin, and tetracycline (28). Although most researchers reported that strains of Listeria spp.…”

Phenotypic and Genotypic Characterization of Listeria Species Isolated From Chicken and Milk Products.

“…The most important aspect in food hygiene is the ability of the bacteria to survive in a wide range of temperatures and to make biofilms on various environmental surfaces, which serve as natural habitats or reservoirs (Duggan and Phillips, 1998). Listeria monocytogenes wasn't found in Frozen wings of poultry, frozen breast of poultry that totally disagreed with (Reiter et al, 2005) The result of in vitro sensitivity test showed that ,the isolated L.monocytogenes were highly sensitive to Sulphamethoxazole /trimethoprim (100%), so we can use it in its medication (Swaminathan and Gerner-Smidt, 2007),followed by Gentamycin Ceftazidime and Cephazoline (71.4%), followed by Sulphamethoxazole, ceftriaxone (42.8%), weak sensitivity to Penicillin (14.2%), while the isolated strains were resistant to Erythromycin, Ampicillin and Clindamycin and these results came in accordance with those recorded by (Zeinali et al, 2017) and disagreed with (Altuntas et al,2012). All L.monocytogenes isolates were positive to CAMP test and showed narrow zone of β-heamolysis in sheep agar, the similar results were reported by (Marrouf et al ., 2007).…”

Prevalence and antimicrobial resistance patterns of Listeria species isolated from poultry products marketed in Iran

“…to chloramphenicol (Table 2) could be due to the illegal use of this antimicrobial in some poultry farms. The high sensitivity of L. monocytogenes to some antimicrobials commonly used to treat listeriosis (rifampin, trimethoprim/sulfamethoxazole, gentamycin, erythromycin and vancomycin) is in agreement with the reports of Alonso-Hernando et al (2012), Altuntas et al (2012) and Pesavento et al (2010).…”