Prevalence and antimicrobial resistance of Listeria spp. in homemade white cheese

Arslan, Seza; Özdemir, Fatma

doi:10.1016/j.foodcont.2007.04.009

Cited by 90 publications

(97 citation statements)

References 17 publications

(16 reference statements)

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“…In contrast, contrary results were noted by some researchers. Arslan and Özdemir, (2008) detected L. monocytogenes in 9.2% cheese samples. Furthermore, Kaptan (2016) was determined L. monocytogenes in 15.77% of cheese samples.…”

Section: Discussionmentioning

confidence: 96%

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Prevalence and Characterization of Listeria Species from Raw Milk and Dairy Products from Çanakkale Province

Şanlibaba

Tezel

2018

Turkish JAF Sci.Tech.

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The objective of this study was to determine the prevalence of Listeria species, specifically Listeria monocytogenes, in raw milk, pasteurized milk, white cheese, and homemade cheese. A total of 200 food samples were collected and analyzed to examine the presence of Listeria spp. The EN ISO 11290-1 method was used for isolation of Listeria. API Listeria test kit was used for biochemically characterization. Listeria spp. were isolated in 25 of the 200 samples (12.5%). The largest number of Listeria spp. was detected in homemade cheese (24%), followed by raw milk (18%), and white cheese (8%). Listeria spp. were not isolated from the pasteurized milk. The most common species isolated were Listeria innocua (5.5%); the remaining Listeria isolates were Listeria ivanovi (3.5%), Listeria welshimeri (3%), and Listeria monocytogenes (0.5%). Listeria monocytogenes was detected in only raw milk.

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Section: Discussionmentioning

confidence: 96%

“…In other reports conducted with cheese in Turkey, isolation rates of Listeria spp. was 33.1% (Arslan and Özdemir, 2008) and 100% (Kaptan, 2016). These results mentioned above were higher than our findings.…”

Section: Discussionmentioning

confidence: 97%

Prevalence and Characterization of Listeria Species from Raw Milk and Dairy Products from Çanakkale Province

Şanlibaba

Tezel

2018

Turkish JAF Sci.Tech.

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“…Arslan and colleagues studied the prevalence of L. monocytogenes in Turkish white cheese house-cooked. The overall prevalence of various strains of Listeria in cheese was 1.33% and L. monocytogenes was isolated from 2.9% of the samples (20). In the study by Jalali et al on the frozen meat, fresh meat, beef and mutton samples, totally 4 (2.1%) L. monocytogenes were isolated (21).…”

Section: Discussionmentioning

confidence: 97%

Phenotypic and Genotypic Characteristics of Listeria monocytogenes Isolated From Dairy and Meat Products

Bahador¹,

Kalani²,

Valian³

et al. 2015

Avicenna J Clin Microbiol Infect

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Background: Listeria monocytogenes is a foodborne pathogen and a serious threat to the public health in the world. Consumption of traditional foods such as dairy and meat products can be a major reason for relative abundance and isolation of these bacteria. Objectives: The purpose of this study was to determine the phenotypic and genotypic characteristics of L. monocytogenes strains isolated from dairy and meat products. Materials and Methods: A total of 317 dairy products and meat-processed samples were collected. Antibiotic susceptibility test was performed on each sample by the disk diffusion method (Kirby Bauer). Five reference loci were used for typing of L. monocytogenes strains by MLVA (Multiple Locus VNTR Analysis) Technique. Results: A total of 24 L. monocytogenes isolates were collected from the dairy and meat products. Resistance of isolated L. monocytogenes strains to penicillin G were 54.54% (from dairy products) and 46.15% (from processed meat). Genetic relatedness of isolates were assessed by MLVA. Out of 13 different types, type 2 with 6 strains and type 3 with 4 strains, were the most common types. Conclusions: MLVA analysis showed that samples obtained from different sources could have similar genetic profile. As a result, administration of penicillin in patients with listeriosis (especially pregnant women) and antibiotic susceptibility test are recommended. The fast and accurate methods such as MLVA for tracking of pollution sources of L. monocytogenes are recommended during outbreaks.

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“…On the other hand MIC values for penicilin G was slightly higher than those reported by Zhang et al, (27) as 4 µg/ml. Penicillin G, ampicillin and gentamicin resistance of L. monocytogenes are mentioned in several studies (1,21,17,26).…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial susceptibility and serotype distribution of Listeria monocytogenes isolates obtained from raw milk cheese samples sold in Nigde

YILDIRIM¹

2014

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Summary:This study was designed to evaluate public health risks in respect to listeriosis due to consumption of local raw milk cheese sold in villages and public bazaars of Nigde. In addition, this study aims to contribute to the treatment process of listeriosis by determining serotype distribution and antimicrobial susceptibility profiles of the isolates. In the study, two of cheese (1 %) samples of total 200 raw milk cheese samples (100 white cheeses and 100 tulum cheeses) were found contamined with L. monocytogenes. Serotype distribution of the isolates were determined as 1/2a (white cheese isolate) and 4a (tulum cheese isolate). Finally, antimicrobial resistance profiles of the isolates against 11 antibiotics (tetracycline, ciprofloxacin, gentamicin, ampicillin, erythromycin, trimethoprim, vancomycin, chloramphenicol, nalidixic acid, penicillin G and sulphanilamide) were determined and the MIC values were specified by a microdilution method. Both of the isolates were found to be resistant to nalidixic acid but sensitive to the others analysed. As a result, although low L. monocytogenes prevalance rates were detected in this study, it is a public health concern to isolate serotype 1/2a which is secondly incriminated serotype to cause human listeriosis. In addition, it is important in terms of public health to continue surveillance of emerging antimicrobial resistance among L. monocytogenes isolated especially from foods of animal origin though incidence of antibiotic resistance in L. monocytogenes isolates is rare.Keywords: Antimicrobial susceptibility, cheese, Listeria monocytogenes, microdilution, serotype distribution.Niğde'de satışa sunulan çiğ sütten yapılmış peynir örneklerinden elde edilen Listeria monocytogenes izolatlarının serotip dağılımının ve antimikrobiyel duyarlılık profilinin belirlenmesi Özet: Bu çalışma, Niğde ili köy ve pazarlarında tüketime sunulan çiğ sütten yapılmış peynirlerin listeriozis açısından taşıdığı halk sağlığı risklerini değerlendirmek ve peynirlerden elde edilen izolatların serotip dağılımını ve antimikrobiyel duyarlılık profillerini belirleyerek tedavi sürecine katkıda bulunmak amacıyla planlanmıştır. Çalışma sonucunda 200 çiğ sütten yapılmış peynir örneğinden (100 beyaz peynir ve 100 tulum peyniri) ikisinin (% 1) L. monocytogenes ile kontamine olduğu bulunmuştur. L. monocytogenes izolatlarının serotip dağılımı 1/2a (beyaz peynir izolatı) ve 4a (tulum peyniri izolatı) olarak belirlenmiştir. Son olarak izolatların 11 antibiyotiğe (tetrasiklin, siprofloksasin, gentamisin, ampisilin, eritromisin, trimetoprim, vankomisin, kloramfenikol, nalidiksik asit, penisilin G ve sülfonilamid) karşı direnç profilleri belirlenmiş ve MIC değerleri mikrodilüsyon metodu ile ortaya konmuştur. İzolatların her ikisinin de nalidiksik asite dirençli, diğer antibiyotiklere duyarlı olduğu tespit edilmiştir. Sonuç olarak incelenen örneklerde L. monocytogenes prevalansının çok düşük düzeylerde bulunmasına karşın insan listeriozisinden ikinci sırada sorumlu tutulan 1/2a serotipinin belirlenmiş olması h...

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Prevalence and antimicrobial resistance of Listeria spp. in homemade white cheese

Cited by 90 publications

References 17 publications

Prevalence and Characterization of Listeria Species from Raw Milk and Dairy Products from Çanakkale Province

Prevalence and Characterization of Listeria Species from Raw Milk and Dairy Products from Çanakkale Province

Phenotypic and Genotypic Characteristics of Listeria monocytogenes Isolated From Dairy and Meat Products

Antimicrobial susceptibility and serotype distribution of Listeria monocytogenes isolates obtained from raw milk cheese samples sold in Nigde

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