Determination of the presence and antibiotic resistance of listeria species and aerobic mesophilic bacteria count of cow milks

Babacan, Orkun

doi:10.33188/vetheder.714491

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…( 2022 ), Korsak et al. ( 2012 ) and Babacan ( 2021 ) also showed that all strains of L. innocua and L. monocytogenes from bulk tank milk and all strains of L. monocytogenes , L. innocua and L. ivanovii isolated from cow milk were susceptible to AM. On the other hand, reports of penicillin group resistance at both high and low levels have been made by some authors.…”

Section: Discussionmentioning

confidence: 89%

Antimicrobial resistance and prevalence of Listeria species from raw milk and dairy products in Burdur, Turkey

Erol,

Polat,

Soyuçok

et al. 2024

Veterinary Medicine & Sci

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ObjectivesWorldwide, but especially in emerging nations, concerns about food safety pose a serious obstacle to societal and economic progress. This research aimed to examine the prevalence of Listeria spp. in raw milk and dairy products in Burdur, as well as the presence of genes associated with biofilm formation and antibiotic resistance in the isolates.MethodsA total of 185 samples, including raw milk, curd, cream, butter, yogurt and cheese, were randomly collected in Burdur. The enrichment and isolation methods specified by the United States Department of Agriculture was used to identify Listeria species in milk and dairy product samples. Culture‐positive strains were identified as Listeria genus and as species by PCR. Antibiotic susceptibility of the isolates was evaluated against 14 antibiotics using the disc diffusion technique (EUCAST).ResultsOf them, 2.2% (4/185) were positive for Listeria spp. Listeria species were isolated from cheese and yogurt samples. Two of them were Listeria innocua 1.1% (2/185), one was Listeria ivanovii 0.5% (1/185) and the other was Listeria welshimeri 0.5% (1/185). As a result of multiplex PCR of the biofilm genotypic marker luxS and flaA genes, the flaA gene was detected in three of four isolates, the luxS gene was detected in one isolate, and these two genes were not found in one isolate. Although all isolates were resistant to gentamicin and rifampicin, they also showed multidrug resistance.ConclusionThis study revealed that the diversity of prevalence of Listeria spp. in Burdur requires microbial risk assessment in the milk and dairy products value chain and the need to focus on the problem of multiple antibiotic resistance.

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Section: Discussionmentioning

confidence: 89%

Antimicrobial resistance and prevalence of Listeria species from raw milk and dairy products in Burdur, Turkey

Erol,

Polat,

Soyuçok

et al. 2024

Veterinary Medicine & Sci

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Investigation of the Compliance of the Milking Routine and the Pulsator’s Working Characteristics to Them Milking Technique in the Bozanönü District of Isparta Province

Milimo,

Güngör,

Bayhan

2024

Lecture Notes in Civil Engineering

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Virulence Characteristics and Distribution of the Pathogen Listeria ivanovii in the Environment and in Food

et al. 2022

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Listeria ivanovii and L. monocytogenes, are the only pathogenic species of the genus Listeria and share many virulence factors and mechanisms of pathogenicity. L. ivanovii shows host tropism towards small ruminants and rodents and much lower virulence for humans compared to L. monocytogenes. However, severe infections caused by L. ivanovii, resulting in bacteremia, abortion and stillbirth, occasionally occurred in immunocompromised persons and in pregnant women, while in immunocompetent hosts L. ivanovii can cause gastroenteritis. In this review, the updated knowledge on virulence aspects and distribution of L. ivanovii in the environment and in food is summarized. Recent research on its virulence characters at genome level gave indications on how pathogenicity evolved in this bacterial species. As for L. monocytogenes, L. ivanovii infections occurred after the ingestion of contaminated food, so an overview of reports regarding its distribution in food products was carried out to obtain indications on the categories of foods exposed to contamination by L. ivanovii. It was found that a wide variety of food products can be a source of this microorganism and that, like L. monocytogenes, L. ivanovii is able to persist in the food production environment. Studies on its ability to grow in enrichment and isolation media suggested that its occurrence in nature might be underestimated. Moreover, virulence varies among strains for differences in virulence character regulation, presence/absence of genetic regions and the possible instability of a Listeria pathogenicity genomic island, LIPI-2, which is unique to L. ivanovii. We can conclude that L. ivanovii, as a possible pathogen for animals and humans, requires more focused investigations regarding its occurrence in the environment and in food and on intra-species variability of pathogenic potential.

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Determination of the presence and antibiotic resistance of listeria species and aerobic mesophilic bacteria count of cow milks

Cited by 3 publications

References 21 publications

Antimicrobial resistance and prevalence of Listeria species from raw milk and dairy products in Burdur, Turkey

Antimicrobial resistance and prevalence of Listeria species from raw milk and dairy products in Burdur, Turkey

Investigation of the Compliance of the Milking Routine and the Pulsator’s Working Characteristics to Them Milking Technique in the Bozanönü District of Isparta Province

Virulence Characteristics and Distribution of the Pathogen Listeria ivanovii in the Environment and in Food

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