Prevalence, genetic diversity and antimicrobial resistance of Listeria monocytogenes isolated from ready-to-eat meat products in Nanjing, China

Wang, Guangyu; Qian, Wenjuan; Zhang, Xinxiao; Wang, Huhu; Ye, Keping; Bai, Yun; Zhou, Guanghong

doi:10.1016/j.foodcont.2014.07.057

Cited by 74 publications

(52 citation statements)

References 61 publications

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“…; Wang et al . ). This study corroborate with previous studies that found internalin genes in L. monocytogenes isolates from processed fish and seafood processing environment (Kovacevic et al .…”

Section: Resultsmentioning

confidence: 97%

“…; Wang et al . ). This study showed that 28% and 40% of 1/2b and 4b isolates carried the Listeriolysin S gene respectively.…”

Section: Resultsmentioning

confidence: 97%

“…; Wang et al . ) and four antibiotic discs were placed per plate. Pure frozen cultures were grown in Trypticase‐Soy agar supplemented with 0·6% yeast extract overnight at 37°C and the 3–5 colonies were adjusted until a 0·5 McFarland turbidity in 5 ml normal saline tubes.…”

Section: Methodsmentioning

confidence: 99%

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Characterization of Listeria monocytogenes from three countries and antibiotic resistance differences among countries and Listeria monocytogenes serogroups

Obaidat

Salman

Lafi

et al. 2015

Lett Appl Microbiol

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A total of 104 Listeria monocytogenes isolates from 330 fish samples from three countries were characterized by multiplex PCR for serogrouping and virulence markers determination and tested for antibiotics resistance. A 53·8% of the isolates belonged to serogroup 1/2a, 3a; 32% belonged to 1/2b, 3b, 7; 14·4% belonged to 4b, 4d, 4e and 1% belonged to 1/2c, 3c. All isolates exhibited resistance to at least one antibiotic but the resistance rates varied among countries. The isolates exhibited high resistance to penicillin, rifampicin, clindamycin, erythromycin and tetracycline, but low resistance to amoxicillin-clavulanic acid, streptomycin, sulfamethoxazole-trimethoprim, gentamicin, chloramphenicol and kanamycin. When comparing countries, the resistance rate for rifampicin, clindamycin, erythromycin, tetracycline, amoxicillin-clavulanic acid varied among countries. When comparing serogroup, 1/2a, 3a exhibited the highest resistance to clindamycin, erythromycin, tetracycline and vancomycin while serogroup 4b, 4d, 4e exhibited the highest resistance to amoxicillin-clavulanic acid. All isolates carried inlA, inlC, inlJ and lmo2672. Listeriolysin S was carried by 42 and 30% of 4b and 1/2b isolates respectively. Significance and impact of the study: This is one of few studies to correlate antibiotic resistance with Listeria monocytogenes serogroups. The study also compared the antibiotic resistance and serogroups of L. monocytogenes isolates from three countries in one single study. The findings of this study will be helpful in improving data on the antibiotics resistance of L. monocytogenes in developing countries and enriches the epidemiological and public health studies of L. monocytogenes.

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Section: Resultsmentioning

confidence: 97%

“…; Wang et al . ). This study showed that 28% and 40% of 1/2b and 4b isolates carried the Listeriolysin S gene respectively.…”

Section: Resultsmentioning

confidence: 97%

See 1 more Smart Citation

Characterization of Listeria monocytogenes from three countries and antibiotic resistance differences among countries and Listeria monocytogenes serogroups

Obaidat

Salman

Lafi

et al. 2015

Lett Appl Microbiol

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“…Immunocompromised individuals, pregnant women and the elderly are those population groups most susceptible to this foodborne pathogen microorganism (Magalhães et al, 2014). The ubiquity of this organism and its ability to grow in the form of biofilms enables it to be present in food processing plants and foods, being ready-to-eat foods those most likely to be contaminated (Pilchov a et al, 2014;Wang et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

When nanoemulsified, d-limonene reduces Listeria monocytogenes heat resistance about one hundred times

2016

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a b s t r a c tThe application of oily antimicrobials in form of nanoemulsion has been proved to solve the problem of their immiscibility in aqueous media, still preventing microbial growth and even improving the antimicrobial effect observed when applied directly. At present, only a few documented studies have evaluated the combined effect of nanoemulsions with other factors of stress for the microorganism. The present research shows very promising results on the combination of nanoemulsified D-limonene with thermal treatments on the inactivation of Listeria monocytogenes. The thermal resistance of L. monocytogenes was reduced two to five times when 0.5 mM D-limonene was added directly to the heating medium. However, when the same concentration of D-limonene was present in the heating medium in form of nanoemulsion, the heat resistance was reduced by one hundred times at all heating temperatures tested. The addition of nanoemulsified antimicrobials would allow to reduce greatly the intensity of the thermal treatments currently applied in the food processing industry.

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“…For example, certain L. monocytogenes MLST types (sequence type [ST] 9 and ST121) have been seen to be common in food contamination and seem to have adapted to the meat processing environment (Martin et al 2014 ). In a recent publication which isolated and characterised 33 L. monocytogenes strains from RTE foods in China, 11 MLST types were found and 7 of these were shown to be previously established MLST types isolated in China for the fi rst time (Wang et al 2015 ). MLST is less discriminatory than PFGE.…”

Section: Multilocus Sequence Typingmentioning

confidence: 99%

Listeria monocytogenes in the Food Processing Environment

Jordan

Leong

Ordóñez

2015

SpringerBriefs in Food, Health, and Nutrition

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Springer Briefs in Food, Health, and Nutrition present concise summaries of cutting edge research and practical applications across a wide range of topics related to the fi eld of food science, including its impact and relationship to health and nutrition.We are especially interested in how these areas impact or are related to health and nutrition.Featuring compact volumes of 50 to 125 pages, the series covers a range of content from professional to academic. Typical topics might include:• A timely report of state-of-the art analytical techniques • A bridge between new research results, as published in journal articles, and a contextual literature review • A snapshot of a hot or emerging topic • An in-depth case study • A presentation of core concepts that students must understand in order to make independent contributionsMore information about this series at

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Prevalence, genetic diversity and antimicrobial resistance of Listeria monocytogenes isolated from ready-to-eat meat products in Nanjing, China

Cited by 74 publications

References 61 publications

Characterization of Listeria monocytogenes from three countries and antibiotic resistance differences among countries and Listeria monocytogenes serogroups

Characterization of Listeria monocytogenes from three countries and antibiotic resistance differences among countries and Listeria monocytogenes serogroups

When nanoemulsified, d-limonene reduces Listeria monocytogenes heat resistance about one hundred times

Listeria monocytogenes in the Food Processing Environment

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