Prevalence and biofilm-forming ability of Listeria monocytogenes in New Zealand mussel (Perna canaliculus) processing plants

Cruz, Cristina D.; Fletcher, Graham C.

doi:10.1016/j.fm.2011.06.014

Cited by 60 publications

(48 citation statements)

References 28 publications

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“…A clear genotypic partition can be observed between these clinical isolates and those from food or the environment. In our MVLST study, environmental, food, and human isolates had the same or similar STs, consistent with their closely related or identical pulsotypes (25). Identical genotypes of isolates from these sources confirm that local, environmentally persistent strains are epidemiologically important in listeriosis in New Zealand.…”

Section: Discussionsupporting

confidence: 73%

“…Different numbers represent different STs. c N, absence of inlA mutation; Y, presence of inlA mutation type 3; amino acid, amino acid position of inlA mutation type 3. d Cultures were isolated in our previous study (25). e Cultures were supplied by ESR.…”

Section: Resultsmentioning

confidence: 99%

“…Strains with the same PFGE profile (25) were included when they were obtained on different dates or from different locations within a seafood-processing plant. Clinical and nonseafood food isolates were supplied by Environmental Science & Research (ESR), Christchurch, New Zealand.…”

Section: Bacterial Isolatesmentioning

confidence: 99%

“…As a consequence, the risks that these strains pose to human health are unknown. Recently, a study of the prevalence and persistence of L. monocytogenes in seafood factories showed that in-house isolates are frequently found in the processing environment, but rarely in final products (25).…”

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confidence: 99%

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Listeria monocytogenes Associated with New Zealand Seafood Production and Clinical Cases: Unique Sequence Types, Truncated InlA, and Attenuated Invasiveness

Cruz

Pitman

Harrow

et al. 2014

Appl Environ Microbiol

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bListeriosis is caused by the food-borne pathogen Listeria monocytogenes, which can be found in seafood and processing plants. To evaluate the risk to human health associated with seafood production in New Zealand, multi-virulence-locus sequence typing (MVLST) was used to define the sequence types (STs) of 31 L. monocytogenes isolates collected from seafood-processing plants, 15 from processed foods, and 6 from human listeriosis cases. The STs of these isolates were then compared with those from a collection of seafood isolates and epidemic strains from overseas. A total of 17 STs from New Zealand clustered into two lineages: seafood-related isolates in lineages I and II and all human isolates in lineage II. None of the New Zealand STs matched previously described STs from other countries. Isolates (belonging to ST01-N and ST03-N) from mussels and their processing environments, however, were identical to those of sporadic listeriosis cases in New Zealand. ST03-N isolates (16 from mussel-processing environments, 2 from humans, and 1 from a mussel) contained an inlA premature stop codon (PMSC) mutation. Therefore, the levels of invasiveness of 22 isolates from ST03-N and the three other common STs were compared using human intestinal epithelial Caco-2 cell lines. STs carrying inlA PMSCs, including ST03-N isolates associated with clinical cases, had a low invasion phenotype. The close relatedness of some clinical and environmental strains, as revealed by identical MVLST profiles, suggests that local and persistent environmental strains in seafood-processing environments pose a potential health risk. Furthermore, a PMSC in inlA does not appear to give L. monocytogenes a noninvasive profile.

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Section: Discussionsupporting

confidence: 73%

Section: Resultsmentioning

confidence: 99%

Section: Bacterial Isolatesmentioning

confidence: 99%

mentioning

confidence: 99%

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Listeria monocytogenes Associated with New Zealand Seafood Production and Clinical Cases: Unique Sequence Types, Truncated InlA, and Attenuated Invasiveness

Cruz

Pitman

Harrow

et al. 2014

Appl Environ Microbiol

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“…It clearly demonstrated that factories harbor different populations of L. monocytogenes, but also that some of these may occur in more than one plant. (Cruz and Fletcher 2011). Listeria spp.…”

Section: Resultsmentioning

confidence: 99%

Occurrence of Listeria Species in Processing Equipments, Units and Frozen Fish of Fish Processing Factories

Kılınç¹

2015

J Food Health Sci

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Abstract:This study was performed to determine the presences of Listeria species in three fish processing factories in İzmir, Turkey. Gilt head seabream (Sparus aurata) has been processed in three factories and exported as frozen to other foreign countries. Listeria spp. expecially Listeria monocytogenes can be a point under consideration of fish processing factories while exporting. For this purpose; A total of 300 samples were examined for Listeria spp in three fish processing factories to determine the contamination levels of fish processing factories with Listeria spp. Samples were taken from units of fish processing factories such as (boxes, processing tables, floors) and equipments (processing coats, gloves) and also processed products (frozen fish). According to the results of this study, Listeria monocytogenes was isolated from 21 or 7% of the samples Listeria ivanovi was isolated from 15 or 5% of the samples and Listeria welshimeri/innocua was isolated from 2 or 0.6% of the samples collected from three factories. Listeria welshimeri/innocua was only isolated from the processing coats (2 or 11%) in factory A. However, Listeria monocytogenes was isolated from boxes (1 or 6%), processing tables (2 or 11%), floor (4 or 22%), processing coats (3 or 17%), gloves (6 or 33%) and frozen fish (5 or 50%) samples taken from the factory C. Except for frozen fish, Listeria ivanovi was isolated from boxes (7 or 39 %), processing tables (3 or 17%), floor (3 or 17%), processing coats (1 or 6 %) and gloves (1 or 6%) taken from the factory B. The incidence of Listeria species in the production line of fish processing factories points out that contamination can occur during fish processing stage. Therefore, Listeria spp. must be controlled during processing of fishery products. Proper cleaning and sanitation programme of fish processing factories must be applied. Samples must be taken and examined regularly from every units and equipments of fish processing factories to avoid the contamination and spread of Listeria spp in fish processing factories. Cleaning of fish processing equipments and fish processing units could be very important in order to avoid the occurrence of cross contamination of the fishery products. It must be taken hygienic precautions because of the contamination of Listeria spp. Besides HACCP plan must be applied to prevent recontamination of Listeria species to fishery products and it must be also applied to eradicate Listeria species from the fish processing factories.

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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 and biofilm-forming ability of Listeria monocytogenes in New Zealand mussel (Perna canaliculus) processing plants

Cited by 60 publications

References 28 publications

Listeria monocytogenes Associated with New Zealand Seafood Production and Clinical Cases: Unique Sequence Types, Truncated InlA, and Attenuated Invasiveness

Listeria monocytogenes Associated with New Zealand Seafood Production and Clinical Cases: Unique Sequence Types, Truncated InlA, and Attenuated Invasiveness

Occurrence of Listeria Species in Processing Equipments, Units and Frozen Fish of Fish Processing Factories

Listeria monocytogenes in the Food Processing Environment

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