Prevalence and location of Listeria monocytogenes in farmed rainbow trout

Miettinen, Hanna; Wirtanen, Gun

doi:10.1016/j.ijfoodmicro.2005.01.013

Cited by 63 publications

(53 citation statements)

References 21 publications

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“…All the strains were confirmed as L. innocua. Listeria monocytogenes has been isolated worldwide, with various prevalence ranges from a variety of fish (Ben Embarek 1994;Kwiatek 2004;Medrala et al 2003;Miettinen and Wirtanen 2005;Herrera et al 2006;Jinneman et al 2007), but as in other raw foods, fishery products more frequently contain L. innocua than L. monocytogenes. Since both species share ecological niches, the presence of L. innocua is considered an indicator of possible contamination with L. monocytogenes (González-Rodríguez et al 2002).…”

Section: S97mentioning

confidence: 99%

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Effects of Modified Atmosphere Packaging on the Microbiological Properties of Fresh Common Carp (Cyprinus carpio L.)

Hudecová¹,

Buchtová²,

Steinhauserova³

2010

Acta Vet. Brno

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The aim of this study was to compare the growth rate of total viable counts (TVC), psychrotrophic viable counts (PVC), coliform bacteria and E. coli in portions of fresh common carp (Cyprinus carpio L.) under two different modified atmosphere packaging (experimental MAP1: 70% N 2 /30% CO 2; experimental MAP2: 80% O 2 /20% CO 2 ) and air (control samples) stored at +4 ± 0.5 °C, and to determine their shelf life. The presence of pathogens (Salmonella spp. and Listeria monocytogenes) was also surveyed in this study. A total of 360 portions from 90 common carp were examined. Laboratory analyses were performed on storage day 0 (production day) and days 3, 7 and 10. As compared to air packaging, the numbers of TVC and PVC were significantly lower (p < 0.001) in both modified atmosphere packaging (MAP) on storage days 7 and 10; coliform bacteria were significantly lower only on day 7. E. coli counts in fresh carp during storage were generally low, showing levels of < 1 log cfu/g. Salmonella spp. and Listeria monocytogenes were not detected in any of the examined samples. All the strains of Listeria spp. were identified as Listeria innocua. According to TVC values and sensory changes, the shelf life of carp portions was determined as 6 days in MAP1, 8 days in MAP2 and 3 days in air.

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Section: S97mentioning

confidence: 99%

“…and Listeria monocytogenes have been isolated from various species of fish and fish products around the world (Jinneman et al 2007). The prevalence of L. monocytogenes in raw fresh fish has been analysed in many studies and varies from zero to about 30% (Miettinen and Wirtanen 2005).…”

mentioning

confidence: 99%

Effects of Modified Atmosphere Packaging on the Microbiological Properties of Fresh Common Carp (Cyprinus carpio L.)

Hudecová¹,

Buchtová²,

Steinhauserova³

2010

Acta Vet. Brno

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“…According to Miettinen and Wirtanen (2005), the prevalence of L. monocytogenes varied greatly between different fish farms of rainbow trout in Finland, from 0 to 100% in pooled samples and from 0 to 75%, according to individually studied fish samples. The prevalence of L. monocytogenes, L. innocua, L. seeligeri andL.…”

Section: Panda and Gargmentioning

confidence: 99%

Prevalence of Listeria spp. in freshwater T\s\v(Oncorhynchus my kiss and Carassius gibelio) and the environment offish markets in Northern Greece

Papadopoulos¹,

Abrahim

Sergelidis

et al. 2017

J Hellenic Vet Med Soc

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In this study, a total of 405 samples from freshwater fish, personnel and environment were collected from retail fish markets in three cities in Northern Greece and they were examined for the presence of Listeria spp. They consisted of 136 samples from the skin and 136 from the flesh of 71 rainbow trout (Oncorhynchus mykiss) and 65 gibel carps (Carassius gibelio), 20 from workers' hands, 27 from workers' knives, 22 from working surfaces, 29 from wooden boxes, 15 from plastic boxes, 18 from floor surfaces and 2 from drainage lids. Listeria spp. was isolated from 10.62% of the samples, L. monocytogenes were 0.99%, 4.69% L. seeligeri and 4.94% L. innocua, respectively. L. monocytogenes was isolated from 3.54% of the environmental samples and none from fresh water fish and workers hands' samples. Listeria spp. was isolated from 1.54% of gibel carp flesh (1.54% L. seeligeri), from 18.46% of gibel carp skin (10.77% L. seeligeri and 7.69% L. innocua) and from 8.45% from rainbow trout skin samples (1.41% L. seeligeri and 7.04% L. innocua). The higher rate of isolation of Listeria spp. from the environmental samples emphasises the importance of sanitary conditions in order to reduce the risk of contamination by L. monocytogenes at the retail level.

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“…Listeria monocytogenes in variety of foods, particularly milk and dairy products, animal products, ready-to-eat foods, fruit and vegetables has been well documented (26,32,52,57,98,137,152,192,196,206).In USA and Canada, widespread presence and high prevalence of L monocytogenes in bulk tank raw milk samples with incidence variations from 4 -12.6% has been reported in a number of studies (74,108,217) Such a presence has raised concerns about L. monocytogenes survival and persistence in food processing facilities as a result of poor sanitation practices or ability of Lm to grow under abusive conditions. Persistent presence of this microorganism could lead to biofilm formation and possible cross contamination at the farm, plant or during the transport and storage whether the milk is pasteurized or not (5, 145, 159).…”

Section: Assessment Of L Monocytogenes Growth In Raw and Pasteurisedmentioning

confidence: 99%

“…">Assessment of L. monocytogenes growth in raw and pasteurised milk. Presence ofListeria monocytogenes in variety of foods, particularly milk and dairy products, animal products, ready-to-eat foods, fruit and vegetables has been well documented (26,32,52,57,98,137,152,192,196,206).In USA and Canada, widespread presence and high prevalence of L monocytogenes in bulk tank raw milk samples with incidence variations from 4 -12.6% has been reported in a number of studies (74, Table 3.1.1. …”

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confidence: 98%

Identification of the mechanisms of resistance and potential cross resistance of Listeria monocytogenes upon adaptation to different antimicrobials

Rakić-Martinez¹

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ACKNOWLEDGMENTSI would like to thank Dr. Vera Katić for being my mentor, not only through PhD studies, but in my undergraduate years as well. Her objectivity, articulate thinking and dedication to work inspired me to keep moving forward even after long, tiresome days in the lab. I will forever appreciate Dr. Katic's encouragement to pursue personal happiness and her support in important life decisions.I am forever grateful to Dr. Sophia Kathariou for accepting me in her lab and making me feel at home while far from it. Her incredible ability to find the best solutions when things were not looking promising and open completely new horizons along with her creativity and knowledge made science so attractive. Looking at all the great, bright and skilful young people pursuing their dreams under Dr. Kathariou's guidance makes me very proud for being a part of it.My appreciation also goes to Dr. Lepšanović and Dr. Mišić for accepting to be members of the committee. I am thankful to all my lab mates and to Ms. Robin Siletzky for her solid support throughout my work. A special thanks to Dr. Vikrant Dutta for his patience, willingness to help and his much admired teaching skills.Lastly and foremost I would like to thank my family. To my dear parents Ljubo and Zora whose unconditional love, support and presence whenever I needed them have been and will always be my motive to be better. To my big brother Zoran, who has been, and is my role model, but still owes me German lessons. Finally, I want to thank my boys, my beloved husband Sergio and my precious son Gregory, who have been an endless source of energy, support and love. Thanks for being my wingmen guys! ABSTRACTAbility to contaminate ready-to-eat, highly processed, cold-stored food products, relatively high fatality rate and environmental adaptations define .Listeria monocytogenes as a challenging foodborne pathogen of high public health significance. Listeria's adaptations and prolonged persistence in food processing facilities are a key link to contamination of foods.In recent years, bacterial multidrug resistance has been recognized as an emerging health challenge. Exposure to antimicrobials (antibiotics, disinfectants or environmentally ubiquitous heavy metals), may provide selective pressures for resistance with accompanying cross-resistance and increase in environmental fitness.In this work I addressed some of the possible mechanisms of adaptations that may contribute to persistence of L. monocytogenes in the environment as well as to survival and growth in different foods. This includes adaptations to heavy metals such as cadmium, disinfectants such as benzalkonium chloride (BC), selected antibiotics (e.g. the fluoroquinolone ciprofloxacin) and other toxic compounds (e.g. tetraphenyl-phosponium, often used as an anti-carcinogenic and efflux pump substrate). In order to characterize the impact of multidrug resistance on survival and growth of L. monocytogenes in different foods, we tested mutants adapted to higher concentrations of antibiotic ciprofloxacin and ...

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Prevalence and location of Listeria monocytogenes in farmed rainbow trout

Cited by 63 publications

References 21 publications

Effects of Modified Atmosphere Packaging on the Microbiological Properties of Fresh Common Carp (Cyprinus carpio L.)

Effects of Modified Atmosphere Packaging on the Microbiological Properties of Fresh Common Carp (Cyprinus carpio L.)

Prevalence of Listeria spp. in freshwater T\s\v(Oncorhynchus my kiss and Carassius gibelio) and the environment offish markets in Northern Greece

Identification of the mechanisms of resistance and potential cross resistance of Listeria monocytogenes upon adaptation to different antimicrobials

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