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Biography Trond Møretrø

Research work I belong to the microbiology group at Nofima at Ås where I mainly work with projects focusing on understanding how microorganisms grow and survive in food and in the food industry. More specifically I work with stress responses to acid, disinfectants, etc. and biofilm formation of food associated bacteria. For this purpose we are using both general microbiological methods and molecular methods, recently including whole genome sequencing. I am also involved in work using spectroscopy (FT-IR) for classification and identification of microorganisms. Much of my work involves applied projects together with food industry with focus on food quality and food safety. Examples are industry project with Listeria monocytogenes, Salmonella, foodborne viruses and quality reducing bacteria and moulds. We work with suppliers of cleaning agents and disinfectants to improve the hygiene in the food industry.Education MS in general microbiology from University of Bergen, Norway (1995) and PhD in microbiology/biotechnology (studies on bacteriocins from lactic acid bacteria) from Norwegian University of Life Sciences, Norway (2000).

Trond Møretrø has 94 publications at Nofima:

Listeria monocytogenes biofilm removal using different commercial cleaning agents

Fagerlund, Annette; Heir, Even; Møretrø, Trond; Langsrud, Solveig

2020

Is visual motivation for cleaning surfaces in the kitchen consistent with a hygienically clean environment?

Møretrø, Trond; Martens, Lydia; Teixeira, Paula; Ferreira, Vânia B.; Maia, Rui; Maugesten, Tove; Langsrud, Solveig

2020

Evaluation of ATP bioluminescence‐based methods for hygienic assessment in fish industry.

Møretrø, Trond; Normann, Marius A.; Sæbø, Håkon Rydland; Langsrud, Solveig

2019

Listeria monocytogenes i sushi - vurdering av helseråd til gravide og andre utsatte grupper. Vitenskapelig uttalelse fra faggruppe for hygiene og smittestoffer i Vitenskapskomiteen for mat og miljø

Skjerdal, Olaug Taran; Aspholm, Marina; Grahek-Ogden, Danica; Jore, Solveig; Møretrø, Trond; Kapperud, Georg; Melby, Kjetil K.; Robertson, Lucy; Nesbakken, Truls

2019

Factors that can contribute to spread of CWD – an update on the situation in Nordfjella, Norway. Opinion of the Panel on biological hazards of the Norwegian Scientific Committee for Food and Environment

Ytrehus, Bjørnar; Grahek-Ogden, Danica; Strand, Olav; Tranulis, Michael A.; Mysterud, Atle; Aspholm, Marina; Jore, Solveig; Kapperud, Georg; Møretrø, Trond; Nesbakken, Truls; Robertson, Lucy; Melby, Kjetil K.; Skjerdal, Olaug Taran

2018

Complete genome sequences of six Listeria monocytogenes sequence type 9 isolates from meat processing plants in Norway

Fagerlund, Annette; Langsrud, Solveig; Moen, Birgitte; Heir, Even; Møretrø, Trond

2018

Tolerance to quaternary ammonium compound disinfectants may enhance growth of Listeria monocytogenes in the food industry

Møretrø, Trond; Schirmer, Bjørn Christian; Heir, Even; Fagerlund, Annette; Hjemli, Pernille; Langsrud, Solveig

2017

Gode råd mot Listeria i kjøtt

Møretrø, Trond; Langsrud, Solveig

2016

Contamination of salmon fillets and processing plants with spoilage bacteria

Møretrø, Trond; Moen, Birgitte; Heir, Even; Hansen, Anlaug Ådland; Langsrud, Solveig

2016

Nyttige veiledere om Listeria i kjøttproduksjon

Hægermark, Wenche Aale; Møretrø, Trond

2016

Biofilm matrix composition affects the susceptibility of food associated staphylococci to cleaning and disinfection agents

Fagerlund, Annette; Langsrud, Solveig; Heir, Even; Mikkelsen, Maria Ingeborg; Møretrø, Trond

2016

Coaggregation occurs between microorganisms isolated from different environments

Stevens, Michael R. E.; Ting, L. Luo; Vornhagen, Jay; Jakubovics, Nicholas S.; Gilsdorf, Janet; Marrs, Carl; Møretrø, Trond; Rickard, A.H.

2015

Listeria i kjøttindustrien - fokus på smitteveier

Schirmer, Bjørn Christian; Møretrø, Trond

2015

Coaggregation occurs between microorganisms isolated from different environments

Stevens, Michael R. E.; Luo, Ting L.; Vornhagen, Jay; Jacubovics, Nick; Gilsdorf, Janet; Marrs, Carl; Møretrø, Trond; Rickhard, Alexander H.

2015

Intra- and inter-species interactions within biofilms of important foodborne bacterial pathogens

Giaouris, Efstathios; Heir, Even; Desvaux, Mickaël; Hébraud, Michel; Møretrø, Trond; Langsrud, Solveig; Doulgeraki, Agapi; Nychas, George-John; Kačániová, Miroslava; Czaczyk, Katarzyna; Ölmez, Hülya; Simões, Manuel

2015

The effects of different hygiene procedures in reducing bacterial contamination in a model domestic kitchen

Røssvoll, Elin; Langsrud, Solveig; Bloomfield, S; Moen, Birgitte; Heir, Even; Møretrø, Trond

2015

Coaggregation between Rhodococcus and Acinetobacter strains isolated from the food industry

Møretrø, Trond; Sharifzadeh, Shahab; Langsrud, Solveig; Heir, Even; Rickard, A.H.

2015

Attachment and biofilm formation by foodborne bacteria in meat processing environments: Causes, implications, role of bacterial interactions and control by alternative novel methods

Giaouris, E. D.; Heir, Even; Hébraud, M.; Chorianopoulos, Nikos; Langsrud, Solveig; Møretrø, Trond; Habimana, Olivier; Desvaux, Mickaël; Renier, S.; Nychas, George-John

2014

Persistence of foodborne pathogens and their control in primary and secondary food production chains

Larsen, Marianne Halberg; Dalmasso, Marion; Ingmer, Hanne; Langsrud, Solveig; Malakauskas, Mindaugas; Mader, Anneluise; Møretrø, Trond; Smole Možina, Sonja; Rychli, Kathrin; Wagner, Martin; Wallace, R. John; Zentek, Jurgen; Jordan, Kieran

2014

Toxin production and growth of pathogens subjected to temperature fluctuations simulating consumer handling of cold cuts

Røssvoll, Elin ; Rønning, Helene; Granum, Per Einar; Møretrø, Trond; Røine, Marianne; Langsrud, Solveig

2014

The persistence of Salmonella following desiccation under feed processing environmental conditions: a subject of relevance

Habimana, Olivier; Nesse, Live Lingaas; Møretrø, Trond; Berg, Kristin; Heir, Even; Vestby, Lene Karine; Langsrud, Solveig

2014

Use of used vs. fresh cheese brines and the effect of pH and salt concentration on the survival of Listeria monocytogenes

Schirmer, Bjørn Christian; Heir, Even; Lindstedt, Bjørn Arne; Møretrø, Trond; Langsrud, Solveig

2014

Consumer preferences, internal color and reduction of shigatoxigenic Escherichia coli in cooked hamburgers

Røssvoll, Elin Halbach; Sørheim, Oddvin; Heir, Even; Møretrø, Trond; Olsen , Nina Veflen; Langsrud, Solveig

2014

Cooking hamburgers at home - consumer preferences, internal color and survival of shigatoxigenic Eschericia coli

Røssvoll, Elin ; Sørheim, Oddvin; Heir, Even; Møretrø, Trond; Olsen , Nina Veflen; Langsrud, Solveig

2013

FTIR spectroscopic characterization of differently cultivated food related yeasts

Shapaval, Volha; Walczak, Beata; Gognies, Sabine; Møretrø, Trond; Suso, Henri-Pierre; Åsli, Anette Wold; Belarbi, Abdelkader; Kohler, Achim

2013

Characterization of food spoilage fungi by FTIR spectroscopy

Shapaval, Volha; Schmitt, J.; Møretrø, Trond; Suso, HP; Skaar, Ida; Åsli, Anette Wold; Lillehaug, Dag; Kohler, Achim

2013

Microarray-based transcriptome of Listeria monocytogenes adapted to sublethal concentrations of acetic acid, lactic acid, and hydrochloric acid

Tessema, Girum Tadesse; Møretrø, Trond; Snipen, Lars; Heir, Even; Holck, Askild lorentz; Naterstad, Kristine; Axelsson, Lars

2012

Antibacterial activity of cutting boards containing silver

Møretrø, Trond; Høiby-Pettersen, Gunn Sigrid; Halvorsen, Catherine Kjølberg; Langsrud, Solveig

2012

Responses of Staphylococcus Aureus to Environmental Stresses

Rode, Tone Mari; Møretrø, Trond; Langsrud, Solveig; Holck, Askild lorentz

2012

Control of Salmonella in food related environments by chemical disinfection

Møretrø, Trond; Heir, Even; Nesse, Live Lingaas; Vestby, Lene Karine; Langsrud, Solveig

2012

Assessment of the antibacterial activity of a triclosan-containing cutting board

Møretrø, Trond; Høiby-Pettersen, Gunn Sigrid; Habimana, Olivier; Heir, Even; Langsrud, Solveig

2011

Global Transcriptional Analysis of Spontaneous Sakacin P-Resistant Mutant Strains of Listeria monocytogenes during Growth on Different Sugars

Tessema, Girum Tadesse; Møretrø, Trond; Snipen, Lars-Gustav; Axelsson, Lars; Naterstad, Kristine

2011

Chlorhexidine compounds in cosmetic products Risk assessment of antimicrobial and antibiotic resistance development in microorganisms. Opinion of the Panel on Biological Hazards of the Norwegian Scientific Committee for Food Safety

Lunestad, Bjørn Tore; Møretrø, Trond; Hegstad, Kristin; Langsrud, Solveig; Scheie, Anne Aamdal; Kapperud, Georg; Lassen, Jørgen Fr; Nygård, Karin Maria; Robertson, Lucy; Nesbakken, Truls; Olsvik, Ørjan; Tranulis, Michael A.; Tryland, Morten; Rimstad, Espen

2010

Helserisikovurdering av PT73 (TM) bakteriebiomasse (EFSA/GMO/FR/2008/59) fra Ajinomoto Eurolysine 1. innspillsrunde. Uttalelse fra Faggruppe for genmodifiserte organismer og Faggruppe for fôr til terrestriske og akvatiske dyr Vitenskapskomiteen for mattrygghet

Berdal, Knut G; Bernhoft, Aksel; Hemre, Gro Ingunn; Holck, Askild Lorentz; Nes, Ingolf; Nielsen, Kaare Magne; Amlund, Heidi; Bøhn, Thomas; Clarke, Jihong; Gifstad, Tron Øystein; Jenssen, Bjørn Munro; Klungland, Helge; Linnestad, Casper; Meadow, Richard; Mikalsen, Arne; Myhr, Anne Ingeborg; Møretrø, Trond; Nerland, Audun Helge; Nesse, Live Lingaas; Sorteberg, Hilde-Gunn Opsahl; Stabbetorp, Odd Egil; Svihus, Birger; Thrane, Vibeke; Torrissen, Ole; Vikse, Rose; Aursand, Marit

2010

Helserisikovurdering av PL73 (LM) bakteriebiomasse (EFSA/GMO/FR/2008/61) fra Ajinomoto Eurolysine 1. innspillsrunde. Uttalelse fra Faggruppe for genmodifiserte organismer og Faggruppe for fôr til terrestriske og akvatiske dyr Vitenskapskomiteen for mattrygghet

Berdal, Knut G; Bernhoft, Aksel; Hemre, Gro Ingunn; Holck, Askild Lorentz; Nes, Ingolf; Nielsen, Kaare Magne; Amlund, Heidi; Bøhn, Thomas; Clarke, Jihong; Gifstad, Tron Øystein; Jenssen, Bjørn Munro; Klungland, Helge; Linnestad, Casper; Meadow, Richard; Mikalsen, Arne; Myhr, Anne Ingeborg; Møretrø, Trond; Nerland, Audun Helge; Nesse, Live Lingaas; Sorteberg, Hilde-Gunn Opsahl; Stabbetorp, Odd Egil; Svihus, Birger; Thrane, Vibeke; Torrissen, Ole; Vikse, Rose; Aursand, Marit

2010

Helserisikovurdering av PL73 E. coli (LYS) bakteriebiomasse (EFSA/GMO/FR/2007/40) fra Ajinomoto Eurolysine. Uttalelse fra Faggruppe for genmodifiserte organismer og Faggruppe for fôr til terrestriske og akvatiske dyr Vitenskapskomiteen for mattrygghet

Berdal, Knut G; Bernhoft, Aksel; Hemre, Gro Ingunn; Nes, Ingolf; Nielsen, Kaare Magne; Amlund, Heidi; Clarke, Jihong; Gifstad, Tron Øystein; Jenssen, Bjørn Munro; Klungland, Helge; Linnestad, Casper; Mikalsen, Arne; Myhr, Anne Ingeborg; Møretrø, Trond; Nerland, Audun Helge; Nesse, Live Lingaas; Sorteberg, Hilde-Gunn Opsahl; Stabbetorp, Odd Egil; Svihus, Birger; Thrane, Vibeke; Torrissen, Ole; Aursand, Marit

2010

Assessment of the Fish Silage Processing Method (FSPM) for treatment of category 2 and 3 material of fish origin. Opinion of the Panel on Animal Feed of the Norwegian Scientific Committee for Food Safety

Møretrø, Trond; Hjeltnes, Brit; Lunestad, Bjørn Tore; Nesse, Live Lingaas; Skaar, Ida; Amlund, Heidi; Bernhoft, Aksel; Hemre, Gro Ingunn; Jenssen, Bjørn Munro; Svihus, Birger; Torrissen, Ole; Aursand, Marit

2010

Helserisikovurdering av PT73 E. coli (THR) bakteriebiomasse (EFSA/GMO/FR/2007/44) fra Ajinomoto Eurolysine. Uttalelse fra Faggruppe for genmodifiserte organismer og Faggruppe for fôr til terrestriske og akvatiske dyr Vitenskapskomiteen for mattrygghet

Berdal, Knut G; Bernhoft, Aksel; Hemre, Gro Ingunn; Nes, Ingolf; Nielsen, Kaare Magne; Amlund, Heidi; Clarke, Jihong; Gifstad, Tron Øystein; Jenssen, Bjørn Munro; Klungland, Helge; Linnestad, Casper; Mikalsen, Arne; Myhr, Anne Ingeborg; Møretrø, Trond; Nerland, Audun Helge; Nesse, Live Lingaas; Sorteberg, Hilde-Gunn Opsahl; Stabbetorp, Odd Egil; Svihus, Birger; Thrane, Vibeke; Torrissen, Ole; Aursand, Marit

2010

Micro ecosystems from feed industry surfaces: a survival and biofilm study of Salmonella versus host resident flora strains

Habimana, Olivier; Møretrø, Trond; Langsrud, Solveig; Vestby, Lene Karine; Nesse, Live Lingaas; Heir, Even

2010

Responses of Staphylococcus aureus exposed to HCl and organic acid stress

Rode, Tone Mari; Møretrø, Trond; Langsrud, Solveig; Langsrud, Øyvind; Vogt, Kjell gjermund; Holck, Askild lorentz

2010

A high-throughput microcultivation protocol for FTIR spectroscopic characterization and identification of fungi

Shapaval, Volha; Møretrø, Trond; Suso, Henri-Pierre; Åsli, Anette Wold; Schmitt, Jurgen; Lillehaug, Dag; Martens, Harald; Böcker, Ulrike; Kohler, Achim

2010

Factors affecting survival of Shigatoxin-producing Escherichia coli on abiotic surfaces

Møretrø, Trond; Heir, Even; Mo, Karin Rangøy; Habimana, Olivier; Abdelghani, Ahmed Moheyeldin; Langsrud, Solveig

2010

A synthetic furanone potentiates the effect of disinfectants on Salmonella in biofilm

Vestby, Lene Karine; Lönn-Stensrud, Jessica; Møretrø, Trond; Langsrud, Solveig; Scheie, Anne Aamdal; Benneche, Tore; Nesse, Live Lingaas

2010

Survival potential of wild type cellulose deficient Salmonella from the feed industry

Vestby, Lene Karine; Møretrø, Trond; Ballance, Simon; Langsrud, Solveig; Nesse, Live Lingaas

2009

Biofilm forming abilities of Salmonella are correlated with persistence in fish meal- and feed factories

Vestby, Lene Karine; Møretrø, Trond; Langsrud, Solveig; Heir, Even; Nesse, Live Lingaas

2009

Vil hindre bakteriesamtaler

Nesse, Live; Langsrud, Solveig; Møretrø, Trond; Scheie, Anne Aamdal; Benneche, Tore; Vestby, Lene K.

2009

Complex Phenotypic and Genotypic Responses of Listeria monocytogenes Strains Exposed to the Class IIa Bacteriocin Sakacin

Tessema, Girum Tadesse; Møretrø, Trond; Kohler, Achim; Axelsson, Lars; Naterstad, Kristine

2009

A novel packaging method with a dissolving CO2 headspace combined with organic acids prolongs the shelf life of fresh salmon

Schirmer, Bjørn Christian; Heiberg, Ragnhild; Eie, Thomas; Møretrø, Trond; Maugesten, Tove; Carlehøg, Mats; Langsrud, Solveig

2009

MALDI-TOF mass spectrometry for quantitative gene expression analysis of acid responses in Staphylococcus aureus

Rode, Tone Mari; Berget, Ingunn; Langsrud, Solveig; Møretrø, Trond; Holck, Askild lorentz

2009

Yeast diversity and dynamics in the production processes of Norwegian dry-cured meat products

Asefa, Dereje; Møretrø, Trond; Gjerde, Ragnhild O.; Langsrud, Solveig; Kure, Cathrine F.; Sidhu, Maan Singh; Nesbakken, Truls; Skaar, Ida

2009

Evaluation of efficacy of disinfectants against Salmonella from the feed industry

Møretrø, Trond; Vestby, Lene Karine; Nesse, Live Lingaas; Storheim, Sigrun; Kotlarz, Katrine; Langsrud, Solveig

2009

Vurdering av GellyFeed metoden som hygienisering ved bruk av akvakulturdyr i fôr til akvakulturdyr. Uttalelse fra Faggruppe for fôr til terrestriske og akvatiske dyr i Vitenskapskomiteen for mattrygghet

Møretrø, Trond; Hjeltnes, Brit Kristine; Nesse, Live Lingaas; Rimstad, Espen; Torrissen, Ole; Amlund, Heidi; Bernhoft, Aksel; Hemre, Gro Ingunn; Jenssen, Bjørn Munro; Svihus, Birger; Aursand, Marit

2008

Assessment of glucosamine and chondroitin in feed. Opinion of the Panel on Animal Feed of the Norwegian Scientific Committee for Food Safety

Aursand, Marit; Amlund, Heidi; Bernhoft, Aksel; Hemre, Gro Ingunn; Jenssen, Bjørn Munro; Møretrø, Trond; Nesse, Live Lingaas; Svihus, Birger; Torrissen, Ole

2008

FT-IR microspectroscopy: a promising method for the rapid identification of Listeria species

Janbu, Astrid Oust; Møretrø, Trond; Bertrand, Dominique; Kohler, Achim

2008

Vurdering av smitterisiko ved fôring av oppdrettsfisk med ubehandlet villfanget fisk. Uttalelse fra Faggruppe for dyrehelse og dyrevelferd (dyrevern) i Vitenskapskomiteen for mattrygghet

Håstein, Tore; Amlund, Heidi; Aursand, Marit; Bernhoft, Aksel; Hemre, Gro Ingunn; Jenssen, Bjørn Munro; Møretrø, Trond; Nesse, Live Lingaas; Svihus, Birger; Torrissen, Ole

2007

Nonleaching antimicrobial films prepared from surface modified microfibrillated cellulose

Andresen, Martin; Stenstad, Per Martin; Møretrø, Trond; Langsrud, Solveig; Syverud, Kristin; Johansson, Leena-Sisko; Stenius, Per Johan

2007

Different patterns of biofilm formation in Staphylococcus aureus under food-related stress conditions

Rode, Tone Mari; Langsrud, Solveig; Holck, Askild Lorentz; Møretrø, Trond

2007

Adapted tolerance to benzalkonium chloride in Escherichia coli K-12 studied by transcriptome and proteome analyses

Bore, Erlend; Hebraud, Michel; Chafsey, Ingrid; Chambon, Christophe; Skjæret, Camilla; Moen, Birgitte; Møretrø, Trond; Langsrud, Øyvind; Rudi, Knut; Langsrud, Solveig

2007

Evaluation of the Antibacterial Effect of a Triclosan-Containing Floor Used in the Food Industry

Møretrø, Trond; Sonerud, Tonje; Mangelrød, Ellen; Langsrud, Solveig

2006

Fourier transform infrared and Raman spectroscopy for characterization of Listeria monocytogenes strains

Oust, Astrid; Møretrø, Trond; Naterstad, Kristine; Sockalingum, Ganesh D.; Adt, Isabelle; Manfait, Michel; Kohler, Achim

2006

Sakacin P non-producing Lactobacillus sakei strains contain homologues of the sakacin P gene cluster

Møretrø, Trond; Naterstad, Kristine; Wang, Ellen; Aasen, Inga Marie; Chaillou, Stephane; Zagorec, Monique; Axelsson, Lars

2005

Wine is bactericidal to foodborne pathogens

Møretrø, Trond; Daeschel, M. A.

2004

FT-IR spectroscopy for identification of closely related lactobacilli

Oust, Astrid; Møretrø, Trond; Kirschner, Carolin; Narvhus, Judith; Kohler, Achim

2004

FTIR spectroscopy for identification of closely related lactobacilli

Oust, Astrid; Møretrø, Trond; Kirschner, Carolin; Narvhus, Judith; Kohler, Achim

2004

Evaluation of the robustness of FT-IR spectra of lactobacilli towards changes in the bacterial growth conditions

Oust, Astrid; Møretrø, Trond; Kirschner, Carolin; Narvhus, Judith; Kohler, Achim

2004

Interactions of the bacteriocins sakacin P and nisin with food constituents

Aasen, Inga Marie; Markussen, Sidsel; Møretrø, Trond; Katla, Tone; Axelsson, Lars; Naterstad, Kristine

2003

Susceptibility of Salmonella isolated from fish feed factories to disinfectants and air-drying at surfaces

Møretrø, Trond; Midtgaard, Eiri S.; Nesse, Live Lingaas; Langsrud, Solveig

2003

Biofilm formation and presence of the intercellular adhesion locus ica among staphylococci from food and food processing environments

Møretrø, Trond; Hermansen, Lene; Holck, Askild Lorentz; Sidhu, Maan S; Rudi, Knut; Langsrud, Solveig

2003

Development and application of new nucleic acid-based technologies for microbial community analyses in foods

Rudi, Knut; Nogva, Hege Karin; Moen, Birgitte; Nissen, Hilde; Bredholt, Sylvia; Møretrø, Trond; Naterstad, Kristine; Holck, Askild Lorentz

2002

Inhibition of Listeria monocytogenes in chicken cold cuts by addition of sakacin P and sakacin P-producing Lactobacillus sakei

Katla, Tone; Møretrø, Trond; Sveen, I; Aasen, Inga Marie; Axelsson, Lars; Rørvik, Liv Marit; Naterstad, Kristine

2002

Inhibition of Listeria monocytogenes in cold smoked salmon by addition of sakacin P and/or live Lactobacillus sakei cultures

Katla, Tone; Møretrø, Trond; Aasen, Inga Marie; Holck, Askild Lorentz; Axelsson, Lars; Naterstad, Kristine

2001