Related content

  • CV
  • Scientific publications
  • Other publications

Biography Even Heir

I work as a research scientist in the research area Food safety and quality in Division Food Science. I work in particular with food safety to understand growth and survival of foodborne pathogens (e.g. Escherichia coli, Listeria monocytogenes, Salmonella) in food and food production environments. We apply and evaluate new technologies ,improved cleaning and disinfection strategies and combined strategies (“Hurdle technology” concept) to obtain safe, high quality food from both the agricultural and seafood industry. Knowledge transfer to the food industry is an important part. Of special interest is biofilm formation of foodborne bacteria and bacterial adaptation to food stresses affecting growth and survival in food and food production environments.

Even has 56 scientific publications in Cristin:

Møretrø, Trond; Schirmer, Bjørn Christian; Heir, Even; Fagerlund, Annette; Hjemli, Pernille; Hjemli, Pernille; Langsrud, Solveig; 2017: Tolerance to quaternary ammonium compound disinfectants may enhance growth of Listeria monocytogenes in the food industry

Mo, Solveig Sølverød; Sunde, Marianne; Ilag, Hanna Karin; Langsrud, Solveig; Heir, Even; 2017: Transfer Potential of Plasmids Conferring Extended-Spectrum-Cephalosporin Resistance in Escherichia coli from Poultry

Fagerlund, Annette; Møretrø, Trond; Heir, Even; Briandet, Romain; Langsrud, Solveig; 2017: Cleaning and disinfection of biofilms composed of Listeria monocytogenes and background microbiota from meat processing surfaces

Møretrø, Trond; Schirmer, Bjørn Christian; Heir, Even; Langsrud, Solveig; 2017: In situ evaluation of citric acid powder to control Listeria monocytogenes on floors in meat processing plants

Holck, Askild Lorentz; Axelsson, Lars; McLeod, Anette; Rode, Tone Mari; Heir, Even; 2017: Health and Safety Considerations of Fermented Sausages

Langsrud, Solveig; Moen, Birgitte; Møretrø, Trond; Løype, Marie; Løype, Marie; Heir, Even; 2016: Microbial dynamics in mixed culture biofilms of bacteria surviving sanitation of conveyor belts in salmon-processing plants

Fagerlund, Annette; Langsrud, Solveig; Schirmer, Bjørn Christian; Møretrø, Trond; Heir, Even; 2016: Genome Analysis of Listeria monocytogenes Sequence Type 8 Strains Persisting in Salmon and Poultry Processing Environments and Comparison with Related Strains

Fagerlund, Annette; Langsrud, Solveig; Heir, Even; Mikkelsen, Maria Ingeborg; Mikkelsen, Maria Ingeborg; Møretrø, Trond; 2016: Biofilm matrix composition affects the susceptibility of food associated staphylococci to cleaning and disinfection agents

Møretrø, Trond; Moen, Birgitte; Heir, Even; Hansen, Anlaug Ådland; Langsrud, Solveig; 2016: Contamination of salmon fillets and processing plants with spoilage bacteria

McLeod, Anette; Måge, Ingrid; Heir, Even; Axelsson, Lars; Holck, Askild Lorentz; 2016: Effect of relevant environmental stresses on survival of enterohemorrhagic Esherichia coli in dry-fermented sausage

Møretrø, Trond; Sharifzadeh, Shahab; Sharifzadeh, Shahab; Langsrud, Solveig; Heir, Even; Rickard, A.H.; 2015: Coaggregation between Rhodococcus and Acinetobacter strains isolated from the food industry

Røssvoll, Elin Halbach; Langsrud, Solveig; Bloomfield, S; Moen, Birgitte; Heir, Even; Møretrø, Trond; 2015: The effects of different hygiene procedures in reducing bacterial contamination in a model domestic kitchen

Giaouris, Efstathios; Heir, Even; Desvaux, Mickaël; Hébraud, Michel; Møretrø, Trond; Langsrud, Solveig; Doulgeraki, Agapi; Nychas, George-John; Ka?ániová, Miroslava; Czaczyk, Katarzyna; Ölmez, Hülya; Simões, Manuel; 2015: Intra- and inter-species interactions within biofilms of important foodborne bacterial pathogens

Holck, Askild Lorentz; Heir, Even; Johannessen, T.C.; Axelsson, Lars; 2014: North European products

Quinto, E.J.; Arinder, P.; Axelsson, Lars; Heir, Even; Holck, Askild Lorentz; Lindqvist, R.; Lindblad, M.; Andreou, P.; Lauzon, H.L.; Marteinsson, V. P; Pin, C.; 2014: Predicting the concentration of verotoxin-producing Escherichia coli bacteria during processing and storage of fermented raw-meat sausages

Giaouris, E. D.; Heir, Even; Hébraud, M.; Chorianopoulos, N.; Langsrud, Solveig; Møretrø, Trond; Habimana, Olivier; Desvaux, M.; Renier, S.; Nychas, G.-J.; 2014: Attachment and biofilm formation by foodborne bacteria in meat processing environments: Causes, implications, role of bacterial interactions and control by alternative novel methods

Habimana, Olivier; Nesse, Live Lingaas; Møretrø, Trond; Berg, Kristin; Heir, Even; Vestby, Lene Karine; Langsrud, Solveig; 2014: The persistence of Salmonella following desiccation under feed processing environmental conditions: a subject of relevance

Langsrud, Solveig; Heir, Even; Rode, Tone Mari; 2014: Survival of Shiga toxin-producing Escherichia coli and Stx bacteriophages in moisture enhanced beef

Røssvoll, Elin Halbach; Sørheim, Oddvin; Heir, Even; Møretrø, Trond; Olsen, Nina Veflen; Langsrud, Solveig; 2014: Consumer preferences, internal color and reduction of shigatoxigenic Escherichia coli in cooked hamburgers

Schirmer, Bjørn Christian; Heir, Even; Lindstedt, Bjørn Arne; Møretrø, Trond; Langsrud, Solveig; 2014: Use of used vs. fresh cheese brines and the effect of pH and salt concentration on the survival of Listeria monocytogenes

Giaouris, E. D.; Heir, Even; Hébraud, M.; Chorianopoulos, Nikos; Langsrud, Solveig; Møretrø, Trond; Habimana, Olivier; Desvaux, Mickaël; Renier, S.; Nychas, George-John; 2014: Attachment and biofilm formation by foodborne bacteria in meat processing environments: Causes, implications, role of bacterial interactions and control by alternative novel methods

Alvarez-Ordonez, A.; Alvseike, Ole; Omer, M.K.; Heir, Even; Axelsson, Lars; Holck, Askild Lorentz; Prieto, M.; 2013: Heterogeneity in resistance to food-related stresses and biofilm formation ability among verocytotoxigenic Escherichia coli strains

Heir, Even; Holck, Askild Lorentz; Omer, Mohammed K.; Alvseike, Ole; Måge, Ingrid; Høy, Martin; Rode, Tone Mari; Sidhu, Maan Singh; Axelsson, Lars; 2013: Effects of post-processing treatments on sensory quality and Shiga toxigenic Escherichia coli reductions in dry-fermented sausages

Møretrø, Trond; Langsrud, Solveig; Heir, Even; 2013: Bacteria on meat abattoir meat production process surfaces after sanitation: Characterisation of survival properties of Listeria monocytogenes and the commensal bacterial flora

Røssvoll, Elin Halbach; Sørheim, Oddvin; Heir, Even; Møretrø, Trond; Olsen, Nina Veflen; Langsrud, Solveig; 2013: Cooking hamburgers at home - consumer preferences, internal color and survival of shigatoxigenic Eschericia coli

Schirmer, Bjørn Christian; Heir, Even; Møretrø, Trond; Skaar, Ida; Langsrud, Solveig; 2013: Microbial background flora in small-scale cheese production facilities does not inhibit growth and surface attachment of Listeria monocytogenes

Rode, Tone Mari; Holck, Askild Lorentz; Axelsson, Lars; Høy, Martin; Heir, Even; 2012: Shiga toxigenic Escherichia coli show strain dependent reductions under dry-fermented sausage production and post-processing conditions

Tessema, Girum Tadesse; Møretrø, Trond; Snipen, Lars; Heir, Even; Holck, Askild Lorentz; Naterstad, Kristine; Axelsson, Lars; 2012: Microarray-based transcriptome of Listeria monocytogenes adapted to sublethal concentrations of acetic acid, lactic acid, and hydrochloric acid

Schirmer, Bjørn Christian; Langsrud, Solveig; Møretrø, Trond; Hagtvedt, Therese; Heir, Even; 2012: Performance of two commercial rapid methods for sampling and detection of Listeria in small-scale cheese producing and salmon processing environments

Møretrø, Trond; Heir, Even; Nesse, Live Lingaas; Vestby, Lene Karine; Langsrud, Solveig; 2012: Control of Salmonella in food related environments by chemical disinfection

Holck, Askild Lorentz; Axelsson, Lars; Rode, Tone Mari; Høy, Martin; Måge, Ingrid; Alvseike, Ole; L'Abée-Lund, Trine; Omer, MK; Granum, Per Einar; Heir, Even; 2011: Reduction of verotoxigenic Escherichia coli in production of fermented sausages

Møretrø, Trond; Høiby-Pettersen, Gunn Sigrid; Habimana, Olivier; Heir, Even; Langsrud, Solveig; 2011: Assessment of the antibacterial activity of a triclosan-containing cutting board

Rode, Tone Mari; Axelsson, Lars; Granum, Per Einar; Heir, Even; Holck, Askild Lorentz; L'Abée-Lund, Trine; 2011: High Stability of Stx2 Phage in Food and under Food-Processing Conditions

Habimana, Olivier; Heir, Even; Langsrud, Solveig; Åsli, Anette Wold; Møretrø, Trond; 2010: Enhanced Surface Colonization by Escherichia coli O157:H7 in Biofilms Formed by an Acinetobacter calcoaceticus Isolate from Meat-Processing Environments

Habimana, Olivier; Møretrø, Trond; Langsrud, Solveig; Vestby, Lene Karine; Nesse, Live Lingaas; Heir, Even; 2010: Micro ecosystems from feed industry surfaces: a survival and biofilm study of Salmonella versus host resident flora strains

Heir, Even; Holck, Askild Lorentz; Omer, Mohammed K.; Alvseike, Ole; Høy, Martin; Måge, Ingrid; Axelsson, Lars; 2010: Reduction of verotoxigenic Escherichia coli by process and recipe optimisation in dry-fermented sausages

Holck, Askild Lorentz; Pedersen, Britt O.; Heir, Even; 2010: Detection of five novel GMO maize events by qualitative, multiplex PCR and fluorescence capillary gel electrophoresis

Møretrø, Trond; Heir, Even; Mo, Karin Rangøy; Habimana, Olivier; Abdelghani, Ahmed Moheyeldin; Langsrud, Solveig; 2010: Factors affecting survival of Shigatoxin-producing Escherichia coli on abiotic surfaces

Omer, Mohamed; Alvseike, Ole; Holck, Askild Lorentz; Axelsson, Lars; Prieto, M.; Skjerve, E; Heir, Even; 2010: Application of high pressure processing to reduce verotoxigenic E-coli in two types of dry-fermented sausage

Holck, Askild Lorentz; Drømtorp, Signe; Heir, Even; 2009: Quantitative, multiplex ligation-dependent probe amplification for the determination of eight genetically modified maize events

Schirmer, Bjørn Christian; Heir, Even; Langsrud, Solveig; 2009: Characterization of the bacterial spoilage flora in marinated pork products

Vestby, Lene Karine; Møretrø, Trond; Langsrud, Solveig; Heir, Even; Nesse, Live Lingaas; 2009: Biofilm forming abilities of Salmonella are correlated with persistence in fish meal- and feed factories

Heide, Bjarte Rambjør; Drømtorp, Signe; Rudi, Knut; Heir, Even; Holck, Askild Lorentz; 2008: Determination of eight genetically modified maize events by quantitative, multiplex PCR and fluorescence capillary gel electrophoresis

Heide, Bjarte Rambjør; Heir, Even; Holck, Askild Lorentz; 2008: Detection of eight GMO maize events by qualitative, multiplex PCR and fluorescence capillary gel electrophoresis

Scheie, Anne A.; Yazdankhah, Siamak Pour; Høiby, Ernst Arne; Lunestad, Bjørn-Tore; Heir, Even; Fotland, TO; Naterstad, Kristine; Kruse, Hilde; 2007: Kan bruk av triklosanholdige produkter bidra til utvikling av resistente bakterier?

Berget, Ingunn; Heir, Even; Heir, Even; Petcovic, Jelena; Rudi, Knut; 2007: Discriminatory power, typability, and accuracy of single nucleotide extension microarrays

Yazdankhah, Siamak Pour; Scheie, Anne A.; Høiby, Ernst Arne; Lunestad, Bjørn-Tore; Fotland, TO; Heir, Even; Fotland, Tor Øystein; Naterstad, Kristine; Kruse, Hilde; 2006: Triclosan and antimicrobial resistance in bacteria: An overview

Bjorland, Jostein; Steinum, Terje; Sunde, Marianne; Waage, Steinar; Sviland, Ståle; Oppegaard, Hanne; Heir, Even; Heir, Even; 2006: Deletion of pT181-like sequence in an smr-encoding mosaic plasmid harboured by a persistent bovine Staphylococcus warneri strain

Bjorland, Jostein; Steinum, Terje; Kvitle, Bjørg; Waage, Steinar; Sunde, Marianne; Heir, Even; 2005: Widespread Distribution of Disinfectant Resistance Genes among Staphylococci of Bovine and Caprine Origin in Norway

Langsrud, Solveig; Sidhu, Maan Singh; Heir, Even; Holck, Askild Lorentz; 2003: Bacterial disinfectant resistance—a challenge for the food industry

Lindstedt, Bjørn-Arne; Heir, Even; Gjernes, Elisabeth; Kapperud, Georg; 2003: DNA fingerprinting of Salmonella enterica subsp. enterica serovar typhimurium with emphasis on phage type DT104 based on variable number of tandem repeat loci

Nesse, Live Lingaas; Nordby, Kerstin; Heir, Even; Bergsjø, Bjarne A; Vardund, Traute; Nygaard, Halvor; Holstad, Gudmund; 2003: Molecular Analyses of Salmonellaenterica Isolates from Fish Feed Factories and Fish Feed Ingredients

Sidhu, Maan Singh; Heir, Even; Leegaard, Truls Michael; Wiger, Karianne; Holck, Askild Lorentz; 2002: Frequency of disinfectant resistance genes and genetic linkage with beta-lactamase transposon Tn552 among clinical staphylococci

Heir, Even; Langsrud, Solveig; Sidhu, Maan Singh; Steinbakk, Martin; 2001: Kan desinfeksjonsmidler bidra til bakteriell antibiotikaresistens?

Johnsen, Gro; Wasteson, Yngvild; Heir, Even; Berget, Odd Ivar; Herikstad, Hallgeir; 2001: Escherichia coli O157:H7 in Faeces from Cattle, Sheep and Pigs in the Southwest Part of Norway during 1998 and 1999

Sidhu, Maan Singh; Heir, Even; Sørum, Henning; Holck, Askild Lorentz; 2001: Genetic linkage between resistance to quaternary ammonium compounds and beta-lactam antibiotics in food-related Staphylococcus spp

Even has 12 other publications in Cristin:

Heir, Even; Møretrø, Trond; Langsrud, Solveig; 2016: Veileder - Overvåking og prøvetaking for økt kontroll med Listeria ved produksjon av varmebehandlede, spiseklare kjøttprodukter

Langsrud, Solveig; Møretrø, Trond; Heir, Even; 2016: Veileder - Problemløsing og forebygging av Listeria i avdelinger som håndterer uemballerte, varmebehandlete kjøttprodukter

Hagtvedt, Therese; Heir, Even; 2016: Mattrygghet

Fagerlund, Annette; Heir, Even; 2016: Ny teknologi gir nye muligheter for å avsløre Listeria-bakterier i matindustrien

Heir, Even; Holck, Askild Lorentz; Langsrud, Solveig; 2015: Nye verktøy for kontroll med listeria i laks og lakseprodukter: Vurdering og uttesting av metoder for å redusere listeria-nivået i råvarer og produkter. Forprosjekt

Langsrud, Solveig; Heir, Even; 2015: Renhold for bekjempelse av Listeria

Heir, Even; Møretrø, Trond; 2015: Listeria i spekemat – en mattrygghetsutfordring?

Heir, Even; Langsrud, Solveig; 2014: Smittekilder for Listeria i lakse- og ørretnæringen

Heir, Even; Langsrud, Solveig; 2014: Tiltak for økt kontroll med listeria i laksenæringen. Sluttrapport + vedlegg

Heir, Even; 2014: Hjelper med problembakterier

Heir, Even; Langsrud, Solveig; Moen, Birgitte; Hansen, Anlaug Ådland; 2013: Produksjonshygiene og holdbarhet av pre-rigor laksefilet (forprosjekt). Nivå av bakterier og kartlegging av bakterieflora/mikrobiota på pre-rigor produsert islagret laksefilet

Heir, Even; Langsrud, Solveig; 2013: Smitteveier og smittekilder for Listeria i produksjonskjeden for sløyd og røkt laks