Browsing NTNU Open by Author "Thomassen, Gunn Merethe Bjørge"
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Antibiotic Resistance Properties among Pseudomonas spp. Associated with Salmon Processing Environments
Thomassen, Gunn Merethe Bjørge; Reiche, Thorben; Tennfjord, Christine Eikås; Mehli, Lisbeth (Peer reviewed; Journal article, 2022)Continuous monitoring of antimicrobial resistance in bacteria along the food chain is crucial for the assessment of human health risks. Uncritical use of antibiotics in farming over years can be one of the main reasons for ... -
Bacterial community development and diversity during the first year of production in a new salmon processing plant
Thomassen, Gunn Merethe Bjørge; Krych, Lukasz; Knøchel, Susanne; Mehli, Lisbeth (Peer reviewed; Journal article, 2022)The bacterial diversity and load on equipment in food processing facilities is constantly influenced by raw material, water, air, and staff. Despite regular cleaning and disinfection, some bacteria may persist and thereby ... -
Biofilm disinfection survival and growth dynamics of Listeria monocytogenes and Pseudomonas spp. from a Norwegian salmon processing facility
Hjørungnes, Martinus (Bachelor thesis, 2021)Norge er verdens største produsent av Atlantisk laks (Salmo salar) og eksporterer majoriteten til videre prosessering i EU-land. Spiseklare produkter av laks blir en stadig viktigere del av markedet, men innebærer risiko ... -
En evaluering av ekstraksjonsmetoder for vitamin C i ulike bladgrønnsaker og salturt
Hajdu-Andersson, Fanny; Thomassen, Rikke (Bachelor thesis, 2023)Hovedmålet med denne oppgaven var å bestemme den mest gunstige ekstraksjonsmetoden for vitamin C i ulike plantematerialer. Dette ble gjort ved å utføre og deretter vurdere ulike ekstraksjonsmetoder. Det ble tatt utgangspunkt ... -
Helgenomsekvensering av Listeria monocytogenes fra lakseindustri - Kvalitetssikring av DNA
Johansen, Kristoffer; Lee, Heidi Heejin (Bachelor thesis, 2020)Hensikten med oppgaven var å etablere kunnskap om Listeria monocytogenes-isolater hentet fra en laksefabrikk ved å isolere DNA og sende DNA-isolatet videre til helgenomsekvensering. Den vitenskapelige verdien av denne ... -
High Disinfectant Tolerance in Pseudomonas spp. Biofilm Aids the Survival of Listeria monocytogenes
Thomassen, Gunn Merethe Bjørge; Reiche, Thorben; Hjørungnes, Martinus; Mehli, Lisbeth (Peer reviewed; Journal article, 2023)Pseudomonas spp. are the most commonly found bacteria in food-processing environments due to properties such as a high growth rate at low temperatures, a high tolerance of antimicrobial agents, and biofilm formation. In ... -
Nutritional value of hydroponically cultivated Lactuca Sativa L. “Frillice” using urine-derived nutrient solutions
Kjellsen, Lone Hjeldnes (Bachelor thesis, 2023)Hovedmålet i denne oppgaven var å analysere hydroponisk dyrket salat av typen Lactuca sativa L. «Frillice» ved hjelp av åtte ulike næringsløsninger, og å analysere salatenes næringsverdi. En næringsløsning basert på ... -
ON-rep-seq as a rapid and cost-effective alternative to whole-genome sequencing for species-level identification and strain-level discrimination of Listeria monocytogenes contamination in a salmon processing plant
Thomassen, Gunn Merethe Bjørge; Krych, Lukasz; Knøchel, Susanne; Mehli, Lisbeth (Peer reviewed; Journal article, 2021)Identification, source tracking, and surveillance of food pathogens are crucial factors for the food-producing industry. Over the last decade, the techniques used for this have moved from conventional enrichment methods, ... -
Quality of fresh saithe (Pollachius virens) in modified atmosphere packages as affected by the gas composition
Lerfall, Jørgen; Thomassen, Gunn Merethe Bjørge; Jakobsen, Anita Nordeng (Journal article; Peer reviewed, 2018)The experimental design was set up to study the effect of different modified atmospheres (CO2 (67 or 33%) balanced with either O2 or N2) on autolytic- and microbiological deterioration of chilled saithe (Pollachius virens). ... -
Resilient bacterial communities in a salmon processing environment: The impact on food safety
Thomassen, Gunn Merethe Bjørge (Doctoral theses at NTNU;2022:231, Doctoral thesis, 2022) -
The prevalence, genetic diversity and antibiotic resistance of Staphylococcus aureus in milk whey and cheese from artisan farm dairies
Thomassen, Gunn Merethe Bjørge; Jakobsen, Anita Nordeng; Mehli, Lisbeth; Hoel, Sunniva; Karlsen, Hanne (Journal article; Peer reviewed, 2016)In this study, coagulase positive staphylococci were detected in 45% of the 69 bovine milk, whey and cheese samples taken from five farm dairies, and all raw milk samples were contaminated. Genetic diversity, staphylococcal ...