Browsing Doctoral theses (KBM) by Title
Now showing items 28-47 of 122
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Dietary influence on intestinal microbiota and immune responses in mice : roles of high-fat diet and reactive oxygen species (ROS)
(PhD Thesis;2020:60, Doctoral thesis, 2020)The gastrointestinal tract harbors trillions of bacteria. Host and microbiota co-evolved in a mutualism relationship with a certain degree of dependency, where the host provides a nutrient-rich environment and benefits ... -
Discovery and characterization of bacterial enzymes for processing of lignocellulosic biomass
(PhD Thesis;2019:62, Doctoral thesis, 2019)Utilization of non-edible biomass as a source of renewable carbon can assist the transition to a sustainable bioeconomy. Such biomass includes non-edible plant materials commonly referred to as lignocellulose. Lignocellulose ... -
Discovery and characterization of cellulose-active lytic polysaccharide monooxygenases
(PhD Thesis;2014:62, Doctoral thesis, 2014)The efficient depolymerization of lignocellulosic biomass to fermentable sugars by enzymatic hydrolysis is a key step in the transition towards a more environmentally friendly and sustainable bio-economy. However, the ... -
Discovery and characterization of enzymes acting on chitin
(PhD Thesis;2017:71, Doctoral thesis, 2017)In the shift from a fossil-based to a bio-based economy, exploration of renewable recourses is needed. Chitin is considered the second most abundant polysaccharide on Earth, after cellulose, and its water-soluble derivatives ... -
Dissecting molecular properties of honey bee vitellogenin : a protein acting at the intersection between social behavior and aging
(PhD Thesis;2011:59, Doctoral thesis, 2011)Vitellogenin is a central honey bee (Apis mellifera) life-history regulator. This thesis represents an initiative to study this protein, which affects aging and task-division of the bees, at the molecular level. I have ... -
Diversity and functional aspects of cheese ripening bacteria
(PhD Thesis;2017:16, Doctoral thesis, 2016)Cheese traits can be seen in the context of metabolic activity of lactic acid bacteria (LAB) and their impact is important to obtain cheeses with specific characteristics. Accurate identification and characterisation of ... -
DNA methylation in a nutritional and social context : a study of cytosine modifications in honey bee (Apis mellifera) workers
(PhD Thesis;2023:10, Doctoral thesis, 2023)Intergenic DNA methylation is widespread in both the animal and plant kingdoms. Its presence in exons is believed to be dynamic and suggests its involvement in the regulation of alternative splice variants. In addition, ... -
Establishment of gut microbiota in infants from a large Norwegian cohort
(PhD Thesis;2015:76, Doctoral thesis, 2020-11-10)Human gut microbiota, our so-called forgotten organ, is crucial for proper functioning of our body and for health maintenance. Although the topic of the gut microbiota establishment is very important, scientists still have ... -
Evaluating nuclear magnetic resonance (NMR) as a robust absolute reference method for water holding capacity (WHC) of pork meat
(PhD Thesis;2016:64, Doctoral thesis, 2017-01-05)Water holding capacity (WHC) is among the most important quality traits of meat. However, the mechanism behind WHC continues to be poorly understood and online measurement has yet to be achieved in the meat industry. The ... -
Evolution of gene expression following the whole genome duplication in salmonid fish
(PhD Thesis;2019:53, Doctoral thesis, 2019)Whole genome duplication (WGD) is a rare mutational event that provides additional duplicates of all genes in the entire genome, resulting in functional redundancy. This redundancy leads to relaxation of selective constraints ... -
An examination of stress resistance and lifespan extension in the honey bee, Apis mellifera
(PhD Thesis;2013:48, Doctoral thesis, 2013)Many societies and health systems will soon face the unprecedented challenge of burgeoning aged populations. This demographic change will place pressure on social and medical systems, and give rise to questions concerning ... -
Expanding the analytical toolbox for characterization of proteolytic reactions : advances in FTIR spectroscopy and classical methods
(PhD Thesis;2019:85, Doctoral thesis, 2019)Enzymatic protein hydrolysis is a well-established industrial process recognized for its potential to improve sustainability in food production by valorization of protein-rich byproducts from the food industry. Monitoring ... -
Exploration of multi-response multivariate methods
(PhD Thesis;2019:76, Doctoral thesis, 2019)A linear regression model defines a linear relationship between two or more random variables. The random variables that depend on other random variables are often called response variables and the independent random variables ... -
Exploring acetylated galactoglucomannan as a source of prebiotics
(Doctoral thesis, 2018)The wood and paper industry in Norway and worldwide suffers from low demand and low prices. Developing consolidated biorefinery solutions to generate higher value products from woody biomass could be a viable alternative ... -
Exploring variability of perceptions and heterogeneity of opinions
(Dr. Philos. thesis;2023:2, Doctoral thesis, 2023)The manuscripts in this thesis introduce new sensometric methods. Some methods investigate the variability of perceptions in sensory studies involving trained or consumer panels. Other methods explore the heterogeneity of ... -
Factors influencing the processing quality of potatoes : development of analytical tools for process monitoring and optimization
(PhD Thesis;2015:30, Doctoral thesis, 2017-11-30)Potatoes are notoriously heterogeneous, and manufacturers of processed potato products are therefore faced with a number of challenges during processing. The motivation behind this thesis is to reduce waste and cut production ... -
The farmed Atlantic salmon (Salmo salar) skin-mucus microbiome : bacterial diversity, mucus degrading potential and putative virulence factors
(PhD Thesis;2018:34, Doctoral thesis, 2018)Norway is the main producer and exporter of Atlantic salmon worldwide, representing one of the pillars of the Norwegian economy. Today, about 1.2 million tons of salmonids are produced in Norway and a five-fold increase ... -
Full circle : genetics, biosynthesis, mode of action and resistance mechanisms of the bacteriocin garvicin ML
(PhD Thesis;2013:68, Doctoral thesis, 2013)Bacteriocins are ribosomally synthesized antimicrobial peptides, produced by many lactic acid bacteria, which show high promise as antimicrobial agents for use in both food industry and for medical applications. In this ... -
Functional insights into novel factors affecting cell division in Gram-positive bacteria
(PhD Thesis;2021:91, Doctoral thesis, 2021)The opportunistic pathogen Staphylococcus aureus is a major contributor to a range of different infections in human and animals that have become difficult to treat because of the rise of antibiotic resistant strains. New ... -
Fungal aerosols : characterization and immunodetection of fungal fragments
(PhD Thesis;2015:26, Doctoral thesis, 2017-11-30)Indoor environments with high moisture problems often reveal colonization of indoor materials by fungi with release of airborne fungal particles. Exposure to airborne fungal particles has been associated with various ...