Blar i Brage NMBU på forfatter "Ekeberg, Dag"

Analyse av MAG i melk ved bruk av offline SPE GC-MS

Østbø, Gard (Master thesis, 2021)

Inntak av mettet fett har lenge vært assosiert med negative helseeffekter som hjerte og karsykdommer. Mange tidlige utviklingsstadier av hjerte og karsykdommer viser lavgradig betennelse. I forskningsprosjektet LipidInflammaGenes ...

Analyse av tensider i vaskemidler og tøymykner, med HPLC-UV

Kanagasundram, Sharanya (Master thesis, 2022)

Tensider er et samlenavn for overflateaktive stoffer som i økende grad blir anvendt ved mange industriområder som mat-, farmasøytisk og den kjemiske industrien. Blant disse har tensider en stor rolle innen husholdningsprodukter ...

Analyse av tryptaminer i fullblod med UHPLC-MS/MS

Eidhammer, Monica Kvitrud (Master thesis, 2021)

Tryptaminer er en undergruppe av nye psykoaktive substanser (NPS) med økende forekomst i senere år. I tillegg kan en fornyet interesse for medisinsk bruk av tryptaminer føre til økt bruk i samfunnet. Dette gjør det aktuelt ...

Betalainer i beter (Beta vulgaris) : utvikling av analysemetodikk og kartlegging av betalainer i betesorter

Brandsnes, Anette Lie (Master thesis, 2016-08-09)

Det har blitt utviklet en metode for ekstraksjon og kvalitativ og kvantitativ analyse av betalainer med HPLC-MS og spektrofotometer. Betalainene ble ekstrahert fra både rødbete, gulbete og polkabete (Beta vulgaris). H ...

Characterisation of nonpolar compounds from Electronic cigarette aerosols by GC-MS

Teigland, Even Kristian (Master thesis, 2018)

Electronic cigarettes (e-cigarettes) are nicotine delivering systems without combustion. By inhaling an aerosolised liquid, e-liquid, the user can stimulate nicotine cravings. The e-liquid contains humectants, propylene ...

Characterization of fatty acids in marine macroalgae by GC-MS

Melby, Mikkel Birkeland (Master thesis, 2019)

The main objective of the study was to identify and quantify the fatty acids present in three distinct lipid fractions, namely neutral lipids, free fatty acids and polar lipids, in the macroalgae; Alaria esculenta, Saccharina ...

Characterization of organic art materials by GC-MS

Landsverk, Marius Gotch (Master thesis, 2019)

Background: In conservation of old paintings, knowing the composition of the paint binder is of great importance. Some conservation techniques can be damaging to the paintings when it is applied to the wrong kind of paint. ...

Characterization of Pseudo-Lignin from Steam Exploded Birch

Aarum, Ida Synnøve; Devle, Hanne Marie; Ekeberg, Dag; Horn, Svein Jarle; Stenstrøm, Yngve H. (Journal article; Peer reviewed, 2018)

There is a growing interest in a more wholesome utilization of biomass as the need for greener chemistry and non-mineral oil-based products increases. Lignin is the largest renewable resource for aromatic chemicals, which ...

Determining monoacylglycerol positional isomers as trimethylsilyl (TMS) derivatives by GC-MS

Flytkjær, Anders Moen (Master thesis, 2021)

Monoacylglycerols (MAG) are constituents of milk lipids that are always present at low levels but also one end products of triglyceride (TAG) digestion. The most abundant type of lipids found in milk. The position at which ...

Development of a liquid chromatography mass spectrometry method for the determination of tryptamines in whole blood

McQuade, Tao Angell-Petersen (Master thesis, 2021)

The recent development and distribution of new psychoactive tryptamines has caused increased use in Norway. This has exposed a need to develop sensitive and robust determination methods for forensic cases involving ...

Diagnostic fragmentation filtering for the global LC-HRMS/MS analysis of ergot alkaloids and indole–diterpenoids in Norwegian and Canadian Claviceps species

Pauchon, Kari Anne (Master thesis, 2019)

The understanding of the cereal disease caused by ergot (C. purpurea) is important with reference to wildlife and agriculture as ergot produces toxins. The sample set used in this study consisted of 66 Claviceps sclerotia ...

Evaluation and optimisation of direct transesterification methods for the assessment of lipid accumulation in oleaginous filamentous fungi

Langseter, Anne Marie; Dzurendova, Simona; Shapaval, Volha; Kohler, Achim; Ekeberg, Dag; Zimmermann, Boris (Journal article; Peer reviewed, 2021)

Ex Vivo Digestion of Milk from Red Chittagong Cattle Focusing Proteolysis and Lipolysis

Islam, Mohammad Ashiqul; Ekeberg, Dag; Rukke, Elling-Olav; Vegarud, Gerd Elisabeth (Journal article; Peer reviewed, 2014)

Fatty Acid Profiles of Stipe and Blade from the Norwegian Brown Macroalgae Laminaria hyperborea with Special Reference to Acyl Glycerides, Polar Lipids, and Free Fatty Acids

Foseid, Lena; Devle, Hanne Marie; Stenstrøm, Yngve; Næss-Andresen, Carl Fredrik; Ekeberg, Dag (Journal article; Peer reviewed, 2017)

A thorough analysis of the fatty acid profiles of stipe and blade from the kelp species Laminaria hyperborea is presented. Lipid extracts were fractionated into neutral lipids, free fatty acids, and polar lipids, prior to ...

Fatty Acid Profiles of Stipe and Blade from the Norwegian Brown Macroalgae Laminaria hyperborea with Special Reference to Acyl Glycerides, Polar Lipids, and Free Fatty Acids

Foseid, Lena; Devle, Hanne Marie; Stenstrøm, Yngve; Næss-Andresen, Carl Fredrik; Ekeberg, Dag (Journal article; Peer reviewed, 2017)

A thorough analysis of the fatty acid profiles of stipe and blade from the kelp species Laminaria hyperborea is presented. Lipid extracts were fractionated into neutral lipids, free fatty acids, and polar lipids, prior to ...