Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2022
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Forfattere
Venche Talgø Thomas Jung Ivan Milenković Tamara Corcobado Martin Pettersson May Bente BrurbergSammendrag
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Forfattere
Venche Talgø Thomas Jung Ivan Milenković Tamara Corcobado Martin Pettersson May Bente BrurbergSammendrag
Over hele verden har sjøgrasenger minsket dramatisk og blant de berørte artene er ålegras (Zostera spp.). Ålegrasenger er av stor betydning som oppvekststed for mange marine arter, blant dem torskeyngel. Ålegrasenger skades av mudring og andre fysiske inngrep i strandsoner, men ålegras er også utsatt for sjukdomsorganismer og andre biotiske skadegjørere. Vi rapporterer her funn av flere potensielt sjukdomsfremkallende arter av Phytophthora og Halophytophthora på ålegras langs norskekysten. Hvor mye disse artene bidrar til tilbakegangen av ålegras er usikkert, så videre forskning er nødvendig.
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Cattle production is constantly threatened by diseases like East Coast fever, also known as theileriosis, caused by the protozoan parasite Theileria parva which is transmitted by ticks such as the brown ear tick, Rhipicephalus appendiculatus. To reduce the extensive use of chemical acaricides, fungal-based microbial control agents such as Metarhizium anisopliae have been tested and show promising results against R. appendiculatus both in field and in semi-field experiments in Africa. However, no known endeavors to link the spatial distribution of R. appendiculatus to climatic variables important for the successful application of M. anisopliae in selected East African countries exists. This work therefore aims to improve the successful application of M. anisopliae against R. appendiculatus by designing a temperature-dependent model for the efficacy of M. anisopliae against three developmental stages (larvae, nymphs, adults) of R. appendiculatus. Afterward a spatial prediction of potential areas where this entomopathogenic fungus might cause a significant epizootic in R. appendiculatus population in three selected countries (Kenya, Tanzania, Uganda) in Eastern Africa were generated. This can help to determine whether the temperature and rainfall at a local or regional scale might give good conditions for application of M. anisopliae and successful microbial control of R. appendiculatus.
Sammendrag
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Forfattere
Giorgia Carnovale Shaun Allan Leivers Filipa Rosa Hans Ragnar Norli Edvard Hortemo Trude Wicklund Svein Jarle Horn Kari SkjånesSammendrag
Microalgal biomass is widely studied for its possible application in food and human nutrition due to its multiple potential health benefits, and to address raising sustainability concerns. An interesting field whereby to further explore the application of microalgae is that of beer brewing, due to the capacity of some species to accumulate large amounts of starch under specific growth conditions. The marine species Tetraselmis chui is a well-known starch producer, and was selected in this study for the production of biomass to be explored as an active ingredient in beer brewing. Cultivation was performed under nitrogen deprivation in 250 L tubular photobioreactors, producing a biomass containing 50% starch. The properties of high-starch microalgal biomass in a traditional mashing process were then assessed to identify critical steps and challenges, test the efficiency of fermentable sugar release, and develop a protocol for small-scale brewing trials. Finally, T. chui was successfully integrated at a small scale into the brewing process as an active ingredient, producing microalgae-enriched beer containing up to 20% algal biomass. The addition of microalgae had a noticeable effect on the beer properties, resulting in a product with distinct sensory properties. Regulation of pH proved to be a key parameter in the process.
Forfattere
Randi Bolli Ingunn H. Gudmundsdottir Monsås Agnethe Christiansen Kari Stuveseth Maren Kolltveit BakkebøSammendrag
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