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.
2010
Forfattere
Espen Govasmark Anicke Brandt-Kjelsen Joanna Szpunar Katarzyna Bierla Gerd Vegarud Brit SalbuSammendrag
Abstract: Selenium (Se) is an essential trace element to animals and humans as Se is incorporated in a series of organic molecules, such as 30 mammalian selenoproteins or seleno-enzymes, which are vital for the basic functions of life. To increase the Se intake in Se-deficient areas, food and feed can be enriched using Se fertilizers or supplements. The aim of this study is to investigate the distribution, speciation, bioaccessibility, and bioavailability of Se in Se-enriched wheat (SW) grain and in Se-enriched chicken meat products using commercial enzymes and human gastric juices (HGJs). Results from the present work show that Se in wheat is bioaccessible and bioavailable, and that SW flour or bran can serve as a valuable dietary source of Se to humans. However, the bioaccessibility studies using commercial enzymes and HGJs for wheat flour, bran, and chicken meat digestion suggests that the use of commercial enzymes overestimate Se bioavailability. Furthermore, the use of NaCl or Tris-HCl to extract Se proteins from enriched products was not suited for bioaccessibility studies.The SW flour or bran can, however, serve as a valuable dietary source of Se to humans.
Sammendrag
Roseroot, Rhodiola rosea, is a perennial herbaceous plant of the family Crassulaceae. The rhizomes of 95 roseroot clones in the Norwegian germplasm collection were analysed and quantified for their content of the bioactive compounds rosavin, salidroside, rosin, cinnamyl alcohol and tyrosol using HPLC analysis. All five bioactive compounds were detected in all 95 roseroot clones but in highly variable quantities. The ranges observed for the different compounds were for rosavin 2.90-85.95mgg-1, salidroside 0.03-12.85mgg-1, rosin 0.08-4.75mgg-1, tyrosol 0.04-2.15mgg-1 and cinnamyl alcohol 0.02-1.18mgg-1. The frequency distribution of the chemical content of each clone did not reflect a certain geographic region of origin or the gender of the plant. Significant correlations were found for the contents of several of these bioactive compounds in individual roseroot clones. A low, but not significant correlation was found between AFLP markers previously used to study the genetic diversity of the roseroot clones and their production of the chemical compounds. The maximum level of rosavin, rosin and salidroside observed were higher than for any roseroot plant previously reported in literature, and the roseroot clones characterized in this study might therefore prove to be of high pharmacological value.
Forfattere
Lars Løken Granlund Ragnar Eltun Erik Eid Hohle Lars Nesheim Wendy Marie Waalen Mauritz ÅssveenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Paul Eric AspholmSammendrag
Foredrag for Kommunenes Sentralforbund, gruppe på Svanhovd
Forfattere
Trygve S. AamlidSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Alastair James WardSammendrag
Biogas treatment of animal manure is common in Denmark, but still very little developed in Norway. Due to relatively small herds, large distances and low energy prices, costs are a challenge when constructing biogas plants on farm level in Norway. Residues from food industry may be an option to increase the biogas output. In Tingvoll, ca 120 km southwest of Trondheim, a pilot biogas plant for treatment of animal manure will be built on an organic research farm during 2010. Locally available food waste includes residues from fish oil production. Wax, soap and bleaching earth is available. Wax may also be utilized to replace fossil oil in heating boilers, and may hence be less relevant for biogas purpose. On the other side, bleaching soil and soap may contain elements that are not feasible for the biogas process, or for the biogas residue as a soil conditioner. Hence, wax was selected as the first residue to test for its biogas potential.Contact to the Research Centre Foulum at Århus University, Denmark, was established during a study tour in October 2009. Dr. Alastair Ward and his staff at Foulum conducted a trial with fish wax and cattle manure during December and January 2009-2010. The work was paid by the fish oil producer, GC Rieber Oils, Kristiansund, Norway. Bioforsk Organic Food and Farming, Tingvoll is scientifically responsible for the pilot biogas plant at Tingvoll, and has been the active partner in the contact to Research Centre Foulum from the Norwegian side. Århus University is grateful to GC Rieber Oils for the research task, and the permission to publish this report in the university report series.
Forfattere
Espen Govasmark Holen Børge Jessica Stäb Mirja Salkinoja-Salonen Douwe Hoornstra Hilde Marit Østlie Tommy NesbakkSammendrag
Det er ikke registrert sammendrag
Forfattere
Anne-Kristin Løes Alastair James WardSammendrag
Biogas is of interest in organic farming to decrease the dependence of fossil fuels, reduce greenhouse gas emissions and improve the N utilisation of animal manure. Addition of substrates with high energy content increases the gas output. Fish fat from fish oil industry is an interesting option. Studies are needed to assess possible contaminations such as pesticide residues (DDT etc.). The pilot biogas plant at Tingvoll research farm will be the first to treat manure from certified organic farming in Norway, and will be utilised for testing, optimisation and demonstrations.