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
Marie E. Olsson Karl-Erik Gustavsson Ingunn M. VågenSammendrag
Effects of heat treatment and storage on quercetin and isorhamnetin content, major and minor components of isorhamnetin and quercetin glucosides and aglycone, were investigated in onion (Allium cepa L.). The sweet onion ‘Recorra" and red onions ‘Hyred" and ‘Red Baron" were cultivated in the south part of Norway, and thereafter stored for eight months. The onions were either not field dried, but stored directly, or field dried and then stored, or field dried and then heat treated before storage. Neither storage nor heat treatment caused any major differences in total flavonol content in the investigated sweet onion as well as in the red onion cultivars. The two major quercetin glucosides differed in their changes in content during storage; quercetin-4¢-glucoside did not show any consistent changes during storage in the two red cultivars, independent of treatment, whereas quercetin-3,4¢-diglucoside increased significantly by 30 or 51 % respectively during storage in ‘Hyred" and ‘Red Baron" in the 24h heat treated onions. Isorhamnetin-4"-glucoside, which might possibly be of special interest from a human health point of view, was present at 2-3 times higher amount in the sweet onion cultivar than in the two red cultivars. Some of the quercetin glucosides present at lower concentrations, isorhamnetin-3,4"-diglucoside, quercetin-3,7,4"-triglucoside, and quercetin-7,4"-diglucoside increased during storage in all treatments in both ‘Hyred" and ‘Red Baron", though sometimes a decrease was found at the end of storage.
Forfattere
Therese With Berge Steve Goldberg Kristin Kaspersen Jan Netland Publikasjonsforfatter Trygve StølanSammendrag
Det er ikke registrert sammendrag
Forfattere
Therese With Berge Steve Goldberg Kristin Kaspersen Jan Netland Øyvind Overskeid Trygve StølanSammendrag
Det er ikke registrert sammendrag
Forfattere
Steve Goldberg Kristin Kaspersen Jan Netland Øyvind Overskeid Trygve StølanSammendrag
Det er ikke registrert sammendrag
Sammendrag
Vinteren i år gledet skifolket med mye snø og stabil kulde. Men var den lange og stabile vinteren bra for gresset? I forskingsanlegget på Landvik har vi for en gangs skyld sett en del spennende vinterskader!
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Jens Kværner Ole Martin Eklo Marit Almvik Randi Bolli Tore Sveistrup Geir Tveiti Oddvar VigdalSammendrag
Det er ikke registrert sammendrag
Forfattere
Jens Kværner Ole Martin Eklo Marit Almvik Tore Sveistrup Geir Tveiti Randi Bolli Oddvar VigdalSammendrag
Det er ikke registrert sammendrag
Forfattere
Jens Kværner Ole Martin Eklo Marit Almvik Randi Bolli Tore Sveistrup Geir Tveiti Oddvar VigdalSammendrag
Det er ikke registrert sammendrag
Forfattere
May-Guri SaethreSammendrag
Urban and peri-urban (UPU) horticulture provides an increasingly important source of income in African countries. A major factor driving the importance of UPU gardening is an increasing marketing opportunity for a growing population of unemployed and unskilled youths in the cities. The potential of UPU gardening is severely undermined by a number of production constraints. Recent field diagnoses in Benin identified severe pest problems and revealed alarming pesticide practices in the UPU areas. Several major pest problems are direct consequences of pesticide abuse that 1) destroys biodiversity required for natural/biological pest control, 2) causes pesticide resistance and pest resurgence and 3) poses personal and environmental hazards. Increasing pesticide use among vegetable producers in UPU gardens in Benin has induced resistance to insecticides in some insect pests. The misuse of pesticides often results in mild to severe human poisonings. Chronic consequences of prolonged exposure to pesticides lack documentation. Additional negative effects are insecticide resistance in insect vectors because of leakage of insecticides to mosquito breeding sites. Insecticide resistance in Anopheles mosquitoes is threatening the success of malaria control programmes. Pesticides which have been banned internationally are commonly used in UPU vegetable production in Africa. Consumer"s consumption of pesticide residues through contaminated products gets little attention. The link between agriculture, environment and health is evident, and climate change contributes to increase already existing challenges.