25 research outputs found

    Potetkvalitet under lagring: effekt av modningsgrad og ventilasjonsstrategier : studier av lagringssykdommen Fusarium rÄte

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    Storage losses of Norwegian potatoes are estimated to approximately 10%. The losses are caused by respiration, transpiration, germination and diseases. These are processes that can be managed by controlling storage conditions and the quality of the potatoes that goes into storage. The main aim of this thesis is to gain knowledge on how to maintain tuber quality and reduce losses during storage, with special emphasis on tuber maturity, ventilation strategies and Fusarium dry rot.Lagring av poteter er nÞdvendig under norske forhold, men innebÊrer samtidig en stor fare for tap av verdier og ressurser. Lagringstapene, som i Norge estimeres til 10%, skyldes biologiske prosesser knyttet til respirasjon, transpirasjon, spiring og sykdomsangrep. For Ä lykkes med lagring er det viktig Ä ha fokus pÄ rÄvarekvalitet, slik som potetens modningsgrad og sykdomssmitte, og pÄ lagringsklima. FormÄlet med denne studien er Ä bidra med kunnskap som hjelper til med Ä opprettholde kvaliteten og redusere tapet under lagring. I arbeidet er det sÊrlig fokus pÄ ventilasjonsstrategier, pÄ modning og pÄ Fusarium rÄte.Foundation for Research Levy on Agricultural Products (FFL) and funding from the Agricultural Agreement (JA), together with Norwegian food industry partners Gartnerhallen AL, Bama Gruppen AS, Findus Norge AS, FellesJuice AS, HOFF SA, Graminor AS, NordGrÞnt, NorgesgrÞnt, Maarud AS and KiMs Norge AS

    Lagringskvalitet i gulrot - kan noe gjĂžres?

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    Storage diseases is a serious challenge in carrots. Effects on storage quality of studies to loosen soil structure, combined with studies of carrot varieties, carrot age and storage conditions are presented in this paper, intended for Norwegian growers

    SCANGREEN 2019-2022: Turfgrass species, varieties and seed mixtures for Scandinavian putting greens. Final results from a four-year testing period.

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    The objective of SCANGREEN 2019-22 was to find species, varieties and seed blends/mixtures of Agrostis, Festuca, Poa and Lolium that are suited for pesticide-free management of putting greens in the two major climatic zones of the Nordic countries and in the northern USA. The four test sites in the Nordic countries were Reykjavik GC, Iceland and NIBIO Apelsvoll in the the northern zone, and NIBIO Landvik, Norway and Smþrum GC, Denmark in the southern zone. The two US test sites were located at Troll Turfgrass Research Facility in Massachusetts and at University of Minnesota. The trials included 30 candidate varieties representing eight different species and subspecies from 13 different seed companies/representatives, and three seed mixtures of red fescue and colonial and creeping bentgrass, a seed mixture of creeping bentgrass and perennial ryegrass and a seed blend of red fescue. Monthly evaluations of overall impression, tiller density, winter hardiness, disease and weed coverage etc., were done from three weeks after sowing in June-September 2019 until October 2022. The trial at Smþrum GC was established in May 2021. The trials were established according to a split-plot design with three blocks (replicates), species on main plots and varieties on subplots. The experimental greens were mown three times per week – Monday, Wednesday, and Friday and deficit-irrigated to 80% of field capacity three to four times per week in periods without sufficient natural rainfall. Fertilizer (mean N–P–K ratio, 100–22–74) was given as completely balanced compound fertilizers every second week. Each experimental green was divided in different management levels: High and low fertilizer rate and high and low mowing. The two fertilizer rates were 10 and 17 g N m−2 yr−1 and the two mowing heights were 3 and 5 mm. Mixtures were managed at both regimes. There was no use of pesticides or plant growth regulators in any of the trials.SCANGREEN 2019-2022: Turfgrass species, varieties and seed mixtures for Scandinavian putting greens. Final results from a four-year testing period.publishedVersio

    Lagringsforholdenes betydning for mengde akrylamid i potetchips

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    Det er stort fokus pÄ akrylamid i mat, da dette stoffet er mistenkt Ä vÊre kreftfremkallende. Akrylamid dannes ved sterk oppvarming av blant annet potetprodukter. Pommes frites og chips er produkter som konsumeres av alle aldersgrupper, og det er derfor viktig Ä senke akrylamid nivÄene. For Ä redusere innholdet et det behov for Þkt kunnskap om lagringsforhold og rÄvarekvalitet, og samspillet mellom disse faktorene. Ut fra tidligere undersÞkelser er det grunn til Ä tro at luftsammensetningen under lagring kan vÊre en viktig faktor. MÄlsettingen med prosjektet var Ä redusere akrylamidinnholdet i potetchips gjennom ny kunnskap om optimale lagringsforhold for poteter. Det var sÊrlig fokus pÄ betydningen av forhÞyede karbondioksidnivÄer, og samspillet mellom luftsammensetning og rÄvarekvalitet.....publishedVersio

    Fusarium spp. i norske poteter

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    Fusarium spp. i norske poteter

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    POTETFRIT - Bedre lagring av industripotet for mindre svinn, hĂžyere kvalitet og redusert innhold av akrylamid

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    Dette prosjektet har hatt fokus pÄ lagringsforholdene for potet til fritering, og pÄ Ä redusere Þkningen i mengde akrylamid som naturlig skjer pÄ lager. Innhold av akrylamid er en viktig faktor for lÞnnsomhet og bÊrekraft i produksjonen av friterte potetprodukter. Akrylamid dannes ved sterk oppvarming av stivelsesholdig mat og er knyttet til utvikling av kreft. Chips og pommes frites konsumeres av alle aldersgrupper, og det har derfor vÊrt stort press pÄ potetindustrien for Ä senke nivÄene. MÄlet med prosjektet var Ä oppnÄ bedre produktkvalitet, lavere akrylamidinnhold og en mer lÞnnsom og bÊrekraftig produksjon av norsk chips og pommes frites. MÄlet skulle nÄs gjennom kunnskap om samspillet mellom rÄvarekvalitet og lagringsforhold. Acrylamide has become an important measure when looking at profitability and sustainability in the potato processing industry. Acrylamide is a possible carcinogenic which is formed in starchy foods during high-temperature cooking processes. Crisps and French fries are consumed by people of all ages and therefore the pressure on the industry has been large to reduce the levels. The aim of the project was to reduce acrylamide content and improve product quality profitability and sustainability in the production of crisps and French fries. Knowledge about the interaction between potato quality and storage conditions were important measures. The importance of elevated CO2 levels on product quality and acrylamide content, was studied.POTETFRIT - Bedre lagring av industripotet for mindre svinn, hÞyere kvalitet og redusert innhold av akrylamidpublishedVersio

    Norsk potetproduksjon 2019

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    Norsk potetproduksjon 2017

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