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AP3. Skånsomme metoder for reduksjon av Listeria på laks og ørret - Effekt på farge og tekstur
Get PDFRapporten inkluderer forsøksoppsett og resultater fra forsøk som er gjennomført i prosjektet DeList, AP3 i perioden januar til juni 2024. Ferskt råstoff av laksefilet (biter) og sløyd ørret er benyttet i forsøkene. Dekontamineringsforsøk er gjennomført ved skylling i vann, skylling i pH-justert vann og dypping i løsning med (a) eddiksyre; (b) Verdad N6; (c) nisin; (d) kitosan; (e) klor; og (f) plasmaaktivert vann (PAW).AP3. Skånsomme metoder for reduksjon av Listeria på laks og ørret - Effekt på farge og teksturpublishedVersio
Intracellular metabolome elucidates the time-of-day-dependent response to hydrogen peroxide in salmonid gill epithelial cells
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Økt verdiskaping for norske kålvekster – delrapport 2. Effekt av produksjonsfaktorer på sensorisk- og helserelatert kvalitet i hodekål og blomkål
Get PDFNitrogen (N) og svovel (S) er viktige næringsstoffer for planter, som blir bl.a. brukt som byggesteiner i plantestoffer. Både total mengde av N og S og forhold mellom dem kan derfor påvirke kvaliteten av kålvekstene. Samtidig er tilgangen på vann en viktig faktor i plantens utvikling og kan påvirke kvaliteten. Det ble gjennomført gjødslingsforsøk med hodekål og blomkål (2 år, 2017-2018), samt tørkestressforsøk med blomkål (2 forsøk i 2018). De to vekstårene var værmessig veldig forskjellige, noe som påvirket resultatene i feltforsøkene ute hos kommersielle dyrkere. I begge år hadde lavt N-nivå betydning for plantestørrelse og friskhet, men S-nivå påvirket ikke vekstegenskapene. Nivå av N- og S-gjødsel påvirket både sensoriske og kjemiske innholdsstoffer i ulik grad og ulikt de to forsøksårene. Se sammendrag side 1-7. Tørkestress påvirket ikke den synlige kvaliteten av blomkål, men førte til lavere innhold av sukker og vitamin C, og høyere konsentrasjon av aromastoffer. Rapporten ble tilgjengelig for prosjektdeltakere mars 2021 og publisert som åpne rapporter juni 2024 (del 1) og november 2024 (del 2).Økt verdiskaping for norske kålvekster – delrapport 2. Effekt av produksjonsfaktorer på sensorisk- og helserelatert kvalitet i hodekål og blomkålpublishedVersio
Update on assessment of risk of introduction of Echinococcus multilocularis to mainland Norway
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Canned complementary porridges for infants and young children (6–23 months) based on African indigenous crops; nutritional content, consistency, sensory, and affordability compared to traditional porridges based on maize and finger millet
Get PDFChild malnutrition is a major health problem in Sub-Saharan Africa. Complementary foods made from African indigenous and locally available raw materials are often low in protein and nutrients. It is, therefore, important to supply complementary foods that are nutritious and affordable, and with an acceptable consistency and taste. The objective of this study was to develop, on a pilot scale, food-to-food fortified, convenient, canned complementary porridges based on blends of African indigenous crops, i.e., orange fleshed sweet potato (OFSP) flour, and leguminous (i.e., cowpea, and Bambara groundnut) and cereal flours (i.e., teff, finger millet, maize, and amaranth), and milk powder. Plant-based, African complementary foods are often lacking in vitamin A, zinc, iron, and energy. Porridge with OFSP on a 32% dry weight (dw) basis achieved recommended levels of vitamin A (530 µg per 100 g dw). Satisfactory energy (431 Kcal per 100 g dw) was obtained by supplementation of vegetable oil. A nutritious, low-cost porridge (costing 0.15 € per 100 g can) that fulfills consistency constraints was obtained by including supplements of zinc and iron salts as ingredients. The solids content and thus protein/energy could be significantly increased using protein fractionated or germinated cowpea flours without compromising on viscosity. The sensory profile was characterised by more intense vegetable, leguminous, and malty flavours as compared to traditional reference porridges.publishedVersio
Microalgae suspension as a source of n-3 long-chain PUFA in feed for Atlantic Salmon (Salmo salar L) – Technical constraints and nutritional quality
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Heat-sealable bioplastic films of blended locust bean and potato byproducts for active packaging of fatty foods: Cheese and oat cookies as case studies
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Raman spectroscopy as a tool for characterisation of quality parameters in Norwegian grown apples during ripening
Get PDFThis study shows for the first time the feasibility of Raman spectroscopy as a non-destructive method to follow the ripening process of apple fruits. Two different varieties of apples were studied: ‘Aroma’ and ‘Elstar’. By visual inspection, Raman spectra showed that the starch content was higher in ‘Elstar’ apples compared to ‘Aroma’. The degradation of starch over time could be detected in the Raman spectra, indicating that the method can be used to monitor the ripening process. The ripeness markers starch index, soluble solids content (SSC), and the sugars glucose, fructose and sucrose were determined with traditional destructive methods. Cross validated calibration models based on Raman spectroscopy were obtained for all quality parameters, and test set validation offered good results, with R2 in the range 0.4–0.86 for ‘Aroma’ and 0.4–0.95 for ‘Elstar’, respectively. The regression coefficients showed that the calibrations relied on Raman bands associated with starch and different sugars. The results suggest that Raman spectroscopy in the future could be used to determine the optimal time of harvesting and to sort apples into different degrees of ripeness.publishedVersio
Nutritional value of Ethyl Ester oils in fish diets: A review on their potential impact on growth and health
Get PDFThe Norwegian Pelagic sector plays a significant role in producing pelagic fish products for human consumption, including concentrated marine omega-3 fatty acids (FA) used in dietary supplements. To fully utilize fish sources, the sector must explore to use valuable side stream products as ingredients in aquaculture feeds, such as ethyl ester (EE) oils derived from production of concentrated omega-3 FA for dietary supplement. Despite annual production of approximately 10,000 tons of EE oils in Norway, there is limited knowledge about their suitability in aquafeeds. This knowledge gap may stem from the absence of EE in aquatic animals' natural diets, unlike in human dietary supplements. Moreover, varying FA compositions of EE oils used in different fish trials present challenges in drawing definitive conclusions about their effects. Fish metabolism differs from mammals in digesting dietary lipids, lacking the necessary lipase enzymes for monoacylglycerol production during TAG digestion. This may affect the efficiency of lipid transport and metabolism in salmonids, potentially influencing intestinal health and overall lipid metabolism. Furthermore, studies suggest lower digestibility of EE oils compared to free FA or TAG forms, indicating potential limitations in their re-esterification process in enterocytes. Concerns also arise regarding ethanol release during EE hydrolysis in the gut and its potential impact on intestinal health. Additionally, EE oils' susceptibility to oxidation suggests variations in stability in feeds depending on composition and antioxidant content. In SalmoE2, we aim to assess the safety and suitability of EE oils in salmonid diets, addressing the challenge of locally sourcing sustainable ingredients with low CO2 footprints. Understanding the effects of EE oils on salmon and trout performance, health, and fillet quality is crucial for both the pelagic industry and feed producers, optimizing the exploitation of side stream products while promoting sustainable marine product usage. Quantitative data on safety, optimal inclusion, and potential benefits of EE oil use in salmonid diets are essential.Nutritional value of Ethyl Ester oils in fish diets: A review on their potential impact on growth and healthpublishedVersio
