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Survey data on public perceptions of salmon aquaculture industry in Norway, Tasmania, and Iceland
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Diagnosing the cage of covariance to increase understanding and robustness of spectroscopic calibration models
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Data fusion strategies for the integration of diverse non-destructive spectral sensors (NDSS) in food analysis
Full text linkThe evolving landscape of agri-food systems, driven by climate change and population growth, necessitates innovative approaches to ensure food integrity, safety, and sustainability. This review explores the role of data fusion strategies, particularly focusing on non-destructive spectroscopic sensors (NDSS) in three key application contexts: in-field monitoring, on/in-line food processing, and food quality authentication. Various data fusion scenarios, including fusing spectra from different spectroscopic platforms, integrating images and spectra, and combining non-spectroscopic sensor data with spectroscopic ones are reviewed. Focus is set on practical considerations, such as selecting the level of data fusion, defining blocks, variable selection, and validation methods, highlighting the importance of tailored approaches based on research aims and data characteristics. While combining information from diverse sensors generally enhances information extraction and modelling performance, their implementation in routine applications is still limited and especially studies focused on data fusion models’ performance over time and their maintenance are lacking.publishedVersio
Gene Expression and Phenotypic Assessment of Egg Quality across Developmental Stages of Atlantic Cod throughout the Spawning Season
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Zinc nutrition at first feeding imprints a programming effect on growth and hepatic lipid metabolism in juvenile rainbow trout
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Membrane Separation of Chicken Byproduct Hydrolysate for Up-Concentration of Bioactive Peptides
Full text linkMembrane processes, such as microfiltration, ultrafiltration, and nanofiltration, are increasingly used for various applications in both upstream and downstream processing. Membrane-based processes play a critical role in the field of separation/purification of biotechnological products, including protein production/purification. The possibility of using membranes to separate peptides from a chicken byproduct hydrolysate and the effect of the performed downstream processing on the DPP-IV dipeptidyl peptidase IV (DPP-IV) inhibitory activity of mechanical deboning chicken residue (MDCR) has been investigated. The chicken byproduct hydrolysate was prepared by enzymatic hydrolysis followed by microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO) separation. Comparing all separation treatments, hydrolysates processed only by MF and UF show the best DPP-IV inhibition (59.5–60.0% at 1 mg/mL and 34.2–40.7% at 0.5 mg/mL). These samples show dose-responsive behavior. Bioactivity was correlated with molecular weight distribution profiles and average molecular weights. The nanofiltration process notably decrease the inhibitory activity, and these permeates show low DPP-IV inhibition (9.5–21.8% at 1 mg/mL and 3.6–12.1% at 0.5 mg/mL). The size-exclusion chromatography–organic carbon detection–organic nitrogen detection (LC–OCD–OND) analysis confirms that NF and RO would retain the bioactive peptides in the concentrate in comparison to MF and UF. Bioactivity was correlated with molecular weight distribution profiles and average molecular weights. Permeates after ultrafiltration show an IC50 value of 0.75 mg/mL, comparable to other potent DPP-IV inhibitors derived from various food sources, and significantly more potent compared to the microfiltration sample, which shows an IC50 value of 1.04 mg/mL. The average molecular weight of the permeates calculated from the SEC chromatograms was 883 g/mol for UF and 1437 g/mol for MF. Of the four membranes studied, the UF membrane shows the best separation properties with respect to maximizing the yield and up-concentration of the bioactive peptides. Overall, UF was demonstrated to be a feasible technology for the removal of the undesired high-molecular-weight substances and up-concentration of small-molecular-weight bioactive peptides from chicken byproduct hydrolysate. These peptides might exhibit biological activity and could offer several health benefits. There is a high potential for the use of bioactive peptides, and more research in this field can lead to promising results that have significant effects in the food and medical industries.publishedVersio
Co‑creating coastal sustainability goals and indicators
Full text linkIndicators can be powerful tools to measure progress towards achieving societal goals, and many indicators have been developed for sustainability goals nationally and internationally. When indicators are developed solely through top-down approaches without engaging local knowledge, they often fall short of capturing local perceptions and concerns relevant to decision-making. The aim of this project was to co-create a Coastal Barometer and its component indicators, together with local knowledge-holders and communities, using the Ocean Health Index as a framework. As a frst step, local knowledgeholders from six communities dispersed across Northern Norway were invited to articulate local sustainability goals and the required knowledge for eight broad topics pertaining to global OHI goals: small-scale fsheries, food production, sense of place, tourism, food production, clean waters, carbon storage and economy and livelihoods. In this paper, our main focus is the co-design phase of the Coastal Barometer, namely eliciting sustainability goals. We thus, present locally desired sustainability goals and sub-goals and the process of eliciting these goals. We also include suggestions from local knowledge-holders on how to reach these goals (i.e. proposed management measures), along with researchers’ assessment of data availability (part of the co-production process) for developing indicators to measure progress towards these goals. Finally, we discuss the benefts and challenges of co-developing sustainability goals and indicators with local knowledge-holders. We conclude that co-design can increase the quality of sustainability assessments by enriching the view of coastal sustainability. This knowledge can subsequently be used to align indicators with local sustainability goals as well as to the local context where the indicators will be applied. Blue growth · Ecosystem services · Public participation · Sustainability indicators · Sustainable development goals · Ocean health indexpublishedVersio
More sustainable use of aquaculture cleaner fish: collagen-rich protein hydrolysates from lumpfish (Cyclopterus lumpus) – effects of
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Evaluering av auksjonsplikten for fryst torsk og sei - Faglig sluttrapport
Full text linkDenne rapporten evaluerer prøveordningen med delvis auksjonsplikt for fryst sløyd og hodekappet (H/G) torsk og sei som ble igangsatt ved årsskiftet 2021/2022. Muligheten for å overta egen fangst ble også fjernet. Ordningen har sin bakgrunn i lav andel fryst H/G hvitfisk solgt på auksjon gjennom de to største salgslagene for fryst hvitfisk, Norges Råfisklag og Sunnmøre og Romsdal Fiskesalgslag (Surofi). Formålet med prøveordningen er derfor å sikre en mest mulig åpen konkurranse om råstoffet, herunder at industrien som bearbeider fisk i Norge får tilstrekkelig tilgang på råstoff til sin virksomhet. Evalueringen er basert på to hele år (2022 og 2023) med delvis auksjonsplikt. Resultatene viser at auksjonsplikten har fungert etter hensikten ved at andelen fryst råstoff av torsk og sei tilbudt i auksjonene til Råfisklaget og Surofi økte betraktelig i 2022 og 2023 sammenlignet med tidligere år. I 2022 var konkurransen om fryst råstoff spesielt høy fra utenlandsk industri og det fryste råstoffet betydelig dyrere enn ferskt, noe som bidro til at industrien i Norge i større grad benyttet ferskt råstoff i sin produksjon. Videre finner vi eksempler på at auksjonsplikten kan omgås ved at partier som tilbys i auksjonen legges ut med startpris satt lik aksept- og referansepris, noe som gir lav sannsynlighet for oppnådd salg i auksjonen, særlig i et nedadgående marked slik vi hadde for sei i store deler av 2023. Partiet kan deretter kjøpes på kontrakt av selskap i eget konsern, noe som bidrar til at råstoffet blir mindre tilgjengelig i et åpent marked. Justeringer av regelverket vil trolig kunne bidra til at en høyere andel av tilbudt kvantum i auksjonen også blir solgt.Evaluering av auksjonsplikten for fryst torsk og sei - Faglig sluttrapportpublishedVersio
When all you have is a hammer - integration challenges in coastal zone planning
Full text linkThis paper critically examines the evolution of integration as a concept in coastal zone planning through an analysis of Norwegian municipal coastal zone plans spanning a 35-year period. By drawing on the framework of governmentality, we show how the coastal zone and the activities taking place there are being subject to problematizations, rationalizations and technologies for promoting integration. This illustrates how previous spatial dispositions themselves become problematized at later points, giving rise to new rationalizations and new technologies of governing, revealing a dynamic redefinition of integration in response to complex coastal governance challenges. What integration entails is not a given. Instead, it’s a fluid concept, evolving over time in meaning and intent. The paper also shows how ambitions for integrated or comprehensive planning can obscure the purpose of planning and increase complexity. With integration being framed as an undisputed answer to conflicts in the coastal zone, the difficulty of managing the multitude of coastal activities does not lead to a critical discussion on whether ‘integration’ is a fruitful ambition. Instead, it becomes an argument for yet more integrative efforts.publishedVersio