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.
2026
Sammendrag
Palmaria palmata is a protein-rich red seaweed containing essential amino acids and bioactive compounds with potential applications in aquaculture nutrition and fish health. In this study, liquid extracts enriched in soluble compounds were obtained through mechanical fractionation of P. palmata. The recovered fractions were characterized for their lipid and amino acid composition and evaluated for cytotoxic and immunomodulatory response in salmon head kidney-derived SHK-1 cell line (Salmo salar) cell lines as a first step towards assessing their suitability as functional ingredients for aquaculture feed applications.
Sammendrag
There is growing interest in simple and resource-efficient recovery strategies that maximize pigment yield while minimizing chemical inputs and processing intensity. Mechanical fractionation using twin-screw press offers a promising approach by releasing soluble intracellular compounds into a liquid fraction while simultaneously generating a solid fraction that can be further valorized. In this study, freshly harvested P. palmata biomass was mechanically fractionated prior to ammonium sulfate precipitation, dialysis, and freeze-drying to produce a phycoerythrin. This approach aims to maximize R-PE recovery through low-input processing while reducing chemical consumption and energy requirements compared with conventional extraction methods. The distribution and recovery of R-PE within the generated process streams were evaluated to assess the potential of mechanical fractionation as a primary recovery step in phycoerythrin extraction.
Sammendrag
Brown seaweeds are rich in sulphated polysaccharides, minerals, proteins, and other bioactive compounds suitable for cascading biorefinery. Ascophyllum nodosum, an abundant North Atlantic species, contains fucoidan, laminarin, and mannitol with potential food and feed applications. Efficient utilisation requires fractionation strategies that recover target compounds while enabling further valorisation of the remaining biomass. Here, a food-compatible process using water and citric acid was applied to recover fucoidan- and alginate-rich fractions and retain residual biomass for further use. Material distribution, concentration efficiency, and recovery were evaluated across the process, which recovered 57.3% of the initial dry biomass as value-added products.
Sammendrag
Mechanical dewatering using a twin-screw press not only reduces biomass moisture content but also facilitates the partitioning of valuable biochemical components between liquid and solid fractions. While mechanical dewatering is commonly applied as a low-energy pre-treatment step, its potential as a fractionation strategy for brown seaweed biorefinery remains largely unexplored. Pressure-driven separation generates a liquid fraction containing soluble compounds and a solid fraction enriched in structural biomass components. In this study, different pre-treatments were combined with twin-screw pressing to evaluate their influence on the distribution of protein-bound amino acids, fucose, and uronic acids in Alaria esculenta. The results demonstrated distinct partitioning patterns, with higher concentrations of all three component groups generally retained in the solid fraction, highlighting the potential of mechanical dewatering as an initial fractionation step in cascading seaweed biorefinery. This approach aims to establish mechanical dewatering as a scalable, low-energy entry point for downstream processing, supporting efficient valorization and zero-waste processing.
Sammendrag
Brown seaweed A.nodosum has been widely used for feed and biostimulant purposes for many years. However, due to its high-water content (ranging >80% MC) it presents challenges like increasing costs of transportation and storage for downstream processing. Therefore, an effective dewatering step is essential to reduce the moisture content, concentrate the biomass and improve handling and processing efficiency. Mechanical dewatering is commonly applied as a pretreatment step in biorefining as it removes readily mobile water and reduces the moisture available for microbial deterioration during handling and storage. However, the efficiency of mechanical dewatering can be limited by the strong water-holding capacity of seaweed tissues and cell-wall components, resulting in substantial residual moisture in the pressed biomass. In this context, this study evaluates calcium chloride (CaCl2 ) and magnesium chloride (MgCl2 ) as pretreatment agents prior to hydraulic pressing of A. nodosum, assessing their effects on dewatering efficiency and the partitioning of protein-bound amino acids between the liquid and solid fractions.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Lampros LamprinakisSammendrag
The valorization of seafood by-products is often framed as a technical opportunity, yet adoption in practice depends on whether small and medium-sized enterprises (SMEs) can embed new systems in their operational, economic, spatial, and regulatory realities. Drawing on survey-based evidence from Greek fisheries and seafood enterprises, the analysis identifies key operational and economic constraints and translates them into a configurational model of adoption credibility for blue SMEs. In the proposed TIDE framework, adoption credibility depends on alignment across four distinct dimensions: Technological Fit, Institutional Enablement, Deployment Fit, and Economic-Organizational Fit. The framework links firm-level conditions with techno-economic performance metrics, including cost–benefit indicators (e.g., CAPEX/OPEX per unit, avoided disposal costs, payback period) and system optimization variables, such as throughput variability and process efficiency. The theoretical insights illustrate that optimal valorization outcomes depend on the alignment between system design and SME-specific constraints, particularly in relation to deployment models (on-site units, shared hubs, and mobile services). The study provides a structured approach for integrating cost–benefit analysis and technical optimization with real-world adoption conditions, offering practical guidance for designing scalable, low-CAPEX/OPEX valorization solutions.
Forfattere
Marie Vestergaard Henriksen Annette Bär Line Johansen Anne Sofie Bråge Fjeldstad Ingrid RoaldsenSammendrag
I dette heftet kan du lære om hvordan du lager din egen blomstereng med frø fra viltvoksende blomsterengarter som er vanlige i din region, og få øynene opp for mangfoldet av pollinerende insekter som besøker blomstene i enga.
Forfattere
Karen Ane Frøyland SkjennumSammendrag
The widespread use of per- and polyfluorinated substances (PFAS) over the past several decades has resulted in extensive soil contamination. Soil serves as a significant reservoir and a potential long-term source of PFAS. While the high stability and persistence of PFAS facilitates accumulation in soil, some PFAS, such as several perfluoroalkyl acids (PFAAs), exhibit relatively high mobility allowing them to leach into the surrounding environment and possibly travel long distances. Remediation of contaminated sites is necessary to avoid severe environmental and human impacts. Soil stabilization represents a non-destructive soil remediation method which involves incorporation of binding materials (sorbents) into the contaminated soil to reduce contaminant leaching and bioavailability.