Blar i forfatter "Mæhre, Hanne K"
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Biochemical composition of live feed used in cod larvae production - As good as it gets, or room for improvement?
Mæhre, Hanne K (Master thesis; Mastergradsoppgave, 2010-01-21)Low survival rate, slow growth and developmental abnormalities during the larval stage are challenges related to aquaculture of marine species. Several studies have shown that feeding the larvae their natural feed source, zooplankton, improves these factors significantly compared to feeding them intensive feeds like rotifers. The nutritional quality of the feed is likely to play a crucial role. ... -
Dietary enrichment of apolipoprotein E-deficient mice with extra virgin olive oil in combination with seal oil inhibits atherogenesis
Cludts, Katrien; Eilertsen, Karl-Erik; Mæhre, Hanne K; Hoylaerts, Marc; Olsen, Jan Ole (Journal article; Tidsskriftartikkel; Peer reviewed, 2011) -
The effect of algae diets (Skeletonema costatum and Rhodomonas baltica) on the biochemical composition and sensory characteristics of Pacific cupped oysters (Crassostrea gigas) during land-based refinement
van Houcke, Jasper; Medina, Isabel; Mæhre, Hanne K; Cornet, Josiane; Cardinal, Mireille; Linssen, Jozef; Luten, Joop (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-20)<p>Oyster refinement, a common practice in France, is aimed at increasing the weight of oyster tissue and influencing the taste properties of the refined oysters. Refinement usually takes place in land-based systems where the oysters are fed with relatively high concentrations of microalgae. In this study the impact of feeding <i>Skeletonema costatum</i> and <i>Rhodomonas baltica</i> on the biochemical ... -
Enzymatic pre-treatment increases the protein bioaccessibility and extractability in dulse (Palmaria palmata)
Mæhre, Hanne K; Jensen, Ida-Johanne; Eilertsen, Karl-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-26)Several common protein extraction protocols have been applied on seaweeds, but extraction yields have been limited. The aims of this study were to further develop and optimize existing extraction protocols and to examine the effect of enzymatic pre-treatment on bioaccessibility and extractability of seaweed proteins. Enzymatic pre-treatment of seaweed samples resulted in a three-fold increase ... -
Heat treatment increases the protein bioaccessibility in the red seaweed dulse (Palmaria palmata), but not in the brown seaweed winged kelp (Alaria esculenta)
Mæhre, Hanne K; Edvinsen, Guro Kristine; Eilertsen, Karl-Erik; Elvevoll, Edel Oddny (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-25)Bioaccessibility of plant proteins has been shown to be inferior to that of proteins of animal origin. Heat treatment has been shown to positively affect this in some plants. The aim of this study was to investigate the effect of heat treatment on bioaccessibility of seaweed proteins. An in vitro gastrointestinal digestion model was used for evaluation of potential effects on the brown seaweed Alaria ... -
Impact of Multiple Ecological Stressors on a Sub-Arctic Ecosystem: No Interaction Between Extreme Winter Warming Events, Nitrogen Addition and Grazing
Bokhorst, Stef; Berg, Matty P.; Edvinsen, Guro Kristine; Ellers, Jacintha; Heitman, Amber; Jaakola, Laura; Mæhre, Hanne K; Phoenix, Gareth K.; Tømmervik, Hans; Bjerke, Jarle W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-30)Climate change is one of many ongoing human-induced environmental changes, but few studies consider interactive effects between multiple anthropogenic disturbances. In coastal sub-arctic heathland, we quantified the impact of a factorial design simulating extreme winter warming (WW) events (7 days at 6–7∘C) combined with episodic summer nitrogen (+N) depositions (5 kg N ha-1) on plant winter physiology, ... -
Nutritional value and storage stability in commercially produced organically and conventionally farmed Atlantic salmon (Salmo salar L.) in Norway
Esaiassen, Margrethe; Jensen, Tonje Kristin; Edvinsen, Guro Kristine; Otnæs, Carina H.A.; Ageeva, Tatiana Nikolaevna; Mæhre, Hanne K (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-16)Salmon feeds have changed over the years, leading to changed biochemical composition of the fish. The main aim of this study was to compare biochemical compositions and storage stability of commercially produced organic and conventional salmon. Organically (n = 40) and conventionally farmed salmon (n = 39) were sampled. The fish were anesthetized, killed by gill cutting and bled before filleting. ... -
Omega-3 Fatty Acids and Cardiovascular Diseases: Effects, Mechanisms and Dietary Relevance
Mæhre, Hanne K; Jensen, Ida-Johanne; Elvevoll, Edel Oddny; Eilertsen, Karl-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-18)ω-3 fatty acids (n-3 FA) have, since the 1970s, been associated with beneficial health effects. They are, however, prone to lipid peroxidation due to their many double bonds. Lipid peroxidation is a process that may lead to increased oxidative stress, a condition associated with adverse health effects. Recently, conflicting evidence regarding the health benefits of intake of n-3 from seafood or ... -
Preclinical and clinical studies on antioxidative, antihypertensive and cardioprotective effect of marine proteins and peptides - A review
Jensen, Ida-Johanne; Mæhre, Hanne K (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-18)High seafood consumption has traditionally been linked to a reduced risk of cardiovascular diseases, mainly due to the lipid lowering effects of the long chained omega 3 fatty acids. However, fish and seafood are also excellent sources of good quality proteins and emerging documentation show that, upon digestion, these proteins are sources for bioactive peptides with documented favorable ... -
Prosessering av sjømat – Endring i næringsinnhold, biotilgjengelighet og helseeffekter
Larsen, Rune; Stormo, Svein Kristian; Eilertsen, Karl-Erik; Mæhre, Hanne K; Jensen, Ida-Johanne; Østerud, Bjarne; Elvevoll, Edel Oddny (Research report; Forskningsrapport, 2010-11-29)Rapporten oppsummerer hvordan prosessering kan påvirke innholdet av næringsstoffer i sjømat, samt hvordan biotilgjengeligheten til ulike stoffer kan endres som følge av prosessbetingelsene. I tillegg er det kort redegjort for vitenskapelig status på helseeffektene av sjømatkonsum, samt hvilke ernæringsmessige faktorer som gjør sjømat til et særegent næringsmiddel. Økt prosesseringsgrad av sjømat ... -
Seaweed proteins - how to get to them? Effects of processing on nutritional value, bioaccessibility and extractability
Mæhre, Hanne K (Doctoral thesis; Doktorgradsavhandling, 2016-03-11)As a consequence of the expected population growth towards 2050, the demand for food, and in particular proteins, will increase. Due to limited resources of arable land and freshwater, this increase cannot come in the agricultural sector alone. At present, the utilization of marine environments for food production is low and should be increased. Seaweeds are fast-growing plants occurring in marine ... -
An Update on the Content of Fatty Acids, Dioxins, PCBs and Heavy Metals in Farmed, Escaped and Wild Atlantic Salmon (Salmo salar L.) in Norway
Jensen, Ida-Johanne; Eilertsen, Karl-Erik; Otnæs, Carina Helen Almli; Mæhre, Hanne K; Elvevoll, Edel O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-19)In this paper, we present updated data on proximate composition, amino acid, and fatty acid composition, as well as concentrations of dioxins, polychlorinated biphenyls (PCBs), and selected heavy metals, in fillets from farmed (n = 20), escaped (n = 17), and wild (n = 23) Atlantic salmon (<i>Salmo salar</i> L.). The concentrations of dioxins (0.53 ± 0.12 pg toxic equivalents (TEQ)/g), dioxin-like ...