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Rósa Jónsdóttir

Researcher at Alpha MOS

Publications -  57
Citations -  2585

Rósa Jónsdóttir is an academic researcher from Alpha MOS. The author has contributed to research in topics: Lipid oxidation & DPPH. The author has an hindex of 22, co-authored 56 publications receiving 2093 citations. Previous affiliations of Rósa Jónsdóttir include University of Iceland.

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Total phenolic compounds, radical scavenging and metal chelation of extracts from Icelandic seaweeds

TL;DR: In this article, the potential antioxidant activities of water and 70% acetone extracts from ten species of Icelandic seaweeds were evaluated using three antioxidant assays. But no correlation was found with their TPC, suggesting that other components such as polysaccharides, proteins or peptides in the extracts were more effective chelators of ferrous ions than phenolic compounds.
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Antioxidant Capacities of Phlorotannins Extracted from the Brown Algae Fucus vesiculosus

TL;DR: A process for the effective extraction and fractionation of phlorotannins from Fucus vesiculosus with high antioxidant potentials was investigated, finding no clear relationships between the degree of polymerization, molecular size, and antioxidant activity.
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Enzyme-enhanced extraction of antioxidant ingredients from red algae Palmaria palmata

TL;DR: In this paper, the effect of various protease and carbohydrase treatments on the extraction of polyphenols and other antioxidant ingredients from the red algae Palmaria palmata (dulse) was investigated.
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Characterization of Volatile Compounds in Chilled Cod (Gadus morhua) fillets by gas chromatography and detection of quality indicators by an electronic nose

TL;DR: Volatile compounds in cod fillets packed in Styrofoam boxes were analyzed during chilled storage and ketones, mainly 3-hydroxy-2-butanone, were detected in the highest level at sensory rejection, followed by amines, alcohols, acids, and aldehydes.
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Variations in polyphenol and heavy metal contents of wild-harvested and cultivated seaweed bulk biomass: Health risk assessment and implication for food applications

TL;DR: A health risk assessment indicated that consumption of these seaweed species poses a low risk for humans with regard to heavy metals, and an EU-wide regulation on maximal concentration of heavy metals in seaweeds should be established.