Blar i Bergen Open Research Archive på forfatter "Jordheim, Monica"
-
Anthocyanin Profile and Antioxidant Activity of Edible Leaves of Dissotis brazzae Cogn (Melastomataceae)
Adaku, Christopher; Skaar, Irene; Gumisiriza, Hannington; Byamukama, Robert; Jordheim, Monica; Andersen, Øyvind M (Journal article, 2020)Anthocyanins are colored bioactive phytochemicals in the class of flavonoids with high potential as dietary antioxidants. Demand for anthocyanins in functional food and nutraceutical industries has continued to increase ... -
Anthocyanin Profile and Antioxidant Property of Anti-asthma Flowers of Cordyline terminalis (L.) Kunth (Agavaceae)
Adaku, Christopher; Skaar, Irene; Byamukama, Robert; Jordheim, Monica; Andersen, Øyvind M (Journal article; Peer reviewed, 2020)Cordyline terminalis flower is traditionally used to treat asthma and the purple color of the flower is suggestive of anthocyanins. The purpose of this study was to characterize and determine the antioxidant property of ... -
Characterization of Polyphenolic Content in the Aquatic Plants Ruppia cirrhosa and Ruppia maritima —A Source of Nutritional Natural Products
Enerstvedt, Kjersti Hasle; Lundberg, Anders; Jordheim, Monica (Peer reviewed; Journal article, 2018)Herein, the polyphenolic content in extracts of Ruppia cirrhosa (Petagna) Grande and Ruppia maritima L.was fully characterized for the first time. High amounts of the main compound chicoric acid (CA) (≤30.2 ± 4.3 mg/g) ... -
Improving students learning process in a small class setting ‐ chemistry course in spectroscopy
Jordheim, Monica (UPED-skrift, Working paper, 2016) -
Isolation and Identification of Flavonoids Found in Zostera marina Collected in Norwegian Coastal Waters
Enerstvedt, Kjersti Hasle; Jordheim, Monica; Andersen, Øyvind M (Peer reviewed; Journal article, 2016-05-26)In extracts of the seagrass Zostera marina, collected in coastal waters of West-Norway, fourteen different flavones and high amounts of rosmarinic acid were identified. Five of the flavones were found to be sulphated, among ... -
Isolation, identification and properties of pyranoanthocyanins and anthocyanin forms
Jordheim, Monica (Doctoral thesis, 2007-06-22)This dissertation focuses on isolation and structural elucidation of anthocyanins, and their chemical properties. The characterization of anthocyanins from castor (Ricinus communis), fourteen cultivars of European gooseberry ... -
Purple anthocyanin colouration on lower (abaxial) leaf surface of Hemigraphis colorata (Acanthaceae)
Skaar, Irene; Adaku, Christopher; Jordheim, Monica; Byamukama, Robert; Kiremire, Bernard T.; Andersen, Øyvind M (Peer reviewed; Journal article, 2014-09)The functional significance of anthocyanin colouration of lower (abaxial) leaf surfaces is not clear. Two anthocyanins, 5-O-methylcyanidin 3-O-(3″-(β-glucuronopyranosyl)-β-glucopyranoside) (1) and 5-O-methylcyanidin ... -
Quantification of Polyphenols in Seaweeds: A Case Study of Ulva intestinalis
Wekre, Marie Emilie; Kåsin, Karoline; Underhaug, Jarl; Holmelid, Bjarte; Jordheim, Monica (Peer reviewed; Journal article, 2019-12-03)In this case study, we explored quantitative 1H NMR (qNMR), HPLC-DAD, and the Folin-Ciocalteu assay (TPC) as methods of quantifying the total phenolic content of a green macroalga, Ulva intestinalis, after optimized ... -
Variation in Phenolic Chemistry in Zostera marina Seagrass along Environmental Gradients
Dybsland, Cecilie Sævdal; Bekkby, Trine; Enerstvedt, Kjersti Hasle; Kvalheim, Olav M; Rinde, Eli; Jordheim, Monica (Journal article; Peer reviewed, 2021)Chemical ecology has been suggested as a less time-consuming and more cost-efficient monitoring tool of seagrass ecosystems than traditional methods. Phenolic chemistry in Zostera marina samples was analyzed against latitude, ...