title: Antioxidative activity and chemical constituents of edible terrestrial alga Nostoc commune Vauch.
abstract: The extract of terrestrial alga Nostoc commune Vauch. has high antioxidative activity. Our study on N. commune Vauch. resulted in the isolation of two β-ionone derivatives, nostocionone and 3-oxo-β-ionone, together with four indole alkaloids, scytonemin, reduced scytonemin, N-(p-coumaroyl)tryptamine, and N-acetyltryptamine. The structures of the isolated compounds were determined on the basis of 1D and 2D NMR and MS analyses. Among these isolates, nostocionone and reduced scytonemin demonstrated strong antioxidative activities which were assessed by using a β-carotene oxidation assay.
authors: Department of Materials Science and Technology, Faculty of Engineering, Gifu University, Gifu, Japan.
authors: Masayuki
authors: M
authors: Ninomiya
authors: Hitoshi
authors: H
authors: Satoh
authors: Yuji
authors: Y
authors: Yamaguchi
authors: Hiroyuki
authors: H
authors: Takenaka
authors: Mamoru
authors: M
authors: Koketsu
mesh_terms: D000975:Antioxidants / Q000737:chemistry* / Q000302:isolation & purification; D026121:Indole Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D045792:Norisoprenoids / Q000737:chemistry* / Q000302:isolation & purification; D050501:Nostoc commune / Q000737:chemistry*; D010084:Oxidation-Reduction
chemical_list: D000975:Antioxidants; D026121:Indole Alkaloids; D045792:Norisoprenoids