Results 171 to 180 of about 2,431 (208)
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Plasma-Polymerized Phlorotannins and Their Enhanced Biological Activities
Journal of Agricultural and Food Chemistry, 2020Here, we investigated the effect of cold plasma (CP) on the biological activities of phloroglucinol. Phloroglucinol (7.92 and 15.84 mM in methanol) was treated with air dielectric barrier discharge plasma at 250 W. In vitro, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activity and ferrous-reducing antioxidant power (FRAP) values of ...
Hyun-Joo Kim +6 more
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Phlorotannins of phaeophycea Laminaria ochroleuca
Phytochemistry, 1980Abstract From the mixture of acetylated phenols of Laminaria ochroleuca several fractions consisting of one or more components were isolated and analysed. Several substances, new or known from other seaweeds were identified: tetraphlorethol-A-nonacetate, fucophlorethol-B-octacetate, fucodiphlorethol-C-decacetate, pentafuhaloltridecacetate, and ...
Marieluise Koch +2 more
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Quantitative determination of major phlorotannins in Ecklonia stolonifera
Archives of Pharmacal Research, 2010Ecklonia stolonifera is a rich source of phlorotannins, which are responsible for the potent pharmacological effects associated with this seaweed. The purpose of this study was to develop a reversed-phase high-performance liquid chromatography method for the simultaneous determination of three major phlorotannins, eckol, dieckol, and ...
Hyun Ryul, Goo +2 more
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The New Products from Brown Seaweeds: Fucoxanthin and Phlorotannins
2022The brown seaweed industry has been established to produce three major traditional products including alginate, mannitol and iodine, however, is facing challenges to expand more product profiles. The innovation of the brown seaweed industry has been extended to minor bioactive compounds, such as fucoxanthin and phlorotannins, by using integrated ...
Yan, Xiaojun +4 more
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Phlorotannins are Polyphenolic Metabolites of Brown Algae
Russian Journal of Marine Biology, 2018This review is devoted to the analysis of publications on studies of phlorotannins, which are polyphenolic metabolites of brown algae. Their properties, the pathway of biosynthesis, and the structural diversity and classification of phlorotannins, as well as the methods for their isolation and determination of their metabolic profiles, are examined ...
T. I. Imbs, T. N. Zvyagintseva
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Biochemical Systematics and Ecology, 1992
Abstract Recent work indicates that the responses of marine hervibores to brown algal (Phaeophyta) phlorotannins (polyphloroglucinols) differ between herbivores from temperate North America and Australasia. One possible explanation for this difference is that phlorotannins from algae from the two regions differ chemically, and hence affect hervibores
Ian A. Van Altena, Peter D. Steinberg
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Abstract Recent work indicates that the responses of marine hervibores to brown algal (Phaeophyta) phlorotannins (polyphloroglucinols) differ between herbivores from temperate North America and Australasia. One possible explanation for this difference is that phlorotannins from algae from the two regions differ chemically, and hence affect hervibores
Ian A. Van Altena, Peter D. Steinberg
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Extraction and Purification of Phlorotannins from Brown Algae
2015The interest in the physiological roles and bioactivities of plant phenols has increased over the past decades. In seaweeds, many investigations have dealt with phenolic compounds of Phaeophyceae (phlorotannins), even though little is known so far about the ecophysiological variations of their pool or their biosynthetic pathways.
Ar Gall, Erwan +4 more
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Phlorotannins as Radical Scavengers from the Extract of Sargassum ringgoldianum
Marine Biotechnology, 2006To screen algal phlorotannins with antioxidative activities, 50% ethanol extracts of 25 Japanese marine algae were evaluated. Scavenging activity against superoxide anion radicals was frequently found with a high content of total phenolic compounds.
Masaaki, Nakai +3 more
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Antimicrobial effect of phlorotannins from marine brown algae
Food and Chemical Toxicology, 2012Marine organisms exhibit a rich chemical content that possess unique structural features as compared to terrestrial metabolites. Among marine resources, marine algae are a rich source of chemically diverse compounds with the possibility of their potential use as a novel class of artificial food ingredients and antimicrobial agents.
Sung-Hwan, Eom +2 more
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Characterization of Phlorotannins from Brown Algae by LC-HRMS
2015Phlorotannins are a class of polyphenols found in brown seaweeds that have significant potential for use as therapeutics, owing to their wide range of bioactivities. Molecular characterization of phlorotannin-enriched extracts is challenging due to the extreme sample complexity and the wide range of molecular weights observed.
Melanson, Jeremy E. +1 more
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