Results 161 to 170 of about 3,120 (187)

Quantitative determination of major phlorotannins in Ecklonia stolonifera

Archives of Pharmacal Research, 2010
Ecklonia 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, Jae Sue, Choi, Dong Hee, Na   +2 more
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Are differences in the responses between North American and Australasian marine herbivores to phlorotannins due to differences in phlorotannin structure?

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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Phlorotannins as Radical Scavengers from the Extract of Sargassum ringgoldianum

Marine Biotechnology, 2006
To 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, Norihiko, Kageyama, Koichi, Nakahara, Wataru, Miki   +3 more
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Antimicrobial effect of phlorotannins from marine brown algae

Food and Chemical Toxicology, 2012
Marine 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, Young-Mog, Kim, Se-Kwon, Kim   +2 more
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Characterization of Phlorotannins from Brown Algae by LC-HRMS

2015
Phlorotannins 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., MacKinnon, Shawna L.   +1 more
openaire   +3 more sources

Antioxidant activities of crude phlorotannins from Sargassum hemiphyllum

Journal of Huazhong University of Science and Technology [Medical Sciences], 2016
Brown algae are well known as a source of biologically active compounds, especially those having antioxidant activities, such as phlorotannins. In this study we examined the antioxidant activities of crude phlorotannins extracts (CPEs) obtained from Sargassum hemiphyllum (SH) and fractionated according to the molecular weights.
Zhi-Li, Zhao, Xiao-Qing, Yang, Zhong-Qing, Gong, Ming-Zhu, Pan, Ya-Li, Han, Yi, Liu   +5 more
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Allocation Patterns of Phlorotannins in Antarctic Brown Algae

Phycologia, 2007
Abstract Brown algae from tropical and temperate regions of the world's oceans have been shown to contain phlorotannins as typical primary and secondary metabolites. Here, phlorotannin contents of nine abundant Antarctic brown algal species were determined, which ranged between 0.5 and 9% DW.
Katrin Iken, Charles D. Amsler, Joanna M. Hubbard, James B. McClintock, Bill J. Baker   +4 more
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Sulphated phlorotannins from the brown algaPleurophycus gardneri

Phytochemistry, 1992
Abstract Eight phlorotannins were isolated and identified from an aqueous extract of the Pacific brown alga Pleurophycus gardneri . All compounds are composed of one or two phloroglucinol units, and six of them are conjugated with at least one sulphate group.
Karl-Werner Glombitza, Werner Kno¨ss
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Phlorotannins as Marine‐Derived Polyphenols for Advancing Cosmeceutical Formulations

Chemistry & Biodiversity
ABSTRACT Phlorotannins are polyphenolic metabolites mostly derived from brow algae belonging to families such as Fucaceae , Alariaceae , and Sargassaceae .
Mahdiyeh Nasiri, Mohammad Amin Langarizadeh, Amirhossein Aghilinasab, Asma Amani, Marziye Ranjbar Tavakoli, Fariba Sharififar   +5 more
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Impact of phlorotannins on cardiovascular diseases

2023
Sónia J. Amarante, Marcelo D. Catarino, Artur M.S. Silva, Susana M. Cardoso   +3 more
openaire   +1 more source