Results 171 to 180 of about 2,593 (203)

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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The New Products from Brown Seaweeds: Fucoxanthin and Phlorotannins

2022
The 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, Zhang, Jinrong, He, Shan, Cui, Wei, Gao, Fengzheng   +4 more
openaire   +2 more sources

Extraction and Purification of Phlorotannins from Brown Algae

2015
The 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, Lelchat, Florian, Hupel, Mélanie, Jégou, Camille, Stiger-Pouvreau, Valérie   +4 more
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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
openaire   +2 more sources

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
openaire   +1 more source

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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Medicinal Effects of Phlorotannins from Marine Brown Algae

2011
Brown seaweeds are popular and abundant food in East Asia and also well known for their medicinal effects due to presence of active phenolic constituents. Phlorotannins, the major phenolic group of brown algae, have extensively investigated for their vast array of bioactivities such as antioxidant, anti-inflammatory, anticancer, and antidiabetic.
Kim, Se-Kwon, Himaya, S. W. A.
openaire   +5 more sources