Annual Growth Cycle of the Brown Alga Ecklonia kurome(Laminariaceae; Phaeophyta) off Mugi Coast of Tokushima Prefecture, Japan.
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Bactericidal activity of phlorotannins from the brown alga Ecklonia kurome.
The bactericidal activity of phlorotannins from brown algae against food-borne pathogenic bacteria (25 strains), methicillin-resistant Staphylococcus aureus (MRSA) (nine strains) and Streptococcus pyogenes (one strain) was examined and compared with that of catechins. In addition, the effect of the oral administration of phlorotannins on mice was investigated. Phlorotannins, which are oligomers...
متن کاملA new phlorotannin from the brown alga Ecklonia stolonifera.
A new phlorotannin, named eckstolonol (1), was isolated from the EtOAc soluble fraction of the methanolic extract of the brown alga, Ecklonia stolonifera OKAMURA, along with three known phlorotannins, eckol (2), phlorofucofuroeckol A (3), and dieckol (4). The structure of eckstolonol was identified as 5,8,13,14-tetraoxa-pentaphene-1,3,6,9,11-pentaol on the basis of spectroscopic evidence. The n...
متن کاملInhibition of HIV-1 reverse transcriptase and protease by phlorotannins from the brown alga Ecklonia cava.
The bioassay-directed isolation of a marine brown alga, Ecklonia cava, afforded four phlorotannin derivatives, eckol (1), 8,8'-bieckol (2), 8,4"'-dieckol (3), and phlorofucofuroeckol A (4). Among these compounds, 2 and 3 exhibited an inhibitory effect on human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) and protease. Specifically, they inhibited the RT more potently than th...
متن کاملAntiproliferative and antioxidant properties of an enzymatic hydrolysate from brown alga, Ecklonia cava.
The potential antiproliferative and antiradical activities of an enzymatic extract of Ecklonia cava together with its crude polysaccharide (CpoF) and crude polyphenolic fractions (CphF) were evaluated in vitro. Tested extracts showed strong selective cell proliferation inhibition on all cancer cell lines tested, especially CphF extract, containing high polyphenol amount, showed 5.1 microg/ml of...
متن کاملVirus - like particles associated with dieback symptoms in the brown alga Ecklonia radiata
Since 1991 epidemic dieback of the kelp Ecklonia radiata has been observed at the Leigh h4arine Reserve and other sites in northern New Zealand. As the dominant phaeophycean E. radiata is a very important component of the eastern coastal ecosystem, providing both food and refuge for many species. Examination of the E. radiata sap extracts by electron microscopy detected the presence of both str...
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 1994
ISSN: 1349-998X,0021-5392
DOI: 10.2331/suisan.60.365