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Is Ascophyllum nodosum Lichenized ?
Botanica Marina, 1972In a recent synopsis on Ascophyllum nodosum (L.) LE JOLIS, BAARDSETH (1970) accumulates all Information available on this common brown alga. This author rnentions briefly the presence o£ fungal hyphae that are never absent from any part o£ Ascophyllum and expresses bis uncertainty about the question if these hyphae belong t o the Asconnycete, described
JAN KOHLMEYER, ERIKA KOHLMEYER
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A fucoidan fraction from Ascophyllum nodosum
Carbohydrate Research, 2001A fucoidan fraction was purified from the brown alga Ascophyllum nodosum. The polysaccharide contained L-fucose and sulfate as the only constituents. Combination of methylation analysis, Smith degradation, FTIR and NMR spectroscopy on the native and the de-sulfated polymers demonstrated that the fucoidan consisted of a highly branched core region with ...
Marais, M.F., Joseleau, J.P.
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Biological degradation of Ascophyllum nodosum
Journal of Applied Phycology, 1997The alginate forms the major structural component of the cell wall and the intercellular matrix of the brown alga Ascophyllum nodosum. Successful biological degradation of A. nodosum would largely depend on the dissolution of the alginate, but reactive compounds in the alga such as polyphenols may also have toxic effects on the microbial population ...
Einar Moen +2 more
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Sterols in Ascophyllum nodosum
Phytochemistry, 1970Abstract In stored, milled, dried Ascophyllum nodosum, saringosterol, 24-ketocholesterol, fucosterol, 24-methylenecholesterol, 24-methyl-Δ5,22-cholestadien-3β-ol, cholesterol and a trace of 24-ethylcholesterol were detected in the sterol fraction. Whereas, from freshly harvested and dried A.
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Identification of abscisic acid in the seaweed Ascophyllum nodosum
Phytochemistry, 1988Abstract Abscisic acid (ABA) has been isolated from commercial preparations and freeze-dried samples of the brown algae Ascophyllum nodosum . Purification by established methods yielded 0.03–0.15 μg ABA/g dry weight in lyophilize powders and 0.10–0.46 μg ABA/g dry wt in a commercial extract.
Gregory L. Boyer, Susan S. Dougherty
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Nature, 1958
IN the previous communication, we reported the presence of reducing compounds in Ascophyllum nodosum. It was observed that the amounts of these reducing compounds varied in samples collected at different habitats. Plants growing outside or in the outer parts of the Trondheimsfjord, collected in July, showed a reducing power of approximately 2.2 m.equiv.
ARNE HAUG, BJØRN LARSEN
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IN the previous communication, we reported the presence of reducing compounds in Ascophyllum nodosum. It was observed that the amounts of these reducing compounds varied in samples collected at different habitats. Plants growing outside or in the outer parts of the Trondheimsfjord, collected in July, showed a reducing power of approximately 2.2 m.equiv.
ARNE HAUG, BJØRN LARSEN
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Some structural aspects of vanadium bromoperoxidase from Ascophyllum nodosum
Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1990The stability of the vanadium containing bromoperoxidase from Ascophyllum nodosum was studied. The enzyme was very resistant against chemical denaturation. Denaturation did not occur upon incubation in 4 M guanidine hydrochloride. Circular dichroism measurements showed that the secondary structure was not affected upon incubation in 4% sodium dodecyl ...
M G, Tromp +3 more
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The Sperm Attractant of the Marine Brown Alga Ascophyllum nodosum (Phaeophyceae)
Science, 1982Spermatozoids of the intertidal seaweed Ascophyllum nodosum (Fucales, Phaeophyceae) are attracted to eggs prior to fertilization. The attractant has been isolated and its structure identified as 1(3 E ,5 Z ,8 Z )-undecatetraene (finavarrene ...
Müller, D. +4 more
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Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1986
Abstract Reconstitution experiments showed that the transition metal vanadium is essential for enzymic activity of bromoperoxidase from the marine brown alga Ascophyllum nodosum. A linear relationship existed between brominating activity and the amount of vanadium incorporated in the enzyme.
de Boer, E. +4 more
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Abstract Reconstitution experiments showed that the transition metal vanadium is essential for enzymic activity of bromoperoxidase from the marine brown alga Ascophyllum nodosum. A linear relationship existed between brominating activity and the amount of vanadium incorporated in the enzyme.
de Boer, E. +4 more
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Bromoperoxidase activity and vanadium level of the brown alga Ascophyllum nodosum
Phytochemistry, 2008Vanadium-dependent peroxidase activity in extracts of Ascophyllum nodosum growing in the intertidal region close to Roscoff/France, and algal vanadium levels, followed approximately similar seasonal variation, as deduced from a study lasting from April 2005 to March 2006. High peroxidase (PO) activity was found in extracts obtained from algae collected
Jens, Hartung +5 more
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