Results 171 to 180 of about 1,886 (192)
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Mobility of Sulfate Ester during Structural Determinations of Red Algal Galactans
Botanica Marina, 2002The polysaccharide from Rhodophyllis membranacea (family Cystocloniaceae) was found to be approximately 80% L-carrageenan together with 20 % of a further precursor-like entity. Alkali treatment of the initial polymer gaveonly ι-carrageenan. A standard methylation of this polysaccharide in NaOH/DMSO gave 95 % of the product as permethylated β ...
I. J. Miller, J. W. Blunt
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International Journal of Biological Macromolecules, 2001
An anticoagulant was isolated from a marine green alga, Codium cylindricum. The anticoagulant was composed mainly of galactose with a small amount of glucose, and was highly sulfated (13.1% as SO3Na). The anticoagulant properties of the purified anticoagulant were compared with that of heparin by assays of activated partial thromboplastin time (APTT ...
K, Matsubara +5 more
exaly +3 more sources
An anticoagulant was isolated from a marine green alga, Codium cylindricum. The anticoagulant was composed mainly of galactose with a small amount of glucose, and was highly sulfated (13.1% as SO3Na). The anticoagulant properties of the purified anticoagulant were compared with that of heparin by assays of activated partial thromboplastin time (APTT ...
K, Matsubara +5 more
exaly +3 more sources
Effect of Sulfated Galactan from Hypnea japonica on Bone Metabolism in Rat
Canadian Journal of Physiology and Pharmacology, 1972Sulfated polysaccharide from Hypnea japonica and 45Ca was administered into growing rat by intubation or intravenous injection. 45Ca uptake and changes in the phospholipid, collagen, and mucopolysaccharide contents of the metaphyseal and diaphyseal bone were determined.
K C, Hong, R L, Cruess, S C, Skoryna
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Carbohydrate Research, 1996
Polysaccharides from the red alga Phacelocarpus peperocarpos were extracted with hot water, clarified, and precipitated with 2-propanol. The native preparation was highly sulfated (36.2% w/w). Alkali modification decreased the sulfate content by 2.0% w/w. The alkali-modified polysaccharide is composed mostly of galactose (Gal.
Liao, ML +5 more
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Polysaccharides from the red alga Phacelocarpus peperocarpos were extracted with hot water, clarified, and precipitated with 2-propanol. The native preparation was highly sulfated (36.2% w/w). Alkali modification decreased the sulfate content by 2.0% w/w. The alkali-modified polysaccharide is composed mostly of galactose (Gal.
Liao, ML +5 more
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The Immunologic Response of Rabbits to Carrageenans, Sulfated Galactans Extracted from Marine Algae
The Journal of Immunology, 1968Summary Both κ and λ carrageenans, sulfated galactans, elicit formation of precipitating antibodies in rabbits. The carrageenan-anti-carrageenan system follows the kinetics of other well-known antipolysaccharide systems. Both λ and κ carrageenan show a high degree of immunologic specificity; namely, no reaction was observed between ...
K H, Johnston, E L, McCandless
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Semi-synthesis of a 3-O-sulfated red seaweed galactan-derived disaccharide alditol
Carbohydrate Research, 2006Beta-D-Galp3-SO3-(1-->4)-3,6-anhydro-L-GalOH (agarobiitol 3(2)-sulfate, 4) was semi-synthetically prepared as follows: production of agarobiitol (1) from agarose by partial reductive hydrolysis, protection of the primary hydroxyl groups of 1 with trityl groups to produce the 1(1),6(2)-di-O-tritylated derivative (2), regioselective dibutylstannylene ...
Alan G, Gonçalves +3 more
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Carbohydrate Polymers, 2014
The anti-HMPV (human metapneumovirus) activity was determined for sulfated dl-hybrid galactans obtained from the red seaweed Cryptonemia seminervis and their depolymerized products obtained by reductive partial hydrolysis. Structural studies carried out in three homogeneous depolymerized fractions DS-1, DS-2e and DS-3 (Mw of 51.6-63.8 kDa) showed that ...
Gabriella S, Mendes +8 more
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The anti-HMPV (human metapneumovirus) activity was determined for sulfated dl-hybrid galactans obtained from the red seaweed Cryptonemia seminervis and their depolymerized products obtained by reductive partial hydrolysis. Structural studies carried out in three homogeneous depolymerized fractions DS-1, DS-2e and DS-3 (Mw of 51.6-63.8 kDa) showed that ...
Gabriella S, Mendes +8 more
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Carbohydrate Research, 2004
A desulfation method using chlorotrimethylsilane for treatment of pyridinium salts of sulfated galactans was developed. It proved to be appropriate for desulfation of polysaccharides of both agar and carrageenan families. In order to evaluate its efficiency in presence of the maximum content of 3,6-anhydrogalactose, it was applied to commercial kappa ...
Adriana A, Kolender +1 more
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A desulfation method using chlorotrimethylsilane for treatment of pyridinium salts of sulfated galactans was developed. It proved to be appropriate for desulfation of polysaccharides of both agar and carrageenan families. In order to evaluate its efficiency in presence of the maximum content of 3,6-anhydrogalactose, it was applied to commercial kappa ...
Adriana A, Kolender +1 more
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Galactan sulfate from the test of tunicates
Carbohydrate Research, 1978Noriko Toda +3 more
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Low-Molecular-Weight Galactan Sulfates as Angiogenesis Inhibitors
1999D. H. Paper, H. Vogl, G. Franz
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