Results 161 to 170 of about 1,886 (192)

Bimetallic nanoparticles with sulfated galactan eliminate Vibrio parahaemolyticus in shrimp Penaeus vannamei

Fish and Shellfish Immunology
Bimetallic (Au/Ag) nanoparticles (BNPs) have shown enhanced antibacterial activity compared to their monometallic counterparts. Sulfated galactans (SG) are a naturally occurring polymer commonly found in red seaweed Gracilaria fisheri. They are biocompatible and biodegradable and environmentally friendly.
Dr. Manoj Kamble, Chumporn Soowannayan, Tawut Rudtanatip   +2 more
exaly   +3 more sources

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The structure of a galactan sulfate from the red seaweed Bostrychia montagnei

Carbohydrate Research, 2002
The sulfated, methylated galactan isolated from the red seaweed Bostrychia montagnei, showed an unusually narrow structural dispersion. This agaran has the defining linear backbone of alternating 3-linked beta-D-galactopyranosyl units and 4-linked alpha-L-galactopyranosyl and 3,6-anhydrogalactopyranosyl residues.
Maria E R, Duarte, Miguel D, Noseda, Marco A, Cardoso, Siumara, Tulio, Alberto S, Cerezo   +4 more
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The galactan sulfate from the edible, red alga Porphyra columbina

Carbohydrate Research, 1981
Abstract A galactan sulfate has been isolated from the seaweed Porphyra columbina , and its structure established by a combination of methylation, methanolysis, treatment with alkali followed by methylation, and 13 C-n.m.r. spectroscopy. The polysaccharide belongs to the porphyran class, and consists of 3-linked β- d -galactosyl residues and 4 ...
Donald J. Brasch, Hi Mui Chang, Chaw T. Chuah, Laurence D. Melton   +3 more
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Simple separation of anticoagulant sulfated galactan from marine red algae

Journal of Applied Phycology, 2008
In this study, hot water extracts of 22 red algal species were evaluated for their potential anticoagulant activities. The extracts from eight species (Grateloupia elliptica, Sinkoraena lancifolia, Halymenia dilatata, Grateloupia lanceolata, Lomentaria catenata, Martensia denticulata, Schizymenia dubyi, Chondrus crispus) showed potent activated partial
Seung-Hong Lee, Yasantha Athukorala, Jung-Suck Lee, You-Jin Jeon   +3 more
openaire   +1 more source

Sulfated galactan is a catalyst of antithrombin-mediated inactivation of α-thrombin

Biochimica et Biophysica Acta (BBA) - General Subjects, 2008
Novel compounds presenting anticoagulant activity, such as sulfated polysaccharides, open new perspectives in medicine. Elucidation of the molecular mechanism behind this activity is desirable by itself, as well as because it allows for the design of novel compounds.
Fábio R, Melo, Mariana S, Pereira, Robson Q, Monteiro, Débora, Foguel, Paulo A S, Mourão   +4 more
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A 2-sulfated, 3-linked α-l-galactan is an anticoagulant polysaccharide

Carbohydrate Research, 2002
Marine alga is an abundant source of sulfated polysaccharides with potent anticoagulant activity. However, several attempts to identify the specific structural features in these compounds, which confer the biological activity, failed due to their complex, heterogeneous structure.
Mariana S, Pereira, Ana-Cristina E S, Vilela-Silva, Ana-Paula, Valente, Paulo A S, Mourão   +3 more
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Structural and functional insights into sulfated galactans: a systematic review

Glycoconjugate Journal, 2009
Sulfated galactans (SGs) are highly anionic marine galactose-composed homopolysaccharides. Although their structures vary among species, their main features are conserved among phyla. Green algal SGs are quite heterogeneous, although preponderantly composed of 3-beta-D-Galp units.
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Sulfated galactans from the red seaweed Nothogenia fastigiata (Nemaliales, Rhodophyta)

Hydrobiologia, 1990
Fractionation of the cetrimide salts of the sulfated polysaccharides of Nothogenia fastigiata led to the isolation of a complex galactan sulfate. This product showed compositional and molecular weight heterodispersion together with composition-, temperature-, time-, and conformation-dependent molecular associations.
Hernán H. Haines, María C. Matulewicz, Alberto S. Cerezo   +2 more
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Preparation of a sulfated linear (1→4)-β-d-galactan with variable degrees of sulfation

Carbohydrate Polymers, 2000
A linear 1,4-β-d-galactan has been prepared by partial acid hydrolysis of the major lupin seed polysaccharide on a preparative scale. The galactan has been characterized by acetylation and methylation analysis, by GPC, as well as by its 1H- and 13C-NMR-spectra. Sulfation with increasing amounts of SO3-pyridine yielded a series of galactan sulfates with
H Vogl, D.H Paper, G Franz
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Isolation, characterization and bioactive potential of sulfated galactans from Spyridia hypnoides (Bory) Papenfuss

International Journal of Biological Macromolecules, 2018
The sulfated galactans (SG) of mass 16 kDa was purified from S.hypnoides through anion exchange and gel permeation chromatography. The biochemical properties of SG including carbohydrate, 3,6 anhydrogalactose, sulfate, uronic acid, moisture, ash, carbon, hydrogen, nitrogen contents were estimated.
Sadhasivam, Sudharsan, Sadhasivam, Giji, Palaniappan, Seedevi, Shanmugam, Vairamani, Annaian, Shanmugam   +4 more
openaire   +2 more sources