Results 121 to 130 of about 520 (156)
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NMR analysis of the chemical structure of ulvan and of ulvan-boron complex formation
Carbohydrate Polymers, 1998The NMR spectroscopic analysis of autohydrolysate fragments obtained from the gel-forming water-soluble cell-wall sulphated polysaccharides from the green seaweedUlva sp. allowed the identification of two major repeating units in ulvan. These were the aldobiouronic acids → 4)-β-DGlcpA-(1 → 4)-α-L-Rhap 3-sulphate and → 4)-α-L-IdopA-(l → 4)-α-L-Rhap 3 ...
Lahaye, Marc +2 more
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A Conformational Study on the Algal Polysaccharide Ulvan
Macromolecules, 2002The conformational behavior of the algal polysaccharide ulvan in aqueous solution has been studied. This biopolymer, containing limited regular regions of aldobiuronic sequences made of β-d-glcpA(1→4)-α-l-rhap 3-sulfate and of α-l-idopA(1→4)-α-l-rhap 3-sulfate, can be considered as a low-cost source of rare sugars with a potential impact on several ...
PARADOSSI, GAIO +2 more
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Multifaceted applications of ulvan polysaccharides: Insights on biopharmaceutical avenues
International Journal of Biological Macromolecules, 2023Ulvans are water-soluble sulfated polysaccharides predominantly found in the cell wall of green algae. They hold unique characteristics that are attributed to their 3D conformation, functional groups along with the presence of saccharides and sulfate ions.
Saurabh, Shah +8 more
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Algal Research, 2021
Abstract Ulvan, extracted from the marine green algae belonging to the genus Ulva, is mainly composed of four monosaccharides consisting of rhamnose, xylose, glucuronic acid and iduronic acid. It has great potential in the fields of food, pharmaceuticals and chemistry.
Tiancheng Tang +3 more
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Abstract Ulvan, extracted from the marine green algae belonging to the genus Ulva, is mainly composed of four monosaccharides consisting of rhamnose, xylose, glucuronic acid and iduronic acid. It has great potential in the fields of food, pharmaceuticals and chemistry.
Tiancheng Tang +3 more
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Creation of the Ulvan Lyase Enzyme Complex for the Production of Ulvan-Derived Oligosaccharides
Journal of Agricultural and Food ChemistryUlvan, a primary constituent of green algae biomass, has the potential to be used for various biomedical and biotechnology applications. Its biological activity is significantly influenced by its molecular weight. However, the high molecular weight of ulvan poses challenges due to its high viscosity and poor solubility, necessitating an efficient ...
YeWon Jo +5 more
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International Journal of Pharmaceutics, 2012
The polysaccharide ulvan, composed of sulphated rhamnose, glucoronic and iduronic acids was used to produce polymeric membranes by solvent casting. As ulvan is soluble in water, a cross-linking step was necessary to render the membrane insoluble in water and stable at physiological conditions.
Alves, A. +4 more
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The polysaccharide ulvan, composed of sulphated rhamnose, glucoronic and iduronic acids was used to produce polymeric membranes by solvent casting. As ulvan is soluble in water, a cross-linking step was necessary to render the membrane insoluble in water and stable at physiological conditions.
Alves, A. +4 more
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Ultrastructure of ulvan: A polysaccharide from green seaweeds
Biopolymers, 2009AbstractUltrastructural analysis of the gel forming green seaweed sulfated polysaccharide ulvan revealed a spherical‐based morphology (10–18 nm diameter) more or less aggregated in aqueous solution. At pH 13 in TBAOH (tetrabutyl ammonium hydroxyde) or NaOH, ulvan formed an open gel‐like structure or a continuous film by fusion or coalescence of bead ...
Robic, Audrey +4 more
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Antioxidant activity of purified ulvan in hyperlipidemic mice
International Journal of Biological Macromolecules, 2018Several studies have reported that ulvan from the alga Ulva pertusa (Chlorophyta) exhibits substantial antioxidant and antihyperlipidemic activities; however, which group of heteropolysaccharides play roles in these activities remains unknown. In this study, three purified ulvan (PU1, PU2 and PU3) have been obtained by DEAE-Sepharose fast-flow column ...
Weida, Li +9 more
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Biofunctionalization of Ulvan Scaffolds for Bone Tissue Engineering
ACS Applied Materials & Interfaces, 2014Photo-cross-linked ulvan scaffolds were designed with the aim to induce and support enzyme mediated formation of apatite minerals, in the absence of osteogenic growth factors. Scaffold formation with a desired geometry was investigated using chemically modified ulvan bearing radically polymerizable groups.
Mamoni, Dash +6 more
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Perspectives on Biomedical Applications of Ulvan
2017Ulvan, a sulfated polysaccharide extracted from green algae belonging to Ulva species, has been shown to display a wide range of biological properties that significantly contribute to the beneficial health effects obtained by algal food consumption. The present book chapter aims to provide an overview of the more recently adopted strategies for the ...
Morelli, Andrea +2 more
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