A physico-chemical study on the polysaccharide ulvan from hot water extraction of the macroalga Ulva |
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Authors: | Gaio Paradossi Francesca Cavalieri Laura Pizzoferrato Alfonso M. Liquori |
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Affiliation: | a Universitá di Roma ‘Tor Vergata’, Via della Ricerca Scientifica 00133 Rome, Italy;b INFM, Sezione Roma 1, Rome, Italy;c Istituto Nazionale della Nutrizione, via Ardeatina 546, 00178 Rome, Italy |
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Abstract: | Results of a study on the solution behaviour of the cell-wall polysaccharide named ulvan obtained from hot water extraction of a flour of Ulva ‘rigida’ are reported. In particular the spectroscopic properties and ion binding capacity of this charged polysaccharide were studied by circular dichroism and isothermal microcalorimetric titrations in order to gain information on the potential exploitation of this low cost biomass. A marked tendency of this polysaccharide to uptake water was evidenced by studying the proton spin-lattice relaxation times of the solvent, T1, embedded in this highly charged polysaccharide. |
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Keywords: | Ulvan Circular dichroism Binding |
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