title: A physico-chemical study on the polysaccharide ulvan from hot water extraction of the macroalga Ulva.
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.
authors.affiliation: Universitá di Roma Tor Vergata, Rome, Italy. paradossi@uniroma2.it
authors.forename: G
authors.initials: G
authors.lastname: Paradossi
authors.forename: F
authors.initials: F
authors.lastname: Cavalieri
authors.forename: L
authors.initials: L
authors.lastname: Pizzoferrato
authors.forename: A M
authors.initials: AM
authors.lastname: Liquori
mesh_terms: D002151:Calorimetry / Q000379:methods; D002240:Carbohydrate Sequence; D002473:Cell Wall / Q000737:chemistry; D002627:Chemistry, Physical / Q000379:methods; D000460:Chlorophyta / Q000737:chemistry*; D002942:Circular Dichroism; D003300:Copper / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D016018:Least-Squares Analysis; D008969:Molecular Sequence Data; D011134:Polysaccharides / Q000737:chemistry* / Q000378:metabolism; D011135:Polysaccharides, Bacterial / Q000737:chemistry; D011522:Protons; D013696:Temperature; D017186:Titrimetry; D014867:Water
chemical_list: D011134:Polysaccharides; D011135:Polysaccharides, Bacterial; D011522:Protons; D014867:Water; C048288:gellan gum; D003300:Copper