title: Room temperature, low-field 13C-n.m.r. spectra of degraded kappa/iota carrageenans.
abstract: Using samples previously degraded by autohydrolysis, it is possible to obtain valuable low-field 13C-n.m.r. spectra of samples of kappa/iota carrageenans at room temperature. Spectroscopy of samples extracted at different stages of autohydrolysis helps to determine the mechanism of the reaction and the presence of low proportion kinks and other irregularities in the molecules.
authors.affiliation: Departamento de Quimica Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
authors.forename: C A
authors.initials: CA
authors.lastname: Stortz
authors.forename: A S
authors.initials: AS
authors.lastname: Cerezo
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002351:Carrageenan / Q000737:chemistry*; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D013696:Temperature
chemical_list: D002351:Carrageenan