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High-field NMR spectroscopy of cystocarpic and tetrasporic carrageenans from Iridaea undulosa



High-field NMR spectroscopy of cystocarpic and tetrasporic carrageenans from Iridaea undulosa



Carbohydrate Research 261(2): 317-326



High-field 1H and 13C NMR spectroscopy has been used to characterize the fine structure of the cystocarpic and tetrasporic carrageenans from Iridaea undulosa. The proportion of different carrageenans from the kappa-family in cystocarpic samples were calculated. In the 13C NMR spectra of the tetrasporic samples, twelve signals of approximately equal intensity were observed, indicating a nearly "perfect" lambda-structure.

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Accession: 008774076

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DOI: 10.1016/0008-6215(94)84027-x


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