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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Taccardi, Nicola |
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Petrov, R. H. | Madrid |
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Casati, R. |
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Kočí, Jan | Prague |
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Ali, M. A. |
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Rančić, M. |
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Azevedo, Nuno Monteiro |
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article
A Fourier transform infrared spectroscopy study of wine polysaccharides
Abstract
Fifteen polysaccharides previously purified from a red wine and whose structures had been characterised were studied by Fourier transform-infrared spectroscopy (FTIR). These polysaccharides are representative of the main families of polysaccharides found in wines: mannoproteins, arabinogalactan-proteins, RG-I and RG-II. The spectra were processed at between 950 and 1850 cm(-1). Significant differences were found between the polysaccharide families. The spectra are explained with reference to glycosyl residues, proteic and galacturonic acid compositions