Figure 3From: Impact of the supramolecular structure of cellulose on the efficiency of enzymatic hydrolysis A representative CP/MAS 13 C-NMR spectrum from cellulose, together with a typical spectral fitting result. A CP/MAS 13C-NMR spectrum of cotton. B Enlargement of the C4 region of cotton cellulose. To determine the supramolecular structure of cellulose, the C4 region is fitted with a set of mathematical functions representing the signals originating from C4 carbons in cellulose Iα, cellulose I(α + β), cellulose Iβ, para-crystalline cellulose, C4 carbons in polymers residing at inaccessible fibril surfaces and C4 carbons in polymers residing at accessible fibril surfaces [27,31,32].Back to article page