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Hesse‐Ertelt, Stephanie; Witter, Raiker; Ulrich, Anne S.; Kondo, Tetsuo; Heinze, Thomas

Spectral assignments and anisotropy data of cellulose Iα: 13C‐NMR chemical shift data of cellulose Iα determined by INADEQUATE and RAI techniques applied to uniformly 13C‐labeled bacterial celluloses of different Gluconacetobacter xylinus strains

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  • Media type: E-Article
  • Title: Spectral assignments and anisotropy data of cellulose Iα: 13C‐NMR chemical shift data of cellulose Iα determined by INADEQUATE and RAI techniques applied to uniformly 13C‐labeled bacterial celluloses of different Gluconacetobacter xylinus strains
  • Contributor: Hesse‐Ertelt, Stephanie; Witter, Raiker; Ulrich, Anne S.; Kondo, Tetsuo; Heinze, Thomas
  • imprint: Wiley, 2008
  • Published in: Magnetic Resonance in Chemistry
  • Language: English
  • DOI: 10.1002/mrc.2311
  • ISSN: 0749-1581; 1097-458X
  • Keywords: General Materials Science ; General Chemistry
  • Origination:
  • Footnote:
  • Description: <jats:title>Abstract</jats:title><jats:p>Solid‐state <jats:sup>13</jats:sup>C‐NMR spectroscopy was used to characterize native cellulose pellicles from two strains of <jats:bold><jats:italic>Gluconacetobacter xylinus</jats:italic></jats:bold> (ATCC 53582, ATCC 23769), which had been statically cultivated in Hestrin–Schramm (HS) medium containing fully <jats:sup>13</jats:sup>C‐labeled β‐<jats:sc>D</jats:sc>‐glucose‐U‐<jats:sup>13</jats:sup>C<jats:sub>6</jats:sub> as the sole source of carbon. For both samples, the <jats:sup>13</jats:sup>C‐NMR chemical shifts were completely assigned for each <jats:sup>13</jats:sup>C‐labeled site of cellulose <jats:italic>I</jats:italic><jats:sub>α</jats:sub> with the aid of 2D refocused INADEQUATE NMR. To determine the principal chemical shift tensor components, a pulse sequence based on the recoupling of anisotropy information (RAI) was applied at 10 kHz MAS. The detailed <jats:sup>13</jats:sup>C tensors of cellulose <jats:italic>I</jats:italic><jats:sub>α</jats:sub> from different bacterial celluloses are thus available now for the first time, and these results have been compared with previously published data of nonenriched material and with theoretical predictions. Copyright © 2008 John Wiley &amp; Sons, Ltd.</jats:p>