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Cited by 719

The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.

A novel approach for calculating starch crystallinity and its correlation with double helix content: A combined XRD and NMR study

Lopez‐Rubio, Amparo, Flanagan, Bernadine M., Gilbert, Elliot P., Gidley, Michael J.·2008·Biopolymers
DOI 10.1002/bip.21005
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Abstract

A peak fitting procedure has been implemented for calculating crystallinity in granular starches. This methodology, widely used for synthetic polymers, is proposed to better reflect the crystalline content of starches than the method normally used, in which it is assumed that relatively perfect crystalline domains are interspersed with amorphous regions. The new approach takes into account irregularities in crystals that are expected to exist in semicrystalline materials. Therefore, instead of assuming that the amorphous background extends up to the base of diffraction peaks, the whole X‐ray diffraction (XRD) profile is fitted to an amorphous halo and several discrete crystalline diffraction peaks. The crystallinity values obtained from the XRD patterns of a wide range of native starches using this fitting technique are very similar to the double helix contents as measured by 13 C solid state NMR, suggesting that double helices in granular starches are present within irregular crystals. This contrasts with previous descriptions of crystalline and noncrystalline double helices that were based on the analysis of XRD profiles as perfect crystals interspersed in a noncrystalline background. Furthermore, with this fitting methodology it is possible to calculate the contribution from the different crystal polymorphs of starch to the total crystallinity. © 2008 Wiley Periodicals, Inc. Biopolymers 89: 761–768, 2008. This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com

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Metadata

Authors
Lopez‐Rubio, A., Flanagan, B. M., Gilbert, E. P., & Gidley, M. J.
Venue
Biopolymers
Publisher
Wiley
Published
2008-04-21
Volume
89
Issue
9
Pages
761-768
ISSN
  • 0006-3525 (ISSN-L)
  • 1097-0282
DOI
10.1002/bip.21005
OpenAlex
W2077938270
Cited by
719
References
32
FWCI
14.25
Type
journal article
Language
en
Open access
closed

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