Computing and Library Services - delivering an inspiring information environment

A study of starch gelatinisation behaviour in hydrothermally-processed plant food tissues and implications for in vitro digestibility

Edwards, Cathrina H., Warren, Frederick J., Campbell, Grant M., Gaisford, Simon, Royall, Paul G., Butterworth, Peter J. and Ellis, Peter R. (2015) A study of starch gelatinisation behaviour in hydrothermally-processed plant food tissues and implications for in vitro digestibility. Food and Function (12). pp. 3634-3641. ISSN 2042-6496

Available under License Creative Commons Attribution.

Download (3MB) | Preview


The aim of this study was to investigate the role of the plant food matrix in influencing the extent of starch gelatinisation during hydrothermal processing, and its implications for starch digestibility. Differential scanning calorimetry (DSC) was used to provide a detailed examination of the gelatinisation behaviour
of five distinct size fractions (diameters <0.21 to 2.58 mm) of milled chickpea and durum wheat. Gelatinisation parameters were obtained from the DSC thermograms and concomitant microscopy analyses were performed. The estimated terminal extent of gelatinisation (TEG) was compared with our previously published
data for in vitro starch digestibility of the same food materials. We observed clear differences in the gelatinisation behaviour of matched size-fractions of chickpeas and durum wheat. In chickpea materials, the TEG values (34–100%) were inversely related to particle size, whereas in durum wheat, no sizedependent
limitations on TEG were observed. The TEG values were completely consistent with the extent of starch amylolysis in all size fractions of both durum wheat and chickpea. Microstructural analysis following
hydrothermal processing confirmed the presence of some partially gelatinised birefringent starch within intact chickpea cells. Birefringent starch granules were not present in any of the processed fractions of durum wheat. The differences in gelatinisation behaviour of these plant species seem to reflect
the individual cell wall properties of these materials. These findings demonstrate the applicability of DSC to real food materials to provide insight into the mechanisms by which the food matrix (particularly the plant cell walls) influences gelatinisation, and consequently, starch amylolysis.

Item Type: Article
Subjects: Q Science > QP Physiology
Schools: School of Applied Sciences
Related URLs:
Depositing User: Grant Campbell
Date Deposited: 15 Oct 2015 09:26
Last Modified: 21 Apr 2016 05:49


Downloads per month over past year

Repository Staff Only: item control page

View Item View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©