Modification of pasting properties of wheat starch by cyclodextrin glycosyltransferase

Hardeep Singh Gujral; Cristina M Rosell

doi:10.1002/jsfa.1861

journal article Aug 04, 2004

Modification of pasting properties of wheat starch by cyclodextrin glycosyltransferase

Hardeep Singh Gujral Cristina M Rosell

Journal of the Science of Food and Agriculture Vol. 84 No. 13 pp. 1685-1690 · Wiley

View at Publisher Save 10.1002/jsfa.1861

Abstract

AbstractThe effect of cyclodextrin glycosyltransferase (CGTase) on wheat starch functionality was assessed by determining the pasting properties and the dynamic rheology. The addition of CGTase lowered the peak and final viscosity, increased breakdown and markedly decreased the total setback. The influence of CGTase on the ability of starch to form complex with lipids was explored in the presence of fatty acids (stearic and lauric) and an emulsifier (diacetyl tartaric acid ester of monoglyceride, DATEM). Further information about the effect of CGTase on the pasting properties of wheat starch was obtained by analysing the first derivative of the viscograph curves. The cyclodextrins formed in the starch as a result of the cyclization activity of the CGTase were quantified and it was observed that α‐cyclodextrin occurred in the highest concentration followed by β‐ and γ‐cyclodextrins. The starch obtained with CGTase after pasting exhibited better emulsifying properties as it contained the cyclodextrins. The CGTase treatment also modified the dynamic rheology of the starch slurry leading to a decrease in the elastic and viscous modulus. Copyright © 2004 Society of Chemical Industry

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Details

Published: Aug 04, 2004
Vol/Issue: 84(13)
Pages: 1685-1690
License: View

Authors

Cite This Article

Hardeep Singh Gujral, Cristina M Rosell (2004). Modification of pasting properties of wheat starch by cyclodextrin glycosyltransferase. Journal of the Science of Food and Agriculture, 84(13), 1685-1690. https://doi.org/10.1002/jsfa.1861

Modification of pasting properties of wheat starch by cyclodextrin glycosyltransferase

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