International Journal of Biological Macromolecules, ( ISI ), Volume (91), No (2), Year (2016-7) , Pages (730-735)

Title : ( Physical properties of pregelatinized and granular cold water swellingmaize starches at different pH values )

Authors: Sara Hedayati , Fakhri Shahidi , Arash Koocheki , Asgar Farahnaky , Mahsa Majzoobi ,

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The aim of this study was to investigate the influence of pH changes (3, 5, 7 and 9) on physical propertiesof pregelatinized (PG) and granular cold water swelling (GCWS) maize starches. In acidic pH, PG starcheswere fragmented; however, GCWS starches mainly reserved their granular integrity but were shriveled.For both modified starches the water absorption, cold water viscosity, textural parameters, turbidity andfreeze-thaw stability of the samples decreased whereas water solubility increased at pH 3 and 5. On theother hand, alkaline pH did not bring about evident changes on morphology of PG starch but the surfaceof GCWS starch became smoother. Water absorption, solubility, rheological and mechanical properties,freeze-thaw stability and turbidity of the starch pastes increased at high pH values. Overall, both starcheswere more stable at alkaline pH compared to acidic pH values and GCWS starch was more resistance topH changes than PG starch.

Keywords

, Maize starch, Pregelatinized starch, Granular cold water swelling starch, pH, Physical
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@article{paperid:1056884,
author = {Hedayati, Sara and Shahidi, Fakhri and Koocheki, Arash and Asgar Farahnaky and Mahsa Majzoobi},
title = {Physical properties of pregelatinized and granular cold water swellingmaize starches at different pH values},
journal = {International Journal of Biological Macromolecules},
year = {2016},
volume = {91},
number = {2},
month = {July},
issn = {0141-8130},
pages = {730--735},
numpages = {5},
keywords = {Maize starch; Pregelatinized starch; Granular cold water swelling starch; pH; Physical properties},
}

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%0 Journal Article
%T Physical properties of pregelatinized and granular cold water swellingmaize starches at different pH values
%A Hedayati, Sara
%A Shahidi, Fakhri
%A Koocheki, Arash
%A Asgar Farahnaky
%A Mahsa Majzoobi
%J International Journal of Biological Macromolecules
%@ 0141-8130
%D 2016

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