Abstract:
:This study investigated the effects of sodium hypochlorite oxidation and a heat-moisture treatment of potato starch on the physicochemical, pasting and textural properties of potato starches in addition to the water vapour permeability (WVP) and mechanical properties of potato starch films produced from these starches. The carbonyl contents, carboxyl contents, swelling power, solubility, pasting properties and gel texture of the native, oxidised and heat-moisture treated (HMT) starches were evaluated. The films made of native, oxidised and HMT starches were characterised by thickness, water solubility, colour, opacity, mechanical properties and WVP. The oxidised and HMT starches had lower viscosity and swelling power compared to the native starch. The films produced from oxidised potato starch had decreased solubility, elongation and WVP values in addition to increased tensile strength compared to the native starch films. The HMT starch increased the tensile strength and WVP of the starch films compared to the native starch.
journal_name
Food Chemjournal_title
Food chemistryauthors
Zavareze Eda R,Pinto VZ,Klein B,El Halal SL,Elias MC,Prentice-Hernández C,Dias ARdoi
10.1016/j.foodchem.2011.10.090subject
Has Abstractpub_date
2012-05-01 00:00:00pages
344-50issue
1eissn
0308-8146issn
1873-7072pii
S0308-8146(11)01561-5journal_volume
132pub_type
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