Thermal analysis of mixtures of wheat flour and potato starches.

Sarker, Md. Zaidul Islam and Yamauchi, Hiroaki and Matsuura Endo, Chie and Takigawa, Shigenobu and Noda, Takahiro (2008) Thermal analysis of mixtures of wheat flour and potato starches. Food Hydrocolloids, 22 (4). pp. 499-504. ISSN 0268-005X

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Abstract

Potato starches with various contents of amylose from the Eniwa, Benimaru, and Norin No. 1 cultivars were blended with wheat flour at 10 to 50% potato starch (on a weight basis), and differential scanning calorimetry (DSC) studies were then conducted to determine if there were any traces of starch at 30% wt suspension. The amylose content of Eniwa potato starch was higher than those of the Benimaru and Norin No. 1 potato starches. Eniwa potato starch also exhibited significantly higher DSC traces than the Benimaru and Norin No. 1 potato starches. The DSC traces of the gelatinization peak temperature (TP) of the Eniwa potato starch–wheat flour mixture remained almost identical up to 30% and then showed a tendency to decrease from 40% potato starch in the mixtures due to significant dilution of wheat flour by potato starches at 40 and 50%. However, the TP values of the Eniwa potato starch–wheat flour mixture were significantly higher than those of the Benimaru potato starch–wheat flour and Norin No. 1 potato starch–wheat flour mixtures, and exhibited a trailing shoulder up to 40% Eniwa potato starch. On the other hand, no trailing shoulder was evident at 50% Eniwa potato starch in the mixture or in the Benimaru and Norin No. 1 potato starch–wheat flour mixtures. Such phenomena occurred due to the smaller differences in the TP of the control wheat flour, Benimaru and Norin No. 1 potato starches. The TP of the mixtures was slightly higher than that of the control samples due to the influences of the wheat gluten in the mixtures.

Item Type:Article
Keyword:Wheat flour; Potato starch; Mixture; Gelatinization characteristics
Subject:Starch
Subject:Starch - Studies
Faculty or Institute:Faculty of Food Science and Technology
Publisher:Elsevier
DOI Number:10.1016/j.foodhyd.2007.01.003
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.foodhyd.2007.01.003
ID Code:17377
Deposited By: Khairil Ridzuan Khahirullah
Deposited On:04 Jan 2012 06:52
Last Modified:22 Sep 2014 14:16

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