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Comparison of starch films and effect of different rice starch‐based coating formulations on physical properties of walnut during storage time at accelerated temperature


Citation

Aghazadeh, Mona and Karim, Roselina and Sultan, Mohammad Tauseef and Paykary, Maryam and Johnson, Stuart K. and Shekarforoush, Elhamalsadat (2018) Comparison of starch films and effect of different rice starch‐based coating formulations on physical properties of walnut during storage time at accelerated temperature. Journal of Food Process Engineering, 41 (1). art. no. e12607. pp. 1-11. ISSN 0145-8876; ESSN: 1745-4530

Abstract / Synopsis

Effects of different rice starch‐based coating formulations on physical properties of walnut were studied during 20 days storage at accelerated temperature. Results from different starch films indicated there were nonsignificant differences in water and oxygen barrier properties of the starch films. However, significant (p ≤ .05) differences were present in the elongation at break characteristics between the corn and rice films. Tensile strength varied significantly between edible films made from rice starch with that of wheat and corn. Melting temperature (Tm) of wheat and corn starch films was higher than rice starch films (152.77 °C). Thus, rice starch in combination with different additives such as chitosan, emulsifier, and red palm oil, which improve the properties of rice starches have been chosen to coat dried walnut kernels. The coated walnuts were significantly (p ≤ .05) lighter than the control group. Results on different functional ingredients also showed significant variations, for example; yellowness of walnut in the presence of chitosan was lower among the coating formulas (p ≥ .05). However, the variations in textural characteristics of walnuts with different coating formulas remained nonsignificant (p > .05).


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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
DOI Number: https://doi.org/10.1111/jfpe.12607
Publisher: Wiley Periodicals
Keywords: Walnut; Coating; Starch films; Rice starch
Depositing User: Nabilah Mustapa
Date Deposited: 02 Jul 2018 10:58
Last Modified: 02 Jul 2018 10:58
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1111/jfpe.12607
URI: http://psasir.upm.edu.my/id/eprint/13514
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