Wahab, Bashirat A., Adebowale, Abdul-Rasaq A., Sanni, Silifat A., Sobukola, Olajide P., Obadina, Adewale O., Kajihausa, Olatundun E., Adegunwa, Mojisola O., Sanni, Lateef O. and Tomlins, Keith (2016) Effect of species, pretreatments, and drying methods on the functional and pasting properties of high-quality yam flour. Food Science & Nutrition, 4 (1). pp. 50-58. ISSN 2048-7177 (doi:10.1002/fsn3.260)

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Abstract

The study investigated the functional properties of HQYF (high-quality yam flour) from tubers of four dioscorea species. The tubers were processed into HQYF using two pretreatments (potassium metabisulphite: 0.28%, 15 min; blanching: 70°C, 15 min) and drying methods (cabinet: 60°C, 48 h; sun drying: 3 days). Significant differences (P < 0.05) were observed in pasting characteristics of flours among the four species. The drying method significantly affected only the peak viscosity. The interactive effect of species, pretreatment, and drying methods on the functional properties was significant (P < 0.05) except for emulsification capacity, angle of repose, and least gelation concentration. The significant variation observed in most of the functional properties of the HQYF could contribute significantly to breeding programs of the yam species for diverse food applications. The pastes of flour from Dioscorea dumetorum pretreated with potassium metabisulphite and dried under a cabinet dryer were stable compared to other samples, hence will have better applications in products requiring lower retrogradation during freeze/thaw cycles.

Item Type:	Article
Additional Information:	This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords:	Dioscorea sp., drying, functional properties, pretreatment, yam
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > Natural Resources Institute Faculty of Engineering & Science > Natural Resources Institute > Food & Markets Department
Last Modified:	14 Jun 2019 10:20
URI:	http://gala.gre.ac.uk/id/eprint/15173

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