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Optimization of Solar Drying of Blanched and Unblanched Aerial Yam using Response Surface Methodology

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Optimization of Solar Drying of Blanched and Unblanched Aerial Yam using Response Surface Methodology


Emmanuel C. Nwadike. | Matthew N. Abonyi. | Joseph T. Nwabanne. | Pascal E. Ohale



Emmanuel C. Nwadike. | Matthew N. Abonyi. | Joseph T. Nwabanne. | Pascal E. Ohale "Optimization of Solar Drying of Blanched and Unblanched Aerial Yam using Response Surface Methodology" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-3, April 2020, pp.659-666, URL: https://www.ijtsrd.com/papers/ijtsrd30598.pdf

This paper focuses on the application of response surface methodology (RSM) for the modelling and optimization of unblanched and blanched aerial yam drying using solar dryer. Mass in gram of the sample, slice thickness of the sample, and the airspeed of dryer are the independent variables considered, while the response of interest is the moisture content. RSM via central composite design (CCD) was used to optimize the variables of interest, while artificial neural network was used to validate the result. The result showed that a second order polynomial regression model could convincingly interpret the drying process of the aerial yam. A coefficient of determination (R2) value of 0.9991 and 0.9828, model F-value of 1186.03 and 60.75 for unblanched and blanched aerial yam respectively were obtained. P-value (< 0.0001), and low value of coefficient of variation (2.43 and 9.75 % for unblanched and blanched sample) indicated the fitness of the model. The optimum process variable obtained were 71 g, 3.2 mm and 1.5 m/s, and 70 g, 3.0 mm and 1.5 m/s for blanched and unblanched sample, respectively.

Aerial yam, solar dryer, drying, optimization, Unblanched, Blanching


IJTSRD30598
Volume-4 | Issue-3, April 2020
659-666
IJTSRD | www.ijtsrd.com | E-ISSN 2456-6470
Copyright © 2019 by author(s) and International Journal of Trend in Scientific Research and Development Journal. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0) (http://creativecommons.org/licenses/by/4.0)

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