Title: Multivariate analysis of volumetric shrinking of industrial cassava varieties

Authors: Angélica M. Torregroza; Jhonatan A. Rodríguez; Rafael R. Ruíz; Rolando J. López

Addresses: Faculty of Basic Sciences Engineering and Architecture, Corporación Universitaria del Caribe-CECAR, Western Trunk Road Km 1, A road to Corozal - Sincelejo, Colombia ' Faculty of Basic Sciences Engineering and Architecture, Corporación Universitaria del Caribe-CECAR, Western Trunk Road Km 1, A road to Corozal - Sincelejo, Colombia ' Faculty of Basic Sciences Engineering and Architecture, Corporación Universitaria del Caribe-CECAR, Western Trunk Road Km 1, A road to Corozal - Sincelejo, Colombia ' Faculty of Basic Sciences Engineering and Architecture, Corporación Universitaria del Caribe-CECAR, Western Trunk Road Km 1, A road to Corozal - Sincelejo, Colombia

Abstract: The objective was to analyse the factors that affect the volumetric contraction of varieties of industrial cassava, by analysing the same covariance matrices, under a linear multivariate model (Manova). Methodologically, a drying process was carried out of three varieties of industrial cassava (Corpoica Tai, Verónica and Gynes), varying the operating conditions of the process, in terms of temperature (45°C, 55°C and 70°C), drying speed (1 m/s, 3 m/s and 4 m/s) and time (from 0 min-480 min in 15 min intervals). For the analysis of data Manova was performed, where the response variables were a volumetric contraction, length and width of the cassava parallelepipeds. It is concluded that the joint effect of factors, such as the variety and speed of drying, acting together with the temperature on the evaluated response variables, since they were interactions that marked significant differences throughout the experiment, therefore, they directly affect the volumetric reduction of industrial cassava varieties.

Keywords: volumetric contraction; multivariate analysis; mass transfer; cassava; drying speed; drying process; shrinking; dehydration; distribution of moisture; temperature.

DOI: 10.1504/WRSTSD.2020.113477

World Review of Science, Technology and Sustainable Development, 2020 Vol.16 No.4, pp.332 - 342

Received: 03 Jan 2019
Accepted: 26 Jul 2019

Published online: 01 Mar 2021 *

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