Kinetics Modelling of Moringa Oleifera Leaves using Microwave Drying

Nabilah Abdul Samad; Dayang Norulfairuz Abang Zaidel; Nor Alafiza Yunus; Ida Idayu Muhamad; Yanti Maslina Mohd Jusoh; Daniel Joe Dailin; Joko Sulistyo

doi:10.37934/arfmts.113.1.167175

Authors

Nabilah Abdul Samad Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
Dayang Norulfairuz Abang Zaidel Department of Chemical & Environmental Engineering, Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, 54100 Kuala Lumpur, Malaysia
Nor Alafiza Yunus Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
Ida Idayu Muhamad Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
Yanti Maslina Mohd Jusoh Department of Bioprocess and Polymer Engineering, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
Daniel Joe Dailin Institute of Bioproduct Development, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia
Joko Sulistyo Universitas Ciputra, Surabaya, Jawa Timur 60219, Indonesia

DOI:

https://doi.org/10.37934/arfmts.113.1.167175

Keywords:

Moringa oleifera, Microwave drying, Kinetic model, Effective moisture diffusivity, Activation energy

Abstract

The drying kinetics of (Moringa Oleifera) leaves were studied at various microwave power levels (300, 500, 800, and 1000 W) using an existing drying mathematical model. The best-fitted mathematical models of the drying curves were determined by considering the coefficient of determination (R2), SSE, and RMSE based on the experimental drying data of moringa leaves. For drying M. oleifera leaves, three out of six models exhibited the optimum drying behaviour with the highest R2 and lowest SSE and RMSE values, with R2, SSE, and RMSE values ranging from 0.92-0.98, 0.09-0.3, and 0.06-0.10, respectively. Besides, the effective moisture diffusivity of moringa oleifera leaves during microwave drying varied from 1.56 × 10-8 to 5.49 × 10-8 m2/s. The values of D0 and Ea from microwave drying of Moringa oleifera leaves were estimated as 9.0 x 10-8 m2/s and 17.53 W/g.