MICROWAVE DRYING OF ALOE VERA (ALOE BARBADENSIS MILLER): MATHEMATICAL MODELING, KINETICS AND MASS TRANSFER ASPECTS

Authors

  • G. Srinivasan Assistant Professor (Sr.Gr.), Erode Sengunthar Engineering College, Erode, Tamil Nadu,.India
  • R. Baskar Professor and Head, Kongu Engineering College, Perundurai, Tamil Nadu, India

DOI:

https://doi.org/10.24297/jac.v12i22.120

Keywords:

Microwave, Drying, Aloe vera, Moisture, energy.

Abstract

Aloe vera has extensive application in food and pharmaceutical industry in fact contains 97 percent of water. It’s perishable in nature and poor shelf life makes it essential to study the drying characteristics of aloe vera. The objective of this present study is to investigate the effect of different microwave (MW) respective power levels (180 , 360 ,540 , 720 and 900 Watts ) regarding the  moisture ratio (MR), drying rate (DR), effective moisture diffusivity (EMD), specific energy consumption (SEC) and drying efficiency (DE) of aloe vera. The drying process took 70 - 26 .5 minutes for attainment of equilibrium moisture content. A mathematical model done by Midilli et al.  is considered to be the best and most suitable for a drying conditions among the various thin layer models. The effective moisture diffusivity value at 180 Watts (W) of MW power was found as 4.5 × 10-8 m2/sec. while it was raised to 9.45 x10-7 m2/sec at 900 W in this study. Lowest energy consumption 1.4 MJ/Kg water and maximum drying efficiency occurred at higher microwave power level 900 Watts due to less drying duration (time).

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Author Biographies

G. Srinivasan, Assistant Professor (Sr.Gr.), Erode Sengunthar Engineering College, Erode, Tamil Nadu,.India

Department of Chemical Engineering,

R. Baskar, Professor and Head, Kongu Engineering College, Perundurai, Tamil Nadu, India

Department of Food Technology,

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Published

2016-12-15

How to Cite

Srinivasan, G., & Baskar, R. (2016). MICROWAVE DRYING OF ALOE VERA (ALOE BARBADENSIS MILLER): MATHEMATICAL MODELING, KINETICS AND MASS TRANSFER ASPECTS. JOURNAL OF ADVANCES IN CHEMISTRY, 12(22), 5437–5445. https://doi.org/10.24297/jac.v12i22.120

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