Temperature Dependent Dielectric Properties Using Reflectrometric Technique of (Drumstick) Moringa oleifera Lam.

Abstract

Abstract: The use of dielectric properties of agricultural products for sensing moisture in seeds and their powder form and their applications in microwave dielectric heating are discussed briefly. Values of dielectric properties of products in powder form are presented in tables and graphically to show the dependence of these properties on frequency, moisture content, and temperrature. Use of dielectric properties of Moringa oleifera Lam. For moisture measurement has been most prominent agricultural applications for such data. The results show that, there was a systematic increase in dielectric constant (ε') and loss factor (ε") with increasing values of relative packing fraction (δr) and decrease in dielectric constant and loss factor with increasing temperature. The moisture percentage measured by Thermo -gravimetric method. Experimental results of different relative packing fractions were further used to obtain transformation to 100% solid bulk using correlation equations of Landau-Lifshitz- Looyenga and Bottcher. The result shows that, there is a fair agreement between experimental values and theoretical values of different dielectric parameters.