Mon, 18 Dec 2017

Microwave dielectric properties of unsaturated edible oils at different temperatures

Harish C. Chaudhari1*, Swapnil R. Sarda2, Vijay J. Shinde1

1. Microwave Laboratory, P.G. Department of Physics, J.E.S. College, Jalna-431 203 (India).

2. P.G. Department of Chemistry, J.E.S. College, Jalna-431 203 (India).


ABSTRACT

The real (ε’) and imaginary (ε’’) parts of the complex dielectric constant (ε*) of different unsaturated edible oils were measured at different temperatures ranging from 30 0C to 70 0C at 9.435 GHz microwave frequency. The X-band setup in the TE10 mode with slotted section and crystal detector were used for this measurement. The values of dielectric constant and dielectric loss show remarkable variation with temperature. It observed that the dielectric constant and dielectric loss are different for different oils, due to their different physical and chemical properties.

Keywords: Microwave X-band, Dielectric constant, Dielectric loss.


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