Author(s)

Anil Lonappan^1*, Thomas Joachim Odhiambo Afullo², Williams Mark Uren Daniels³

¹Department of Electrical Engineering, Mangosuthu University of Technology, Jacobs, Durban, South Africa.
²School of Electrical Electronic and Computer Engineering, Howard College, University of KwaZulu-Natal, Durban, South Africa.
³College of Health Sciences, School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa.

This paper discusses a novel method of analyzing the dielectric properties of juices at various frequencies of microwave band. The measurements were performed using a rectangular cavity with the perturbation technique at the S-band of microwave frequency with fresh juices made instantly from the fruits as well as collected from the packed fruit juices available in the market with the normal added preservatives in order to keep the increase of the shelf life. From the results, it is observed in the certain dielectric properties, the fresh juices samples and packed juices samples were varying and also varying over a period of time. This measurement method is simple and quick and can be used over a range of juices. These results prove a new method of determining the quality control of juices using microwave principles.

Fruit, Juice, Cavity Perturbation, Shelf Life, Quality Control

Lonappan, A. , Afullo, T. and Daniels, W. (2017) Analysis of Certain Fruit Juices Using Microwave Techniques. Journal of Electromagnetic Analysis and Applications, 9, 123-134. doi: 10.4236/jemaa.2017.99011.