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