부산대학교 도서관

Recent works have shown that dielectric properties play an important role in distinguishing parasites from freshwater fishes. However, a few studies focus on the fishes of family Cyprinidae, which is the top cause of cholangiocarcinoma (CCA) in Thailand. In this paper, we propose to study dielectric properties for three fish types in family Cyprinidae. The main aim is to compare the differences between the dielectric properties of both the fishes and the parasites. The experiment was based on studying three fish types, with different characters, in family Cyprinidae: Common silver barb (CSB), Seven-striped barb (SC) and Bighead carp (BC). Dielectric properties measurement for head, trunk, tail and belly of the fishes were compared between the fish with scales and fish with removed scales by using frequencies at 40 MHz, 915 MHz, 1800 MHz, and 2450 MHz. The experimental results showed that the dielectric loss factor of the fish with removed scales was higher than the dielectric loss factor of the fish with scales and the dielectric loss factor of the parasites in both RF and MW. For the parasite, it can be significantly observed that the dielectric loss factor both RF and MW were higher than the dielectric loss factor of the fish with scales. This indicates this study is useful for dielectric heating application in exterminating the parasites in the fishes. This result can be applied in the future to exterminate the parasites in uncooked fish by using dielectric heating technique.