TY  - JOUR
T1  - Design of prototype device for killing anisakid larvae using pulsed power technology
A1  - Onitsuka, Chinari
A1  - Nakamur, Kengo
A1  - Wang, Douyan
A1  - Matsuda, Mikiya
A1  - Ogasawara, Akihiko
A1  - Tanaka, Ritsuo
A1  - Inoue, Yoichi
A1  - Kouduma, Masayoshi
A1  - Negoro, Kenji
A1  - Negoro, Takayasu
A1  - Namihira, Takao
Y1  - 2023///
KW  - Anisakis
KW  - Anisakid larvae
KW  - parasite
KW  - pulsed current
KW  - pulsed power.
JF  - International Journal of Plasma Environmental Science and Technology
VL  - 17
IS  - 3
SP  - e03001
EP  - e03001
DO  - https://doi.org/10.34343/ijpest.2023.17.e03001
UR  - http://ijpest.com/Contents/17/3/e03001.html
N2  - Anisakid nematode larvae are found in fish and cephalopods and can cause anisakiasis in humans when raw or undercooked seafood is consumed. An estimated 20,000 cases of anisakiasis occur annually in Japan. The only practical way to kill anisakis apart from heating has been freezing, but freezing can damage the texture and color of the fish meat. As an alternative to freezing, we have shown that anisakis in fish can be killed through the repeated application of pulsed high current through the fish meat, and that the quality of pulse-treated fish meat is almost the same as that of untreated meat. The following includes a description of a prototype device used to kill anisakid larvae using pulsed power technology. High temperatures can adversely affect fish meat quality. In order to apply the pulsed current while keeping the temperature of the fish meat as low as possible, we created a treatment tank filled with 180 liters of buffer saltwater, placed the fish meat between plane-to-plane electrodes in the treatment tank, and applied pulsed current while using pumps to agitate the water. Parameters such as saltwater conductivity, charging voltage, and capacitance necessary for killing anisakid larvae were studied using Taguchi methods, and the performance of the device was analyzed. To ensure worker safety, all parts of the device that may be touched by workers were grounded. The device was installed at a seafood processing factory where tests were conducted showing that all test larvae were killed. Currently, the company sells horse mackerel fillets treated with this device to some of its customers, and it is highly regarded for its safety and low impact on meat quality.
ER  -