Determination of ozone distribution in fish cold storage dedicated plasma ozone technology

¹ Diponegoro University, Center for Plasma Ressearch, Faculty of Science and Mathematics, Semarang, Indonesia
² Diponegoro University, Physics Department, Faculty of Science and Mathematics, Semarang, Indonesia
³ Diponegoro University, Fishery Products Technology Department, Faculty of Fisheries and Marine Sciences, Semarang, Indonesia

^* Corresponding author: intan.zahar@st.fisika.undip.ac.id

Abstract

Research on the distribution of ozone in a cold storage has been done. This cold storage is equipped with an ozone piping system. Ozone inserts to the cold storage was generated by dielectric barrier discharge plasma. The reactor is made of two stainless steel mesh wire cylindrical electrodes and a barried by a pyrex tube. The pipes are hollowed so that ozone can be distributed into cold storage. The distribution of ozone in cold storage is determined by placing a petri dish in twenty-four different points. Ozone that inserted to storage (10 cubic meters) with a capacity of 40 grams/hour. The inserting of ozone into cold storage was done with four different lengths of time wich are 30, 60, 90, and 120 minutes. Ozone distribution in storage was almost the same at each measurement points. The most influential in the distribution is the time. We found that the distribution of ozone into storage with average ozone concentration of 4.3, 6.3, 4.6, and 4.0 ppm with time 30, 60, 90, 120 minutes respectively. Futhermore, we also dissolve the ozone into the water in the tank in the same storage with temperature (2-8)⁰C. We found that the concentration of dissolved ozone in the water without samples was always greater than that of the existing fish and shrimp samples, with various dissolution times between (30-120) minutes at 30 minutes intervals. Cold storage dedicated ozone was used to store fish used to store tuna, milkfish and shrimp. With ozone immersion of fish in ozone-soluble water can maintain fish quality for 16 days.