Application of highly purified electrolyzed chlorine dioxide for tilapia fillet disinfection.
This research aimed to develop an electrolysis method to generate high-concentration chlorine dioxide (ClO2) for tilapia fillet disinfection. The designed generator produced up to 3500 ppm of ClO2 at up to 99% purity. Tilapia fillets were soaked in a 400 ppm ClO2 solution for 5, 10, and 25 min. Results show that total plate counts of tilapia, respectively, decreased by 5.72 to 3.23, 2.10, and 1.09 log CFU/g. In addition, a 200 ppm ClO2 solution eliminated coliform bacteria and Escherichia coli in 5 min with shaking treatment. Furthermore, ClO2 and trihalomethanes (THMs) residuals on tilapia fillets were analyzed by GC/MS and were nondetectable (GC-MS detection limit was 0.12 ppb). The results conform to Taiwan's environmental protection regulations and act governing food sanitation.
Department of Food Science, National Pingtung University of Science and Technology, 1 Shuefu Road, Neipu, Pingtung 91201, Taiwan.
Chen-Hsing
CH
Yu
Department of Biological Science and Technology, National Pingtung University of Science and Technology, 1 Shuefu Road, Neipu, Pingtung 91201, Taiwan.
Tzou-Chi
TC
Huang
Department of Food Science, National Pingtung University of Science and Technology, 1 Shuefu Road, Neipu, Pingtung 91201, Taiwan.
Chao-Chin
CC
Chung
Department of Food Science, National Pingtung University of Science and Technology, 1 Shuefu Road, Neipu, Pingtung 91201, Taiwan.
Hao-Hsun
HH
Huang
Department of Food Science, National Pingtung University of Science and Technology, 1 Shuefu Road, Neipu, Pingtung 91201, Taiwan.
Ho-Hsien
0000-0002-2756-0804
HH
Chen
D000818:Animals; D017606:Chlorine Compounds / Q000494:pharmacology*; D015169:Colony Count, Microbial; D004203:Disinfection; D004572:Electrolysis; D004926:Escherichia coli / Q000187:drug effects / Q000302:isolation & purification; D005516:Food Microbiology; D008401:Gas Chromatography-Mass Spectrometry; D010087:Oxides / Q000494:pharmacology*; D017747:Seafood; D017210:Tilapia / Q000382:microbiology*
D017606:Chlorine Compounds; D010087:Oxides; C025109:chlorine dioxide