Low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater
© 2016 Elsevier Ltd The bactericidal effect of pulsating direct current (PC) generated at a very low amperage (0.01 A) with a frequency of 5 Hz or 14 kHz against two marine fish pathogens, Edwardsiella tarda and Vibrio parahaemolyticus, in circulating seawater at 15 and 25 °C in comparison with the...
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th-cmuir.6653943832-462422018-04-25T07:27:00Z Low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater Won Ki Min Khamtorn Pudtikajorn Moojoong Kim Il Shik Shin Donghwa Chung Biochemistry, Genetics and Molecular Biology Agricultural and Biological Sciences © 2016 Elsevier Ltd The bactericidal effect of pulsating direct current (PC) generated at a very low amperage (0.01 A) with a frequency of 5 Hz or 14 kHz against two marine fish pathogens, Edwardsiella tarda and Vibrio parahaemolyticus, in circulating seawater at 15 and 25 °C in comparison with the effect of direct current (DC) of the same amperage was investigated. The bactericidal effect was directly correlated with the generation of active chlorine species (ACS) and the treatment duration. PC treatment at 14 kHz resulted in complete bacterial inactivation when the ACS level reached 0.11–0.12 mg/L after 45–60 min of treatment. PC treatment at 5 Hz required generation of only 0.03–0.07 mg/L ACS to achieve complete bacterial inactivation, although a slightly longer treatment duration (60–90 min) was needed. DC treatment resulted in complete disinfection within a shorter time (30 min) due to greater ACS production. The bactericidal effect and ACS generation were weaker at the higher temperature (25 °C) due to more rapid evaporation of Cl 2 gas. The pH of the seawater maintained at ∼8.0. A disinfection study in circulating non-chloride Na 2 SO 4 solution at pH 8.0 showed that the electric pulsation did not have notable bactericidal effect up to 14 kHz at 0.2 A. 2018-04-25T06:51:50Z 2018-04-25T06:51:50Z 2017-03-01 Journal 09567135 2-s2.0-85006299234 10.1016/j.foodcont.2016.08.043 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85006299234&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/46242 |
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Biochemistry, Genetics and Molecular Biology Agricultural and Biological Sciences Won Ki Min Khamtorn Pudtikajorn Moojoong Kim Il Shik Shin Donghwa Chung Low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater |
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© 2016 Elsevier Ltd The bactericidal effect of pulsating direct current (PC) generated at a very low amperage (0.01 A) with a frequency of 5 Hz or 14 kHz against two marine fish pathogens, Edwardsiella tarda and Vibrio parahaemolyticus, in circulating seawater at 15 and 25 °C in comparison with the effect of direct current (DC) of the same amperage was investigated. The bactericidal effect was directly correlated with the generation of active chlorine species (ACS) and the treatment duration. PC treatment at 14 kHz resulted in complete bacterial inactivation when the ACS level reached 0.11–0.12 mg/L after 45–60 min of treatment. PC treatment at 5 Hz required generation of only 0.03–0.07 mg/L ACS to achieve complete bacterial inactivation, although a slightly longer treatment duration (60–90 min) was needed. DC treatment resulted in complete disinfection within a shorter time (30 min) due to greater ACS production. The bactericidal effect and ACS generation were weaker at the higher temperature (25 °C) due to more rapid evaporation of Cl 2 gas. The pH of the seawater maintained at ∼8.0. A disinfection study in circulating non-chloride Na 2 SO 4 solution at pH 8.0 showed that the electric pulsation did not have notable bactericidal effect up to 14 kHz at 0.2 A. |
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Journal |
author |
Won Ki Min Khamtorn Pudtikajorn Moojoong Kim Il Shik Shin Donghwa Chung |
author_facet |
Won Ki Min Khamtorn Pudtikajorn Moojoong Kim Il Shik Shin Donghwa Chung |
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Won Ki Min |
title |
Low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater |
title_short |
Low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater |
title_full |
Low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater |
title_fullStr |
Low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater |
title_full_unstemmed |
Low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater |
title_sort |
low-amperage pulsating direct current has a bactericidal effect on marine fish pathogens in circulating seawater |
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2018 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85006299234&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/46242 |
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