Development of a portable electrolytic sanitising unit for the production of neutral electrolysed water

Jufang Zhang; Shigang Zhou; Ronghua Chen; Hongshun Yang

doi:10.1016/j.lwt.2017.04.020

Development of a portable electrolytic sanitising unit for the production of neutral electrolysed water

Jufang Zhang
, Shigang Zhou
, Ronghua Chen
, Hongshun Yang

School of Electronics and Information

National University of Singapore
Ltd.

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The aim of this study was to develop and evaluate the characteristics and performance of a portable electrolytic sanitising unit. Free available chlorine (FAC), oxidation-reduction potential, and pH of electrolysed water were measured. Response surface methodology coupled with a Box-Behnken design was used to describe the input-output relationship and optimise FAC production. A partial catholyte solution was reintroduced to electrolysis for generating neutral electrolysed water. The result found that RuO₂-IrO₂/TiO₂ electrode was very effective. A FAC concentration of 4 mg/L achieved >2 log CFU/mL reduction, while a FAC concentration of 40 mg/L achieved >6 log CFU/mL reduction in Escherichia coli O157:H7 and Listeria monocytogenes BAA-839. The developed sanitiser had a pH of 7.08 ± 0.08, and the commercial sanitiser had a pH of 3.77 ± 0.18. The developed sanitiser had similar bactericidal effects as the commercial sanitiser. The results revealed that the developed sanitising unit is promising for the control of foodborne pathogens.

Original language	English
Pages (from-to)	207-215
Number of pages	9
Journal	LWT
Volume	82
DOIs	https://doi.org/10.1016/j.lwt.2017.04.020
State	Published - 1 Sep 2017

Keywords

Bactericidal activity
Box-Behnken design
Escherichia coli O157:H7
Listeria monocytogenes
Portable sanitising unit

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10.1016/j.lwt.2017.04.020

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title = "Development of a portable electrolytic sanitising unit for the production of neutral electrolysed water",

abstract = "The aim of this study was to develop and evaluate the characteristics and performance of a portable electrolytic sanitising unit. Free available chlorine (FAC), oxidation-reduction potential, and pH of electrolysed water were measured. Response surface methodology coupled with a Box-Behnken design was used to describe the input-output relationship and optimise FAC production. A partial catholyte solution was reintroduced to electrolysis for generating neutral electrolysed water. The result found that RuO2-IrO2/TiO2 electrode was very effective. A FAC concentration of 4 mg/L achieved >2 log CFU/mL reduction, while a FAC concentration of 40 mg/L achieved >6 log CFU/mL reduction in Escherichia coli O157:H7 and Listeria monocytogenes BAA-839. The developed sanitiser had a pH of 7.08 ± 0.08, and the commercial sanitiser had a pH of 3.77 ± 0.18. The developed sanitiser had similar bactericidal effects as the commercial sanitiser. The results revealed that the developed sanitising unit is promising for the control of foodborne pathogens.",

keywords = "Bactericidal activity, Box-Behnken design, Escherichia coli O157:H7, Listeria monocytogenes, Portable sanitising unit",

author = "Jufang Zhang and Shigang Zhou and Ronghua Chen and Hongshun Yang",

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year = "2017",

month = sep,

day = "1",

doi = "10.1016/j.lwt.2017.04.020",

language = "英语",

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AU - Zhang, Jufang

AU - Zhou, Shigang

AU - Chen, Ronghua

AU - Yang, Hongshun

PY - 2017/9/1

Y1 - 2017/9/1

N2 - The aim of this study was to develop and evaluate the characteristics and performance of a portable electrolytic sanitising unit. Free available chlorine (FAC), oxidation-reduction potential, and pH of electrolysed water were measured. Response surface methodology coupled with a Box-Behnken design was used to describe the input-output relationship and optimise FAC production. A partial catholyte solution was reintroduced to electrolysis for generating neutral electrolysed water. The result found that RuO2-IrO2/TiO2 electrode was very effective. A FAC concentration of 4 mg/L achieved >2 log CFU/mL reduction, while a FAC concentration of 40 mg/L achieved >6 log CFU/mL reduction in Escherichia coli O157:H7 and Listeria monocytogenes BAA-839. The developed sanitiser had a pH of 7.08 ± 0.08, and the commercial sanitiser had a pH of 3.77 ± 0.18. The developed sanitiser had similar bactericidal effects as the commercial sanitiser. The results revealed that the developed sanitising unit is promising for the control of foodborne pathogens.

AB - The aim of this study was to develop and evaluate the characteristics and performance of a portable electrolytic sanitising unit. Free available chlorine (FAC), oxidation-reduction potential, and pH of electrolysed water were measured. Response surface methodology coupled with a Box-Behnken design was used to describe the input-output relationship and optimise FAC production. A partial catholyte solution was reintroduced to electrolysis for generating neutral electrolysed water. The result found that RuO2-IrO2/TiO2 electrode was very effective. A FAC concentration of 4 mg/L achieved >2 log CFU/mL reduction, while a FAC concentration of 40 mg/L achieved >6 log CFU/mL reduction in Escherichia coli O157:H7 and Listeria monocytogenes BAA-839. The developed sanitiser had a pH of 7.08 ± 0.08, and the commercial sanitiser had a pH of 3.77 ± 0.18. The developed sanitiser had similar bactericidal effects as the commercial sanitiser. The results revealed that the developed sanitising unit is promising for the control of foodborne pathogens.

KW - Bactericidal activity

KW - Box-Behnken design

KW - Escherichia coli O157:H7

KW - Listeria monocytogenes

KW - Portable sanitising unit

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DO - 10.1016/j.lwt.2017.04.020

M3 - 文章

AN - SCOPUS:85018465363

SN - 0023-6438

VL - 82

SP - 207

EP - 215

JO - LWT

JF - LWT

ER -

Development of a portable electrolytic sanitising unit for the production of neutral electrolysed water

Abstract

Keywords

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