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Comparative stability and efficacy of selected chlorine-based biocides against Escherichia coli in planktonic and biofilm states.
Food Res Int. 2017 12; 102:511-518.FR

Abstract

Microbial contamination is an unavoidable problem in industrial processes. Sodium hypochlorite (SH) is the most common biocide used for industrial disinfection. However, in view of the current societal concerns on environmental and public health aspects, there is a trend to reduce the use of this biocide as it can lead to the formation of organochlorinated carcinogenic compounds. In this work the efficacy of SH was assessed against Escherichia coli in planktonic and biofilm states and compared with three alternative chlorine-based biocides: neutral electrolyzed oxidizing water (NEOW), chlorine dioxide (CD) and sodium dichloroisocyanurate (NaDCC). The planktonic tests revealed that SH had the fastest antimicrobial action, NaDCC exhibited the highest antimicrobial rate and NEOW caused the highest antimicrobial effects. Additionally, NEOW was the biocide that allowed the highest formation of reactive oxygen species (ROS). In biofilm control, NEOW and CD were the most efficient biocides causing 3.26 and 3.20 log CFU·cm-2 reduction, respectively. In terms of stability for chlorine depletion, NEOW had the longest decay time for chlorine loss (70days at 5°C) and the lowest chlorine loss rate (0.013ppm·min-1 at 5°C). CD and NaDCC had equivalent stability. The overall results demonstrated NEOW as a good alternative to SH due to its higher antimicrobial effects and lower chlorine depletion over time.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Meireles A
LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
Ferreira C
LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
Melo L
LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
Simões M
LEPABE, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal. Electronic address: mvs@fe.up.pt.

MeSH

BiofilmsChlorine CompoundsDisinfectantsEquipment ContaminationEscherichia coliIndustrial MicrobiologyMicrobial ViabilityOxidesReactive Oxygen SpeciesSodium HypochloriteTime FactorsTriazinesWater

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

29195980

Citation

Meireles, Ana, et al. "Comparative Stability and Efficacy of Selected Chlorine-based Biocides Against Escherichia Coli in Planktonic and Biofilm States." Food Research International (Ottawa, Ont.), vol. 102, 2017, pp. 511-518.
Meireles A, Ferreira C, Melo L, et al. Comparative stability and efficacy of selected chlorine-based biocides against Escherichia coli in planktonic and biofilm states. Food Res Int. 2017;102:511-518.
Meireles, A., Ferreira, C., Melo, L., & Simões, M. (2017). Comparative stability and efficacy of selected chlorine-based biocides against Escherichia coli in planktonic and biofilm states. Food Research International (Ottawa, Ont.), 102, 511-518. https://doi.org/10.1016/j.foodres.2017.09.033
Meireles A, et al. Comparative Stability and Efficacy of Selected Chlorine-based Biocides Against Escherichia Coli in Planktonic and Biofilm States. Food Res Int. 2017;102:511-518. PubMed PMID: 29195980.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparative stability and efficacy of selected chlorine-based biocides against Escherichia coli in planktonic and biofilm states. AU - Meireles,Ana, AU - Ferreira,Carla, AU - Melo,Luís, AU - Simões,Manuel, Y1 - 2017/09/12/ PY - 2017/07/18/received PY - 2017/09/07/revised PY - 2017/09/09/accepted PY - 2017/12/3/entrez PY - 2017/12/3/pubmed PY - 2019/7/23/medline KW - Antimicrobial action KW - Biofilm control KW - Chlorine dioxide KW - Neutral electrolyzed oxidizing water KW - Sodium dichloroisocyanurate KW - Sodium hypochlorite SP - 511 EP - 518 JF - Food research international (Ottawa, Ont.) JO - Food Res Int VL - 102 N2 - Microbial contamination is an unavoidable problem in industrial processes. Sodium hypochlorite (SH) is the most common biocide used for industrial disinfection. However, in view of the current societal concerns on environmental and public health aspects, there is a trend to reduce the use of this biocide as it can lead to the formation of organochlorinated carcinogenic compounds. In this work the efficacy of SH was assessed against Escherichia coli in planktonic and biofilm states and compared with three alternative chlorine-based biocides: neutral electrolyzed oxidizing water (NEOW), chlorine dioxide (CD) and sodium dichloroisocyanurate (NaDCC). The planktonic tests revealed that SH had the fastest antimicrobial action, NaDCC exhibited the highest antimicrobial rate and NEOW caused the highest antimicrobial effects. Additionally, NEOW was the biocide that allowed the highest formation of reactive oxygen species (ROS). In biofilm control, NEOW and CD were the most efficient biocides causing 3.26 and 3.20 log CFU·cm-2 reduction, respectively. In terms of stability for chlorine depletion, NEOW had the longest decay time for chlorine loss (70days at 5°C) and the lowest chlorine loss rate (0.013ppm·min-1 at 5°C). CD and NaDCC had equivalent stability. The overall results demonstrated NEOW as a good alternative to SH due to its higher antimicrobial effects and lower chlorine depletion over time. SN - 1873-7145 UR - https://www.unboundmedicine.com/medline/citation/29195980/Comparative_stability_and_efficacy_of_selected_chlorine_based_biocides_against_Escherichia_coli_in_planktonic_and_biofilm_states_ DB - PRIME DP - Unbound Medicine ER -