Study summary

Physicochemical properties and bactericidal efficiency of neutral and acidic electrolyzed water under different storage conditions

Journal of Food Engineering · 2009

Summary

Abstract

Neutral (NEW) and acidic (AEW) electrolyzed water were stored in open or closed glass bottles under light or dark conditions at 20 C for 30 days. The pH, oxidation reduction potential (ORP), electrical conductivity (EC), available chlorine concentration (ACC), dissolved oxygen (DO), and bactericidal efficiency of NEW and AEW were determined during storage or before and after storage, respectively. The pH and EC of NEW and AEW remained unchanged in storage. The ORP, ACC and DO of AEW decreased 22%, 100% and 52% under open storage conditions, respectively. Light had no significant effects on the physicochemical properties of NEW (P > 0.05). Bactericidal efficiency was not markedly affected by storage conditions for NEW, but decreased significantly for AEW under open storage conditions. Electrolyzed water should be stored in closed containers or used immediately to prevent the loss of available chlorine that is one of the main contributing factors for antimicrobial activity.

Study details

  • Published in: Journal of Food Engineering 91.4 (2009): 582-586
  • Microbes studied: Escherichia coli O157:H7, Salmonella enteritidis

Source

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Source: Journal of Food Engineering 91.4 (2009): 582-586

Conditions tested

ParameterValue
OrganismsEscherichia coli, Salmonella
Relevant sectorsFood Processing, In vitro
PublicationJournal of Food Engineering, 2009

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