Study summary

Disinfection effect and its mechanism of electrolyzed oxidizing water on spores of Bacillus subtilis var. niger

Food Science and Biotechnology · 2011

Summary

Abstract

A study was carried out on the disinfection efficiency of electrolyzed oxidizing water (EOW) on spores of Bacillus subtilis var. niger. The results showed a remarkable fungicidal rate of 100% after 20 min duration of 191 mg/L active available chlorine (ACC). The disinfection effect was improved with increased ACC or prolonged disinfection time, while organic interferents exerted a strong concentration-dependent inhibition against the disinfection. The disinfection mechanism was also investigated at bio-molecular level. EOW decreased dehydrogenase activity, intensified membrane permeability, elevated suspension conductivity, and caused leakage of intracellular K+, proteins, and DNA, indicating a damage of cell walls and membranes. Effects of EOW on microbiological ultra-structures were also verified by transmission electronic microscopy (TEM) images, showing that EOW destroyed protective barriers of the microbe and imposed some damages upon the nucleus area.

Study details

  • Published in: Food Science and Biotechnology 20.4 (2011): 889
  • Microbes studied: Fungi, Bacillus subtilis

Source

Read the original study

Source: Food Science and Biotechnology 20.4 (2011): 889

Conditions tested

ParameterValue
OrganismsBacillus spp., Fungi (general)
Relevant sectorsFood Processing
PublicationFood Science and Biotechnology, 2011

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Published figures are obtained under controlled conditions, usually on clean surfaces or in defined matrices. Organic load, surface condition, temperature and application coverage all affect real-world performance. Use these numbers to design a protocol, then validate it on your own site with environmental swabbing.

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