Molecules 2013, 18(4), 4018-4025; doi:10.3390/molecules18044018
Article

Effect of a Combination of Low Level Ozone and Metal Ions on Reducing Escherichia coli O157:H7 and Listeria monocytogenes

1,†email, 2,†email, 3email and 4,* email
Received: 16 February 2013; in revised form: 1 April 2013 / Accepted: 1 April 2013 / Published: 4 April 2013
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Ozonated water has been used as a strong antimicrobial agent against foodborne pathogens. In this study, the combined effect of low level ozonated water and different added components, including 0.2% starch and metal ions (1 mM CuCl2·2H2O and 0.1 mM AgNO3), on inactivation of Escherichia coli O157:H7 and Listeria monocytogenes was investigated. Treatment with 0.4 ppm ozonated water for 30 min resulted in a maximum log reduction in E. coli O157:H7 and L. monocytogenes compared to initial bacterial counts. The log reductions of bacteria in a starch solution containing ozonated water were slightly higher than those in ozonated water alone. Furthermore, the log reductions of E. coli O157:H7 (2.59 and 4.71 log cfu/mL) and L. monocytogenes (2.53 and 4.28 log cfu/mL) in a metal ion solution containing 0.2 and 0.4 ppm ozone for 30 min were significantly higher than those of the water and starch added groups (p < 0.05). These results indicate that a combination of ozonated water and metal ions may be useful as a antimicrobial agent.
Keywords: ozonated water; metal ion; combination; E. coli; L. monocytogenes
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MDPI and ACS Style

Kang, S.-N.; Kim, K.-J.; Park, J.-H.; Lee, O.-H. Effect of a Combination of Low Level Ozone and Metal Ions on Reducing Escherichia coli O157:H7 and Listeria monocytogenes. Molecules 2013, 18, 4018-4025.

AMA Style

Kang S-N, Kim K-J, Park J-H, Lee O-H. Effect of a Combination of Low Level Ozone and Metal Ions on Reducing Escherichia coli O157:H7 and Listeria monocytogenes. Molecules. 2013; 18(4):4018-4025.

Chicago/Turabian Style

Kang, Suk-Nam; Kim, Kui-Jin; Park, Joung-Hyun; Lee, Ok-Hwan. 2013. "Effect of a Combination of Low Level Ozone and Metal Ions on Reducing Escherichia coli O157:H7 and Listeria monocytogenes." Molecules 18, no. 4: 4018-4025.

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