Efficacy of aqueous ozone for the decontamination of Escherichia coli O157:H7 and Salmonella on raspberries and strawberries

Katherine L. Bialka, Ali Demirci

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The efficacy of ozone as a water additive for washing raspberries and strawberries was investigated. Pathogen-inoculated fruits were treated with aqueous ozone concentrations of 1.7 to 8.9 mg/liter at 20°C for 2 to 64 min, with an aqueous ozone concentration of 21 mg/liter at 4°C for 64 min, or with water as a control. Maximum pathogen reductions on raspberries were 5.6 and 4.5 log CFU/g for Escherichia coli O157:H7 and Salmonella, respectively, at 4°C, whereas reductions on strawberries were 2.9 and 3.3 log CFU/g for E. coli O157:H7 and Salmonella, respectively, at 20°C after 64 min. Washing with water (sparging with air as control) resulted in reductions of approximately 1 log CFU/g. The results presented here indicate that aqueous ozone may be useful as a decontaminant for small fruits.

Original languageEnglish (US)
Pages (from-to)1088-1092
Number of pages5
JournalJournal of food protection
Volume70
Issue number5
DOIs
StatePublished - May 2007

All Science Journal Classification (ASJC) codes

  • Food Science
  • Microbiology

Fingerprint Dive into the research topics of 'Efficacy of aqueous ozone for the decontamination of Escherichia coli O157:H7 and Salmonella on raspberries and strawberries'. Together they form a unique fingerprint.

Cite this