Application of antimicrobial ice for reduction of foodborne pathogens (Escherichia coli O157:H7, Salmonella Typhimurium, Listeria monocytogenes) on the surface of fish.
OBJECTIVE
The efficacy of antimicrobial ice was evaluated for the reduction of foodborne pathogens on the surface of fish.


RESULTS
Antimicrobial ice containing chlorine dioxide (ClO2) was utilized to control foodborne pathogens in laboratory media and on fish skin. Escherichia coli O157:H7, Salmonella serotype Typhimurium and Listeria monocytogenes strains were treated with antimicrobial ice for 30 min on plates of selective agar and for 120 min on fish skin at room temperature, and then incubated for enumeration. After treatment with 100 ppm ClO2 for 30 min, 5.4, 4.4 and 3.2 log10 reduction was obtained with E. coli O157:H7, Salm. Typhimurium and L. monocytogenes on laboratory media, respectively. When antimicrobial ice (100 ppm ClO2) was applied to fish skin for 120 min, total reduction of E. coli O157:H7, Salm. Typhimurium and L. monocytogenes was 4.8, 2.6 and 3.3 log10, respectively.


CONCLUSIONS
The initial load of foodborne pathogens was reduced by antimicrobial ice and the lowered microbial level was maintained during treatment.


CONCLUSIONS
The application of antimicrobial ice is a simple and effective method for the safe preservation of fish.
Department of Food Science and Human Nutrition, Washington State University, Pullman 99164-6376, USA.
J-H
JH
Shin
S
S
Chang
D-H
DH
Kang
D000818:Animals; D017606:Chlorine Compounds / Q000494:pharmacology; D015169:Colony Count, Microbial; D004202:Disinfectants / Q000008:administration & dosage* / Q000494:pharmacology; D019453:Escherichia coli O157 / Q000187:drug effects / Q000254:growth & development; D005399:Fishes / Q000382:microbiology*; D005516:Food Microbiology; D005519:Food Preservation / Q000379:methods*; D007053:Ice; D008089:Listeria monocytogenes / Q000187:drug effects / Q000254:growth & development; D010087:Oxides / Q000494:pharmacology; D012486:Salmonella typhimurium / Q000187:drug effects / Q000254:growth & development; D017747:Seafood / Q000382:microbiology; D012867:Skin / Q000382:microbiology
D017606:Chlorine Compounds; D004202:Disinfectants; D007053:Ice; D010087:Oxides; C025109:chlorine dioxide