Effect of acidified sodium chlorite treatment on chicken carcases processed in South Australia.
A trial on the effectiveness of acidified sodium chlorite (ASC) on Salmonella and Campylobacter was undertaken on chicken carcases after they exited the screw chiller of a commercial premises in Adelaide, Australia. On untreated carcases mean log10 total viable count (25 degrees C) was 2.78/cm2 compared with 1.23/cm2 on treated carcases. Prevalence of E. coli, Salmonella and Campylobacter was 100%, 90% and 100% respectively, on untreated carcases and 13%, 10% and 23% respectively, on treated carcases. The distributions of E. coli, Salmonella and Campylobacter (mean log10 of positive samples) from untreated carcases were 1.55, -1.80 and 1.59/cm2 respectively, and -0.64, -1.85 and -2.21/cm2 respectively, on treated carcases. On untreated carcases S. Sofia and S. Infantis were isolated from 73% and 37% of carcases, respectively; only S. Sofia was isolated from treated carcases. The significant reductions in both prevalence and concentration demonstrated in the present trial indicate that ASC is a risk management option immediately available to the poultry industry.
Sexton
Margaret
M
Meat Hygiene Unit, Primary Industries and Resources, 33 Flemington Street, Glenside, Adelaide 5065, Australia. sexton.margaret2@saugov.sa.gov.au
Raven
Geoff
G
Holds
Geoff
G
Pointon
Andrew
A
Kiermeier
Andreas
A
Sumner
John
J
D000818:Animals; D002167:Campylobacter / Q000187:drug effects* / Q000254:growth & development; D002645:Chickens / Q000382:microbiology*; D002712:Chlorides / Q000494:pharmacology*; D015169:Colony Count, Microbial; D004202:Disinfectants / Q000494:pharmacology*; D004926:Escherichia coli / Q000187:drug effects* / Q000254:growth & development; D005506:Food Contamination / Q000517:prevention & control; D005511:Food Handling / Q000379:methods; D005516:Food Microbiology; D012308:Risk Management; D012475:Salmonella / Q000187:drug effects* / Q000254:growth & development; D013021:South Australia
D002712:Chlorides; D004202:Disinfectants; C001599:chlorite