Abstract
“Blown pack” spoilage is primarily caused by Clostridium estertheticum. The primary source of contamination is probably pelts, faeces and soil during opening cuts and de-hiding. Peroxyacetic acid (POAA) based fogs are commonly included in an abattoir's routine cleaning process. Hydrogen peroxide (H2O2) is a powerful oxidizing agent that penetrates microbe cell walls causing cell death. In this study, we compared the ability of H2O2 and OXYSAN ZS (POAA containing 1-hydroxyethylidine-1,1-diphosphonic acid as a stabilizer) in different formats to inactivate C. estertheticum spores. Hydrogen peroxide treatment using Phytagel™ gel as carrier was effective on fleece against both naturally contaminating microflora and C. estertheticum spores. This is the first time an antimicrobial treatment has been shown to inactivate C. estertheticum spores on such a complex and highly contaminated matrix. Both H2O2 and OXYSAN ZS treatments inactivated C. estertheticum spores on stainless steel indicating their potential use as an in-plant decontamination procedure or inclusion in routine in-process cleaning.
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