"samelis" - 1 õppematerjal

Liha töötlemine

and a recirculation water system, was effec- strains that may be able to adapt and develop tive in reducing microbial contamination on acid resistance. Subsequently, such strains carcasses and gained approval by FSIS for may colonize equipment surfaces, recontami- commercial use in beef slaughter (Sofos and nate carcasses, and resist subsequent decon- Smith 1998). Of the aforementioned in-plant tamination treatments (Samelis and Sofos decontamination interventions, water/steam 2003, 2005). Berry and Cutter (2000) showed pasteurization and spraying with lactic acid that acid-adapted E. coli O157:H7 was more are considerably more effective in reducing resistant against acetic acid sprays than non- TCC and E. coli than water-washing (Gill adapted cells. Similarly, acid-habituated E. and Landers 2003a). Furthermore, combina- coli O157:H7 was more resistant to spray-