Membrane damage and leakage of intracellular UV-materials of Salmonella spp. and Escherichia coli O157:H7 bacteria in apple juice following thermal-death-time (TDT) disk and high hydrostatic pressure (HHP) treatments at 23oC, 45 oC, 50 oC, 55 oC, and 60 oC C for 4 min and 350 MPa at 25 oC , 35 oC, and 45 oC for 20 min were investigated. Leakage of intracellular UV-materials and ATP of TDT disk injured cells were lower than the values determined from HHP-treated cells. Recovery of TDT injured cells occurred faster than HHP-treated cells during storage of treated samples at 25oC. The results of this study indicate that HHP treatment of apple juice at 350 MPa (30 oC) for 20 min and TDT disk at 55 and 60C and immediate storage at 5oC will complete inactivation and recovery of injured bacteria.

Cellular damage of<i> Escherichia coli</i> O157:H7 and <i>Salmonella</i> spp. in apple juice treated with high hydrostatic pressure and thermal death time disks

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Cellular damage of Escherichia coli O157:H7 and Salmonella spp. in apple juice treated with high hydrostatic pressure and thermal death time disks