title: Inactivation of Escherichia coli O157:H7, Salmonella typhimurium and Listeria monocytogenes in apple juice with gaseous ozone.
abstract: This research was initiated to assess the efficacy of gaseous ozone for inactivation Escherichia coli O157:H7, Salmonella typhimurium and Listeria monocytogenes in apple juice. Juice samples with solids content of 18, 36, and 72 °Brix inoculated with a culture cocktail of three foodborne pathogens were treated with gaseous ozone at a flow rate of 3.0 L/min and an ozone generation rate of 0.10, 0.90, 3.51, and 5.57 g/h for 0.5, 1, 5, and 10 min, respectively. The inactivation kinetics of gaseous ozone on foodborne pathogens conformed to the Weibull model. The time required to achieve a 5 log reduction (t(5d)) was estimated using the parameters of the Weibull model. The t(5d) increased with increasing solids content of apple juice. The ozone generation rate did not impart a significant effect (p > 0.05) on t(5d). Gaseous ozone is effective at inactivating foodborne pathogens in apple juice but the efficacy is dependent on the solids content of the juice sample.
authors: School of Food Science and Technology, Chung-Ang University, 72-1 Nae-ri, Daedeok-myeon, Anseong-si, Gyeonggi 456-756, South Korea.
authors: Mi-Ran
authors: MR
authors: Choi
authors: Qian
authors: Q
authors: Liu
authors: Sun-Young
authors: SY
authors: Lee
authors: Ju-Hwan
authors: JH
authors: Jin
authors: Sangryeol
authors: S
authors: Ryu
authors: Dong-Hyun
authors: DH
authors: Kang
mesh_terms: D001628:Beverages / Q000382:microbiology*; D019453:Escherichia coli O157 / Q000187:drug effects* / Q000502:physiology; D005519:Food Preservation / Q000379:methods*; D005740:Gases / Q000494:pharmacology*; D008089:Listeria monocytogenes / Q000187:drug effects* / Q000502:physiology; D027845:Malus / Q000382:microbiology; D050296:Microbial Viability / Q000187:drug effects*; D010126:Ozone / Q000494:pharmacology*; D012486:Salmonella typhimurium / Q000187:drug effects* / Q000502:physiology
chemical_list: D005740:Gases; D010126:Ozone