title: Analysis and modeling of the variability associated with UV inactivation of Escherichia coli in apple cider.
abstract: Raw data from validation studies of UV tubes used for nonthermal pathogen reduction in apple cider underwent comprehensive statistical analysis. Data from each tube that demonstrated at least a 5-log reduction of Escherichia coli ATCC 25922, a surrogate for E. coli O157:H7, in each of three trials were used in the analysis. The within- and between-tube variability was calculated for 70 tubes. The mean log reductions of the tubes fit a Beta distribution (Kolmogorov-Smirnov test, 0.0246), and the between-replicate variability followed a logistic distribution (Kolmogorov-Smirnov test, 0.0305). These two distributions can be used together to model UV cider treatment as part of an overall E. coli O157:H7 in cider risk assessment. Examples of codes from @RISK and Analyticato describe these distributions, such as one would find in a quantitative risk assessment, are included.
authors.affiliation: Food Risk Analysis Initiative, Rutgers University, New Brunswick, New Jersey 08901, USA.
authors.forename: S
authors.initials: S
authors.lastname: Duffy
authors.forename: J
authors.initials: J
authors.lastname: Churey
authors.forename: R W
authors.initials: RW
authors.lastname: Worobo
authors.forename: D W
authors.initials: DW
authors.lastname: Schaffner
mesh_terms: D001628:Beverages / Q000382:microbiology*; D015169:Colony Count, Microbial; D004926:Escherichia coli / Q000254:growth & development / Q000528:radiation effects*; D005514:Food Irradiation / Q000379:methods; D008954:Models, Biological; D015203:Reproducibility of Results; D018570:Risk Assessment; D019685:Rosales; D013223:Statistics as Topic; D014466:Ultraviolet Rays