title: The application of a log-logistic model to describe the thermal inactivation of Clostridium botulinum 213B at temperatures below 121.1 degrees C.
abstract: In this work, the death of Clostridium botulinum 213B was measured at temperatures between 101 degrees C and 121 degrees C. It was found that at all temperatures tested, survivor curves deviated from log-linearity which prevented their description using traditional first order kinetics. The survivor curves were better described using a vitalistic approach and the log-logistic transformation proposed by Cole et al. (1993). A single equation was derived to describe all survivor curves over the temperature range tested and a comparison of predicted and measured data showed good correlation. The implications of the use of the vitalistic approach to the validity of the 'minimum botulinum cook' is discussed.
authors.affiliation: Department of Microbiology, Unilever Research, Sharnbrook, Beds, UK.
authors.forename: W A
authors.initials: WA
authors.lastname: Anderson
authors.forename: P J
authors.initials: PJ
authors.lastname: McClure
authors.forename: A C
authors.initials: AC
authors.lastname: Baird-Parker
authors.forename: M B
authors.initials: MB
authors.lastname: Cole
mesh_terms: D003014:Clostridium botulinum / Q000254:growth & development*; D016014:Linear Models; D016015:Logistic Models; D008433:Mathematics; D013171:Spores, Bacterial / Q000254:growth & development; D013696:Temperature