Modeling the pressure inactivation dynamics of Escherichia coli

Brazilian Journal of Medical and Biological Research

K. Yamamoto¹  M. Matsubara¹  S. Kawasaki¹  M.l. Bari¹  S. Kawamoto¹ 

[1] ,National Food Research InstituteIbaraki,Japan

关键词: Predictive microbiology;    Pressure;    Escherichia coli;    Inactivation;    Model;   

DOI  :  10.1590/S0100-879X2005000800014

来源: SciELO

【 摘 要 】

Escherichia coli, as a model microorganism, was treated in phosphate-buffered saline under high hydrostatic pressure between 100 and 300 MPa, and the inactivation dynamics was investigated from the viewpoint of predictive microbiology. Inactivation data were curve fitted by typical predictive models: logistic, Gompertz and Weibull functions. Weibull function described the inactivation curve the best. Two parameters of Weibull function were calculated for each holding pressure and their dependence on holding pressure was obtained by interpolation. With the interpolated parameters, inactivation curves were simulated and compared with the experimental data sets.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License