Modeling the pressure inactivation dynamics of Escherichia coli

被引：14

作者：

Yamamoto, K ^{[1
]}

Matsubara, M ^{[1
]}

Kawasaki, S ^{[1
]}

Bari, ML ^{[1
]}

Kawamoto, S ^{[1
]}

机构：

[1] Natl Food Res Inst, Food Piezotechnol Team, Tsukuba, Ibaraki 3058642, Japan

来源：

BRAZILIAN JOURNAL OF MEDICAL AND BIOLOGICAL RESEARCH | 2005年 / 38卷 / 08期

关键词：

predictive microbiology; pressure; Escherichia coli; inactivation; model;

D O I：

10.1590/S0100-879X2005000800014

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

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.

引用

页码：1253 / 1257

页数：5

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