title: Effect of combined function of temperature and water activity on the growth of Vibrio harveyi.
abstract: Vibrio harveyi is considered as a causative agent of the systemic disease, vibriosis, which occurs in many biological fields. The effects of temperatures (12.9-27.1 °C) and water activity (NaCl% 0.6%-3.4%) on V. harveyi were investigated. The behavior and growth characteristics of V. harveyi was studied and modeled. Growth curves were fitted by using Gompertz and Baranyi models, and the Baranyi model showed a better fittness. Then, the maximum growth rates (μmax) and lag phase durations (LPD, λ) obtained from both Gompertz and Baranyi model were modeled as a combination function of temperature and water activity using the response surface and Arrhenius-Davey models for secondary model. The value of r(2), MSE, bias and accuracy factor suggest Baranyi model has better fitness than Gompertz model. Furthermore, validation of the developed models with independent data from ComBase also shown better interrelationship between observed and predicted growth parameter when using Baranyi model.
authors.affiliation: College of Food Science, Sichuan Agricultural University , Yaan, 625014 , China ; Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science & Nutritional Engineering, China Agricultural University , Beijing, 100083 , China.
authors.forename: Kang
authors.initials: K
authors.lastname: Zhou
authors.forename: Meng
authors.initials: M
authors.lastname: Gui
authors.forename: Pinglan
authors.initials: P
authors.lastname: Li
authors.forename: Shaohua
authors.initials: S
authors.lastname: Xing
authors.forename: Tingting
authors.initials: T
authors.lastname: Cui
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Peng
keywords: Vibrio harveyi; modelling; temperature; water activity
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