Effect of combined function of temperature and water activity on the growth of Vibrio harveyi
Braz. j. microbiol
;
43(4): 1365-1375, Oct.-Dec. 2012. ilus, graf, tab
Artigo
em Inglês
| LILACS
| ID: lil-665821
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 ºC) 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 r², 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.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Temperatura
/
Vibrio
/
Vibrioses
/
Crescimento Bacteriano
/
Ecossistema
Tipo de estudo:
Estudos de avaliação
/
Estudo prognóstico
Idioma:
Inglês
Revista:
Braz. j. microbiol
Assunto da revista:
Microbiologia
Ano de publicação:
2012
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
China
Instituição/País de afiliação:
China Agricultural University/CN
/
Sichuan Agricultural University/CN
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