Use of modified Richards model to predict isothermal and non-isothermal microbial growth

Revista de microbiologia

Teleken, Jhony Tiago¹  Galvão, Alessandro Cazonatto² 

[1] Universidade Federal de Santa Catarina, Florianópolis, Brazil;Universidade do Estado de Santa Catarina, Pinhalzinho, Brazil

关键词: Richards model;    Predictive microbiology;    Non-isothermal regimens.;   

DOI  :  10.1016/j.bjm.2018.01.005

学科分类：农业科学（综合）

来源: Sociedade Brasileira de Microbiologia / Brazilian Society for Microbiology

【 摘 要 】

Mathematical models are often used to predict microbial growth in food products. An important class of these models involves the adaptation of classical sigmoid functions, such as the Gompertz and logistic functions. This study aimed to validate the use of the modified Richards model in various situations, which have not previously been tested. The model was obtained through solving a system of two differential equations and could be applied to both isothermal and non-isothermal environments. To test and validate this model, we used published datasets containing data for the growth of Pseudomonas spp. in fish products. The results obtained after fitting the model showed that it could be effectively used to describe and predict the Pseudomonas growth curves under various temperature regimens. However, the influence of the shape parameter on the growth curve is an issue that needs further evaluation.

【 授权许可】

CC BY-NC