Use of modified Richards model to predict isothermal and non-isothermal microbial growth
Braz. j. microbiol
;
49(3): 614-620, July-Sept. 2018. tab, graf
Article
in English
| LILACS
| ID: biblio-951815
ABSTRACT
Abstract 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.
Full text:
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Index:
LILACS (Americas)
Main subject:
Pseudomonas
/
Kinetics
Type of study:
Prognostic study
/
Risk factors
Limits:
Animals
Language:
English
Journal:
Braz. j. microbiol
Journal subject:
Microbiology
Year:
2018
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Federal de Santa Catarina/BR
/
Universidade do Estado de Santa Catarina/BR
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