6533b7d7fe1ef96bd1269084
RESEARCH PRODUCT
Modelling Bacterial Dynamics in Food Products: Role of Environmental Noise and Interspecific Competition
Antonio PanebiancoDavide ValentiAlessandro GiuffridaFilippo GiarratanaBernardo SpagnoloZiino Graziellasubject
Stochastic Modelingeducation.field_of_studyPopulation DynamicPopulationStatistical MechanicNoise in Biological SystemsContext (language use)Statistical mechanicsInterspecific competitionSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)Field (geography)Stochastic differential equationNoiseNoise-Induced EffectBiological systemEnvironmental noiseeducationMathematicsdescription
In this paper we review some results obtained within the context of the predictive microbiology, which is a specific field of the population dynamics. In particular we discuss three models, which exploit tools of statistical mechanics, for bacterial dynamics in food of animal origin. In the first model, the random fluctuating behaviour, experimentally measured, of the temperature is considered. In the second model stochastic differential equations are introduced to take into account the influence of physical and chemical variables, such as temperature, pH and activity water, subject to deterministic and random variations. The third model, which is an extended version of the second one, neglects the environmental fluctuations, and concentrates on the role of the interspecific bacterial interactions. The comparison between expected results and observed data indicates that the presence of noise sources and interspecific bacterial interactions improves the predictive features of the models analyzed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-01-01 | Journal of Modern Physics |