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- W2469377867 abstract "Throughout the whole food processing and distribution chain, an accurate assessment and control of microbiological food safety is indispensable to avoid large outbreaks of foodborne diseases. For this reason, mathematical models are developed in predictive microbiology to describe the growth and survival of food spoiling and pathogenic microorganisms as a function of the environmental conditions during food processing and distribution. Traditionally, these models are representative for the planktonic growth of axenic microbial cultures in perfectly mixed liquid media. However, most food products are characterised by a semi-solid structure, where the contaminating cells grow out as colonies. Diffusion limitations emerge in these colonies due to the high local cell density. Hence, it is most appropriate to simulate microbial colonies at a microscopic level, considering the cell as basic modelling unit in an individual-based modelling approach. Within this respect, the MICRODIMS model has been developed at the BioTeC+ research group. However, over the last years, it became clear that the implementation of this individual-based model in the standard Repast Simphony toolkit is rather slow for the simulation of mature colonies containing a large number of cells. For this reason, MICRODIMS has been ported to the TransProg library, which uses modern general-purpose multicore and multiprocessor computers to their fullest potential. This transfer enables the simulation of mature colony dynamics in three dimensions. In this paper, the branched morphology of colonies growing on the surface of a food substrate is investigated. It is demonstrated that the emergence of this pattern is dependent on the thickness of the food substrate and structural heterogeneities at the food surface." @default.
- W2469377867 created "2016-07-22" @default.
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- W2469377867 date "2016-04-03" @default.
- W2469377867 modified "2023-09-25" @default.
- W2469377867 title "INDIVIDUAL-BASED MODELLING OF MICROBIAL COLONY DYNAMICS ON FOOD SURFACES IN A PARALLEL SIMULATOR" @default.
- W2469377867 hasPublicationYear "2016" @default.
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