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Flocculation in brewing yeasts: a computer simulation study
1Departament de Matemàtica Aplicada III, Edifici ESAB, Universitat Politècnica de Catalunya, Campus del Baix Llobregat, Avda. Canal Olímpic, 08860-Castelldefels, Barcelona, Spain. marta.ginovart@upc.edu
Bio Systems
|October 20, 2005
Summary
A new yeast flocculation simulator, INDISIM-FLOC, evaluated two models. The cascade model showed better agreement with experimental data than the addition model.
Area of Science:
- Microbiology
- Biophysics
- Computational Biology
Background:
- Yeast flocculation is a crucial process in industrial biotechnology.
- Understanding the mechanisms of yeast flocculation is essential for optimizing fermentation processes.
- Existing models for yeast flocculation vary in their predictive capabilities.
Purpose of the Study:
- To evaluate the predictive performance of two distinct yeast flocculation models: the addition model and the cascade model.
- To compare the simulation outputs with available experimental data for qualitative agreement.
Main Methods:
- Utilized INDISIM-FLOC, an individual-based simulator derived from INDISIM.
- Simulated yeast flocculation using both the Calleja addition model and the Stratford cascade model.
- Assessed the qualitative agreement between simulation results and experimental observations.
Main Results:
- The INDISIM-FLOC simulator was employed to test the predictions of both models.
- The cascade model demonstrated a superior qualitative agreement with experimental data compared to the addition model.
- This suggests the cascade model offers a more accurate representation of yeast flocculation dynamics.
Conclusions:
- The cascade model provides a better qualitative description of yeast flocculation.
- INDISIM-FLOC is a valuable tool for assessing and comparing yeast flocculation models.
- Further research may refine the cascade model for quantitative predictions.