Study on Dynamic Model Construction and Analysis Method of Bacteria-algae Co-culture

DOI: https://doi.org/10.62517/jmhs.202305315

Author(s)

Yuxing Yao

Affiliation(s)

WLSA Shanghai Academy, Shanghai, China

Abstract

To investigate the dynamic changes in growth and product synthesis of a mixed culture of Rhodotorula glutinis and Chlorella vulgaris, this study utilized fermentation data to analyze the rules and preliminary results of the microbial-algal symbiotic system. Employing Matlab, the author fitted a mathematical model proposed by predecessors, seeking parameters to establish a dynamic model for microbial fermentation. This model not only characterized parameter significance but also shed light on interactions, energy transfer mechanisms, and natural regulation balance during symbiotic fermentation. Results revealed that, under the influence of algae's photosynthetic carbon fixation, bacteria exhibited secondary growth, coupled with lipid synthesis and cell growth. The mixed culture model demonstrated a significant increase of 25.9% in biomass and 42.1% in oil content (reaching 30.694 g/L and 14.54 g/L, respectively). These findings suggest the model's potential as a theoretical guide for optimizing mixed culture fermentation processes.

Keywords

Bacteria and Algae Symbiosis; Mathematical Model to Reference; Dynamics; Fermentation Control Optimization

References

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