Improving PHB production in cyanobacteria: Modeling the optimal light regime for growth
Year: 2025
Type: article
Abstract: The production of bioplastics, such as polyhydroxybutyrate (PHB), using cyanobacteria offers a sustainable alternative to conventional plastics. However, achieving economically viable production requires optimizing biomass growth. This study examined four growth models: Gompertz (empirical growth), Baranyi-Roberts (biologically dependent), Monod (nutrient dependent), and Aiba (irradiance dependent). The results indicate that a light-based model more accurately describes cyanobacterial growth and shows potential for optimizing light regimes. Additionally, an estimator was proposed to assess the potential PHB yield within the given biomass. Experiments were conducted to correlate photosynthetic efficiency with biomass production, providing deeper insights into the effects of light on growth. These findings support the development of optimized cultivation strategies, ultimately improving the economic viability of cyanobacteria-based bioplastics.
Source: New Biotechnology
Authors: I. Perez Couñago, J.M. Fernandez Montenegro, S. Iglesias Moreira, F. Rodriguez Lorenzo, M. Placer Lorenzo, P. Villar Sola, E. Pancorbo González, J. Illade Quinteiro, L. Herrero Castilla, J.A. Álvarez Rodríguez, B. Altamira Algarra, E. Gonzalez Flo, J. Garcia, F. Guedes, M. Lopez-Garcia, S. Muiños-Landin
Language: English
Subfield: Biomaterials
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,670
OpenAlex ID: W4411371463