Engineering Escherichia coli Biofilms for Curcumin Production
Ana Azevedo1,2, Rita Teixeira-Santos1,2, Luciana C Gomes1,2
1LEPABE-Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal.
Molecules (Basel, Switzerland)
|May 14, 2025
Summary
Engineered Escherichia coli biofilms efficiently produce curcumin, a valuable compound. This study demonstrates biofilms yield significantly higher curcumin than planktonic cells, validating their potential for metabolic engineering applications.
Area of Science:
- Biotechnology
- Metabolic Engineering
- Microbial Production
Background:
- Biofilms offer novel platforms for producing valuable compounds.
- Escherichia coli biofilms were engineered to express a curcumin biosynthetic pathway.
Purpose of the Study:
- To assess the capacity of Escherichia coli biofilms for curcumin production.
- To evaluate the effects of chemical induction and temperature on biofilm formation and curcumin yield.
Main Methods:
- Engineered E. coli biofilms were cultured in microtiter plates.
- Curcumin production was induced using IPTG and ferulic acid (FA) at varying concentrations.
- Biofilm formation, cell counts, and curcumin levels were measured at different time points and temperatures.
Main Results:
- Biofilms produced up to 10-fold higher curcumin levels compared to planktonic cells.
- Optimal specific curcumin production (2.2 fg·cell-1) was achieved with 8 mM FA.
- Incubation temperature (26°C vs. 30°C) did not significantly impact curcumin production.
Conclusions:
- Escherichia coli biofilms demonstrate significant potential for enhanced curcumin production via metabolic engineering.
- Biofilm systems provide a robust platform for expressing complete exogenous biosynthetic pathways.
- Optimized induction conditions, particularly ferulic acid concentration, are key for maximizing compound yield.
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