Microbial engineering for the production of C₂-C₆ organic acids

Area of Science:

• Biotechnology
• Metabolic Engineering
• Synthetic Biology

Background:

• Organic acids are vital industrial compounds, traditionally produced via chemical synthesis facing resource and environmental challenges.
• Microbial cell factories present a sustainable alternative for organic acid production, but face metabolic regulation challenges limiting productivity.
• Existing metabolic engineering strategies aim to overcome these limitations for efficient organic acid biosynthesis.

Purpose of the Study:

• To review recent advances in metabolic engineering strategies for producing C2-C6 organic acids.
• To provide insights into the application and optimization of these strategies.
• To discuss future challenges and opportunities in microbial organic acid production.

Main Methods:

• Metabolic engineering approaches including enzyme efficiency enhancement, pathway balancing, metabolic flux strengthening, network optimization, and substrate utilization.
• Reprogramming microbial cell factories for targeted organic acid biosynthesis.
• Analysis of strategies for producing various classes of organic acids (C2-C6).

Main Results:

• Successful application of diverse metabolic engineering strategies to enhance organic acid production in microbial systems.
• Demonstrated improvements in enzyme catalysis, pathway regulation, metabolic flux, and substrate utilization.
• Advancements in the production of monocarboxylic acids, hydroxy carboxylic acids, amino carboxylic acids, dicarboxylic acids, and polymer precursors.

Conclusions:

• Metabolic engineering is a powerful tool for sustainable organic acid production, offering alternatives to chemical synthesis.
• Strategic implementation of metabolic engineering approaches is crucial for maximizing productivity and minimizing byproducts.
• Continued innovation in microbial engineering and biorefinery development is essential for future advancements.