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Microbial Enzyme Production: Critical Bottlenecks and Integrated Engineering Solutions.

Poulami Maji¹, Anannya Sengupta¹, Paramita Ghosh¹

¹Department of Biotechnology, Brainware University, Barasat, West Bengal, India.

Journal of Basic Microbiology

|July 7, 2026

Summary

This review explores strategies to overcome limitations in microbial enzyme production, focusing on genetic and bioprocess engineering to improve efficiency and reduce costs for industrial applications.

Keywords:

bioprocess intensification enzyme immobilization high‐cell‐density fermentation industrial biocatalysis microbial enzyme production scale‐up secretion capacity strain engineering

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Area of Science:

Biotechnology and Industrial Microbiology
Biochemical Engineering

Background:

Microbial enzyme production faces significant limitations including low secretion capacity, poor operational stability, and high downstream processing costs (45-65%).
These challenges hinder the cost-effective large-scale manufacturing of enzymes essential for diverse industrial applications.

Purpose of the Study:

To critically review integrated genetic, physiological, and bioprocess engineering strategies for overcoming microbial enzyme production bottlenecks.
To provide a comparative analysis of these strategies across major enzyme classes (cellulases, proteases, lipases, amylases).

Main Methods:

Analysis of multiplex genome engineering, adaptive laboratory evolution, process intensification, continuous production, and enzyme immobilization techniques.
Techno-economic assessment of integrated versus isolated intervention strategies.

Main Results:

Multiplex genome engineering yields 3-8 fold productivity increases; adaptive laboratory evolution improves robustness by 15-30%.
Process intensification/continuous production reduces processing times by 40-55%, while immobilization allows 50-200 cycles with 65-85% activity retention.
Coordinated interventions demonstrate multiplicative gains compared to isolated strategies.

Conclusions:

Integrated engineering approaches are crucial for economically viable microbial enzyme production.
Future research should focus on systems-level secretion analysis, AI-driven enzyme engineering, and integrated manufacturing platforms.