Fermentation

Fermentation encompasses both the anaerobic metabolic process converting sugars to acids, gases, or alcohol through microbial action, and more broadly in biopharmaceutical contexts, any large-scale cultivation of microorganisms or cells for producing therapeutic proteins, antibodies, vaccines, enzymes, or other biologic products. Industrial fermentation employs bioreactors providing controlled environments optimising microbial or cell growth and product formation.

The biopharmaceutical industry operates sophisticated fermentation facilities producing therapeutic proteins in bacterial, yeast, or fungal systems. Bacterial fermentation, particularly using Escherichia coli, produces numerous therapeutics including insulin, growth hormone, and various enzymes. Process development optimises media composition, feeding strategies, induction timing, and environmental conditions. Fermentation scale-up requires addressing mass transfer limitations, heat removal challenges, and maintaining homogeneous conditions. Monitoring employs online sensors tracking biomass, substrate concentrations, product titres, and metabolic by-products enabling real-time process control. As continuous fermentation processes emerge and synthetic biology enables novel biosynthetic pathways, fermentation technology continues advancing supporting efficient, sustainable production.