Reliable microbial fermentation solutions for recombinant proteins, peptides and biologics
Developing recombinant proteins, peptide therapeutics or other biologics requires more than selecting the right expression system. As a project progresses beyond initial shake flask studies, maintaining consistent microbial growth, protein yield and product quality becomes increasingly important.
Variables such as pH, dissolved oxygen, temperature, agitation and nutrient availability can all influence the performance of a microbial fermentation process. Without precise control, researchers may experience batch-to-batch variability, inconsistent expression levels and challenges when scaling from laboratory research to pilot-scale production.
LabFlow™ bioprocessing solutions support researchers at every stage of microbial cultivation and fermentation - from early shake flask screening to controlled bioreactor processes and downstream product recovery.
Moving Beyond Shake Flask Cultivation
Shake flasks provide a flexible and cost-effective starting point for screening microbial strains, evaluating growth conditions and conducting early protein expression studies. However, they offer limited control over critical process parameters.
As cell density and oxygen demand increase, transferring the process to a controlled bioreactor allows researchers to actively monitor and adjust conditions throughout the fermentation run.
A well-controlled microbial bioreactor can help researchers:
- Maintain the optimal pH for cell growth and protein expression
- Control dissolved oxygen through agitation and aeration
- Regulate temperature throughout the fermentation process
- Implement accurate nutrient and substrate feeding strategies
- Support high-cell-density fed-batch fermentation
- Improve process consistency and batch-to-batch reproducibility
- Generate reliable data for future bioprocess scale-up
This increased level of control can help identify the conditions that support strong microbial growth, improved protein yield and more reproducible fermentation performance.
Supporting a Range of Microbial Fermentation Applications
LabFlow™ fermentation and bioprocessing equipment can support a wide range of research, process development and pilot-scale applications.
Recombinant protein expression
Microbial expression systems are widely used for producing recombinant proteins for research, diagnostic, industrial and therapeutic applications. Controlled fermentation helps researchers optimise growth conditions, induction strategies and harvest timing to improve the consistency of recombinant protein production.
Peptide and GLP-1 production
Microbial fermentation may form part of the production workflow for recombinant peptides and peptide precursors, including GLP-1-related research and development. Precise feeding, oxygen control and temperature management can be particularly important when optimising peptide expression and recovery.
E. coli fermentation
Escherichia coli is one of the most commonly used microbial hosts for recombinant protein expression. Its rapid growth and well-established expression systems make it suitable for many research and production applications. LabFlow™ bioreactors provide the process control required to optimise E. coli cultivation, induction and high-cell-density fermentation.
Yeast cultivation
Yeast expression systems can provide an effective alternative for proteins that require more complex folding or processing. Controlled yeast fermentation requires careful management of aeration, feeding, pH and biomass accumulation to maintain consistent culture performance.
High-cell-density fed-batch fermentation
Fed-batch fermentation enables nutrients to be added progressively rather than supplied entirely at the beginning of a run. This approach can help manage substrate concentration, control microbial growth and support higher cell densities.
Reliable feeding and process monitoring are therefore essential when developing a high-cell-density fermentation process for recombinant protein or peptide production.
Biologics and ADC development workflows
Microbial systems may also support the production of recombinant proteins, enzymes, peptides and other intermediates used within broader biologics and antibody-drug conjugate development workflows. Scalable fermentation equipment helps establish a reproducible upstream process before transferring material into downstream purification and characterisation stages.
Creating an Integrated Bioprocess Workflow
An efficient protein expression workflow extends beyond the bioreactor. Each stage should connect logically with the next to minimise variability, simplify process transfer and improve productivity.
A typical microbial bioprocess workflow may include:
- Strain and media screening: Evaluating microbial strains, expression constructs and culture conditions in shake flasks.
- Seed culture preparation: Using an incubator shaker to produce a consistent inoculum for bioreactor cultivation.
- Controlled fermentation: Transferring the culture to a bench-top bioreactor for precise control of pH, dissolved oxygen, temperature, agitation, aeration and feeding.
- Process optimisation and scale-up: Refining fermentation parameters and transferring the process to a larger working volume while maintaining comparable culture conditions.
- Harvest and downstream processing: Recovering, concentrating and purifying the target product using technologies such as tangential flow filtration.
By considering the complete workflow from the beginning, researchers can reduce unnecessary process changes and create a clearer path from early research to pilot-scale bioprocess development.
Why Researchers Choose LabFlow™
LabFlow™ bioprocessing solutions are designed to help laboratories establish reliable, scalable and practical microbial fermentation workflows.
Key benefits include:
- Precise control of pH, dissolved oxygen, temperature, agitation and feeding
- Scalable solutions for research, process development and pilot-scale fermentation
- Support for E. coli, yeast and other microbial cultivation applications
- Integrated upstream and downstream bioprocessing technologies
- Flexible configurations to suit different organisms, working volumes and process requirements
- Local application and technical support across Australia and New Zealand
- Installation and operator training
- A four-year extended warranty for added confidence
Selecting the Right Fermentation System
The most suitable bioreactor configuration will depend on your organism, process objectives and future scale-up requirements. Important considerations include:
- Microbial strain or expression host
- Required working volume
- Batch or fed-batch operation
- Oxygen transfer requirements
- Agitation and aeration strategy
- Number and type of feed additions
- Sampling and monitoring requirements
- Data collection and process automation
- Downstream concentration and purification needs
- Anticipated scale-up pathway
Selecting equipment that supports both current research and future development can make it easier to transfer a successful protein expression process into larger-scale production.
Planning Your Next Protein Expression or Fermentation Project?
Whether you are establishing a new recombinant protein expression workflow, optimising an existing E. coli or yeast fermentation process, or preparing to scale from shake flasks to a controlled bioreactor, the right equipment and application support can make a meaningful difference.
Our bioprocess specialists can help you assess your application, working volume, process parameters and scale-up objectives to identify the most suitable solution.
Explore the complete LabFlow™ bioprocessing portfolio and discover how we can support your next microbial fermentation project.
