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Efficiency Optimization in Fermentation
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Progress is not how we grow; it is about how we make a difference in lives of others. This is our guiding principle at Yashraj Biotechnology Limited (YBL)
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Efficiency Optimization in Fermentation
System: Pichia pastoris
Scale: Lab → Pilot → Manufacturing (100 L)
Background
A client’s recombinant protein fermentation process required ~15 days per batch, including inoculum preparation, secondary inoculum, and production fermentation at 100 L scale. Extended cycle times limited throughput, increased costs, and introduced contamination risks. The goal was to shorten batch cycles while maintaining product quality and reproducibility.
Key Challenges
- Long fermentation process (15 days from inoculum to harvest)
- High operational costs due to extended batch times
- Contamination issues affecting reproducibility
Our Approach
- Inoculum Strategy: Increased inoculum percentage and inoculated at later lag phase to accelerate growth.
- Oxygen Transfer Control: Adjusted aeration and agitation to maintain DO >35% across scales.
- Feeding Optimization: Implemented nutrient feeding strategy to reduce metabolic stress and improve growth kinetics.
- Downstream Streamlining: Simplified recovery steps and introduced contamination control checkpoints.
Results
| Parameter | Initial | Optimized |
|---|---|---|
| Batch Time | 15 days | 9 days |
| Throughput | Baseline | Increased |
| Efficiency | Limited | Significantly improved |
Key Insight
For Pichia pastoris fermentation, inoculum strategy and oxygen transfer control are critical levers for reducing batch duration. Shorter cycles not only improve productivity but also enhance reproducibility and accelerate time-to-market.
