How to choose the right biodigester
Cell type and culture requirements: Different cells have different requirements for the culture environment. For example, suspension cells and walled cells have different sensitivity to mixing and shear, so the appropriate type of fermenter should be selected according to cell characteristics.
Cultivation scale: From small laboratory-scale fermenters to large-scale fermenters for industrial production, the selection should take into account the current and future production needs to avoid waste of resources or production bottlenecks due to mismatch in scale.
Operational Flexibility: Consider whether the fermenter can adapt to a variety of culture conditions, such as temperature, pH, dissolved oxygen, etc. adjustment range, as well as whether it is easy to operate and maintain.
Automation and control capability: Modern cell fermenters are usually equipped with advanced control systems that can automatically monitor and adjust culture parameters, reduce human error, and improve culture stability and reproducibility.
Cost-effectiveness: This includes initial investment, operating costs (e.g. energy consumption, maintenance costs) and long-term productivity. Single-use fermenters, while having a higher initial investment, offer significant advantages in terms of reduced risk of contamination and increased production flexibility.
Regulatory & Compliance: In a GMP environment, the fermenter of choice must meet relevant regulatory standards, including material compatibility, cleaning and sanitization procedures, data integrity and traceability.
Technical Evaluation: Perform a detailed technical evaluation of the screened fermenters based on key considerations.
Verification and optimization: In actual use, verify the performance of the fermenter, and make necessary adjustments and optimization based on experimental or production feedback.
The main types of fermenters
The main types of fermenters are stirred, fixed bed/fluidized bed, rotating wall and single-use fermenters. Each type has its specific advantages and disadvantages. For example, stirred fermenters are suitable for suspension cell culture but may cause damage to filamentous bacteria; fixed bed/fluidized bed fermenters are suitable for adherent cell culture with a simple structure but poor heat transfer; rotating wall fermenters are suitable for cell culture that requires a low-shear environment, with complex operation and high cost; single-use fermenters are easy to operate and reduce the risk of cross-contamination, but the cost is The single-use fermenter is easy to operate and reduces the risk of cross-contamination, but the cost is relatively high.
In addition, performance testing specifications for fermenters include testing of key parameters such as pH, temperature, dissolved oxygen, rotational speed, flow rate, and pressure, as well as sterilization and aseptic performance.
