Automatic containment sampling of recombinant escherichia coli fermentations

Area of Science:

• Biotechnology
• Process Engineering
• Microbial Cultivation

Background:

• Effective containment sampling is crucial for bioprocess monitoring and control.
• Existing methods for shake flask and fermentor sampling can pose containment risks.
• Adapting proven safety systems from other fields offers potential for improved bioprocess containment.

Purpose of the Study:

• To develop and validate a safe and reliable containment sampling system for shake flasks and fermentors.
• To adapt a hospital-derived blood collection system for bioprocess applications.
• To enhance biosafety and sample integrity during microbial cultivation.

Main Methods:

• A containment sampling system was designed using a vacuum-sealed collection vial and a penetrating needle.
• Two versions were developed: a manual system for shake flasks and an automated system for fermentors.
• The automated system incorporates cool storage for collected samples.

Main Results:

• The developed system effectively withdraws fermentation fluid samples through a sealed vial.
• The manual and automated systems provide reliable containment during sampling.
• The automated system with cool storage preserves sample integrity.

Conclusions:

• The adapted blood collection system provides a safe and effective method for sampling shake flasks and fermentors.
• This novel sampling system enhances biosafety in bioprocessing environments.
• The technology offers comparable safety to its clinical application, protecting personnel and samples.