Related Experiment Videos
Propionic acid production in an in situ cell retention bioreactor
1Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi.
Applied Microbiology and Biotechnology
|October 17, 2001
Abstract:
Continuous fermentations were conducted with in situ cell retention using spin filters (pore size 5 microm and 10 microm) for propionic acid production by Propionibacterium acidipropionici. Continuous fermentation with a 5-microm pore size spin filter resulted in 50% cell retention. Propionic acid productivity was enhanced (0.9 g l(-1) h(-1)) by approximately four-fold compared to conventional batch fermentation (0.25 g l(-1) h(-1)). The in situ cell retention (5-microm pore size spin filter) bioreactor was operated continuously and smoothly for 8 days at a dilution rate of D=0.05 h(-1).