title: Rapid large-scale growth of Helicobacter pylori in flasks and fermentors.
abstract: We developed procedures for large-scale cultivation of Helicobacter pylori in flasks and fermentors. Flasks incubated closed under a microaerophilic gas phase with a cotton plug covered by a plastic bag, followed by removal of the bag after 8 h, gave excellent growth. Growth in a 10-liter fermentor led to excessive foaming if the medium was sparged with gas; silicone- or polyglycol-based antifoaming agents were severely inhibitory. Use of fermentor surface gassing, first with a microaerophilic 6% oxygen gas mixture, then with air, and then with 95% oxygen, allowed the culture to grow to an A600 of 2.5 in < 24 h. This method was modified for scale-up to a 100-liter fermentor.
authors.affiliation: Department of Microbiology, University of Iowa, Iowa City 52242, USA.
authors.forename: M
authors.initials: M
authors.lastname: Deshpande
authors.forename: E
authors.initials: E
authors.lastname: Calenoff
authors.forename: L
authors.initials: L
authors.lastname: Daniels
mesh_terms: D003470:Culture Media; D016480:Helicobacter pylori / Q000254:growth & development*; D008828:Microbiological Techniques
chemical_list: D003470:Culture Media