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. 1995 Jun;61(6):2431-5.
doi: 10.1128/aem.61.6.2431-2435.1995.

Rapid large-scale growth of Helicobacter pylori in flasks and fermentors

M Deshpande  1 , E Calenoff, L Daniels
Affiliations

Rapid large-scale growth of Helicobacter pylori in flasks and fermentors

M Deshpande et al. Appl Environ Microbiol. 1995 Jun.

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.

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