Clostridium aerotolerans van Gylswyk and van der Toorn emend. Chamkha et al.
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2. Under anaerobic conditions, withdraw 0.5 ml of the recommended broth from a single test tube (5 to 6 ml) and rehydrate the vial contents.
3. Aseptically transfer this aliquot back into the broth. Additional tubes may be inoculated with 0.5 ml each from the suspension. 0.1 ml may also be inoculated onto a slant. Streak several blood plates to check for colonial morphology and purity.
4. Incubate tubes under an anaerobic atmosphere at 37oC. Incubate one agar plate anaerobically for colony formation, and one aerobically for aerobic contamination check.
5. Within 48 hours, growth should be evident by turbidity in the broth and by irregular, convex, glistening, slightly beta hemolytic colonies on the anaerobic agar surfaces. No growth should occur on agar plates incubated aerobically.
Anaerobic conditions for transfer may be obtained by either of the following:
·Use of an anaerobic gas chamber, or
·Placement of test tubes under a gassing cannula system hooked to anaerobic gas.
Anaerobic conditions for incubation may be obtained by any of the following:
·Loose screw caps on test tubes in anaerobic chamber,
·Loose screw caps on test tubes in an activated anaerobic gas pack jar, or
·Use of sterile butyl rubber stoppers on test tubes so that an anaerobic gas headspace is retained.
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van Gylswyk NO, van der Toorn JJ. Clostridium aerotolerans sp. nov., a xylanolytic bacterium from corn stover and from the rumina of sheep fed corn stover. Int. J. Syst. Bacteriol. 37: 102-105, 1987.
Chamkha M, et al. Metabolism of cinnamic acids by some Clostridiales and emendation of the descriptions of Clostridium aerotolerans, Clostridium celerecrescens and Clostridium xylanolyticum. Int. J. Syst. Evol. Microbiol. 51: 2105-2111, 2001. PubMed: 11760953