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Bacillus brevis is a Gram-positive aerobic spore-forming bacillus commonly found in soil, air, water, and decaying matter. It is rarely associated with infectious diseases.^[1] The antibiotics gramicidin and tyrocidine were first isolated from it. ^[2]

Bacillus brevis forms gram positive (variable) rods with optimal growth of 35-55C. It is a motile spore former with positive catalase activity. Amylase negative, casein negative, gelatinase positives, indole negative, VP negative and most are citrate utilizers.

References

1. ^ Pearce, Paul. "Laboratory Evaluation of Endoscope Water Bottles." EndoNurse. 2005. 17 Jun 2006 <Laboratory Evaluation of Endoscope Water Bottles>.
2. ^ Abedon, Stephen. "Bacteria Binomials." 26 Apr 1998. Ohio State University. 17 Jun 2006 <http://www.mansfield.ohio-state.edu/~sabedon/biol4045.htm>.