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Bacillus brevis
Scientific classification
Kingdom: Bacteria
Phylum: Firmicutes
Class: Bacilli
Order: Bacillales
Family: Bacillaceae
Genus: Bacillus
Species: B. brevis
Binomial name
Bacillus brevis

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.


  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 <>.


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