Phylum Firmicutes, Class Bacilli, Order Bacillales, Family Bacillaceae, Genus Bacillus, Bacillus thermoamylovorans Combet-Blanc,
Ollivier, Streicher, Patel, Dwivedi, Pot, Presnier and Garcia 1995.
Description is based on a single isolate.
Gram-positive, slightly motile rods, 0.45-0.5 x 3.0-4.0 µm, endospores have not been
Colonies are white and lenticular, 2-3 mm in diameter / 2 days. Facultatively anaerobic.
Methylotrophic, some strains also grow on ethanol. Moderately thermophilic, growth
temperature 50-55 ºC (optimum), pH 5.4-8.5 (optimum pH 7). NaCl, alantoin or urate
are not required for growth. Vitamins and nucleic acid derivatives will stimulate growth,
but are not essential.
Isolated from Senegalese palm wine, an African alcoholic bevarage. Cells are killed by heating at 80 ºC for 5 minutes.
- N.A. Logan and P. De Vos, 2009. Genus I. Bacillus Cohn 1872. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W. Ludwig, F.A.
Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes, Springer, 21-127.
- Y. Combet-Blanc, B. Ollivier, C. Streicher, B. K. C. Patel, P. P. Dwivedi, B. Pot, G. Prensier, and J.-L. Garcia, 1995. Bacillus
themoamylovorans sp. nov., a Moderately Thermophilic and Amylolytic Bacterium. IJSB 45, 1, 9-16.
Heterolactic fermentation of hexoses occurs; the end products are lactate, acetate,
ethanol, and formate but not H2.
Positive results for arginine dihydrolase, catalase, hydrolysis of starch, acid production from: L-arabinose, D-glucose, D-mannose,
salicin, starch, D-xylose, N-acetyl-D-glucosamine, amygdalin, arbutin, cellobiose, D-fructose, D-galactose, beta-gentibiose,
gluconate, lactose, maltose, melezitose, rhamnose, sucrose and trehalose.
Negative results for oxidase, indole production, H2S production, nitrate reduction, acid production from: D-mannitol, glycerol,
D-arabinose, D- or L-arabitol, erythritol, meso-inositol, inulin, lyxose, melibiose, raffinose, sorbose and xylitol.
(c) Costin Stoica