Phylum Actinobacteria, Class Actinobacteria, Order Micrococcales, Family Brevibacteriaceae, Genus Brevibacterium, Brevibacterium
epidermidis Collins, Farrow, Goodfellow and Minnikin 1983.
Gram-positive relatively short rods with a marked rod-coccus cycle when growing on
complex media; culture up to 24 h produce coryneform rods with V arrangements,
while older cells are coccoid or coccobacillary and decolorize easily. Nonmotile.
Spores are not produced. Mycolic acids are not present.
Colonies are opaque, convex, smooth and shiny surface, white-yellow after 24 h of
incubation at 30-37 ºC in 5% CO2 atmosphere on 5% sheep blood Columbia agar.
Aerobic. Nonhemolytic. CAMP test negative. Nonfastidious. Halotolerant (15% NaCl).
Obligate aerobic. Can grow at 20 and 37 ºC, but not at 42 or 10 ºC. Survive at 60 ºC.
The habitat is human skin. May contribute to the malodour of some people’s feet.
- Funke G., von Graevenitz A., Clarridge III J.E., and Bernard K.A., 1997. Clinical Microbiology of Coryneform Bacteria. Clinical
Microbiology Rewiews Vol. 10, No. 1, p. 125-159.
- Funke G., 2006.Corynebacteria and rare coryneforms. In: Topley & Wilson’s Microbiology & Microbial Infections, 10th Edition,
Edited by Borriello S.P., Murray P.R. and Funke G.,Edward Arnold (Publishers) Ltd., Bacteriology, volume 2.
- Trujillo M.E. and Goodfellow M., 2012. Genus I. Brevibacterium Breed 1953, emend. Collins, Jones, Keddie and Sneath 1980.In:
Goodfellow M., Kampfer P., Busse H.J., Trujillo M.E., Suzuki K., Ludwig W. and Whitman W.B. (Editors), Bergey’s Manual of
Systematic Bacteriology, second edition, Vol. Five, The Actinobacteria, Part A, Springer, Athens, pp. 685-700.
Not acid fast. Oxidative metabolism.
Positive results for casein hydrolysis, catalase, DNA hydrolysis, gelatin hydrolysis, pyrazinaminidase & xanthine hydrolysis.
Negative results for esculin hydrolysis, alpha-glucosidase, oxidase, starch hydrolysis, urease, acid production from: glucose,
2,3-butylene glycol, maltose, mannitol, sucrose & xylose.
Variable results for nitrate reduction.
(c) Costin Stoica