Biochemical Test of Actinomyces israelii

Biochemical Test of Actinomyces israelii

Basic Characteristics Properties (Actinomyces israelii)
CAMP -ve
Capsule -ve
Catalase -ve
Gelatin Hydrolysis -ve
Gram Staining Gram +ve
Hemolysis -ve
Indole -ve
Motility -ve
MR (Methyl Red) Variable
Nitrate Reduction Variable
OF (Oxidative-Fermentative) Fermentative
Pigment -ve
Shape Branching filaments, branched rods

and diphtheroidal forms

Urease -ve
VP (Voges Proskauer) -ve

Fermentation of

Cellobiose +ve
DNase -ve
Dulcitol -ve
Fructose +ve
Galactose +ve
Glucose +ve
Glycogen Variable
Hippurate -ve
Inositol Variable
Lactose +ve
Maltose +ve
Mannitol +ve
Mannose +ve
Melibiose Variable
MyoInositol Variable
Raffinose +ve
Rhamnose -ve
Ribose Variable
Salicin Variable
Sorbitol Variable
Starch -ve
Sucrose +ve
Trehalose Variable
Xylose +ve

Enzymatic Reactions

Acetoin Production -ve
Casein Hydrolysis -ve
Esculin Hydrolysis +ve
α -Fucosidase -ve
α-Glucosidase +ve
Lipase -ve
β-NAG -ve
ONPG (β-galactosidase) +ve


  1. Michael Goodfellow, editors, volume 5; William B. Whitman, director of the editorial office; Aidan C. Parte, managing editor. (2012). Bergey’s manual of systematic bacteriology. Volume 5, The actinobacteria. New York :Springer
  4. Sarkonen, N., Könönen, E., Summanen, P., Könönen, M., & Jousimies-Somer, H. (2001). Phenotypic identification of Actinomyces and related species isolated from human sources. Journal of clinical microbiology, 39(11), 3955-61.
  5. Slack, J. M., Landfried, S., & Gerencser, M. A. (1969). Morphological, biochemical, and serological studies on 64 strains of Actinomyces israelii. Journal of bacteriology, 97(2), 873-84.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.