T A B L E I 1
Biochemical reactions of Actinomyces and A r a c h n i a t
Actinomyces
Arachnia
Tests
bovis
odontolyticus
meyerii
viscosus
naeslundii
israelii
propionica
Catalase
Indole
Nitrate reduction
Nitrite reduction
Esculin hydrolysis
Starch hydrolysistt
Gelatin liquefaction
Urea agar
Adonitol
Arabinose
Dulcitol
Glucose
Glycerol
Lactose
Mannitol
Raffinose
Salicin
Starch
Sucrose
Trehalose
Xylose
+ (100)
- (0)
- (0)
+ (100)
429)
+ (100)
+ (100)
+ (100)
- (14)
+ (79)
+ (100)
+ (100)
- (0)
t Data from Slack and Gerencser (1975); data for A. meyerii from Smith (1975) and Holmberg and Nord (1975).
$ Holmberg and Nord record + nitrate reduction for A. meyerii.
3 + , positive reaction; - , negative reaction; d, different types. Figures in parentheses indicate the percentage of positive
tt + , wide zone of clear hydrolysis, other species marked - may give a narrow (less than 10 mm) zone of hydrolysis.
$1 According to Georg (1974) most strains of A. israelii ferment dulcitol.
3s Serotype 1 strains of A. israelii are usually + ; all serotype 2 strains are - .
strains when information is available. n.d., no data.