Table 8. The effective of various iron sources to remove false positive as E. vulneris on the media

Oxoid Oxoid1 Oxoid2 OK VRBG VRBG1 NGTE1 NGTE2 NGTE NGTE3 NGTE4
Iron source FAC FAC FE FC X FE X FE FE FE FAC
Carbohydrate X X X X Lac Lac Glu X Glu Lac Glu
α-Glucosidase substrates Chro Mug Mug Mug Mug Mug Mug Mug Mug Mug Mug
E. sakazakii (Cronobacter spp.) + + + + + + + + + + +
E. cloacae
E. coli K12
E. hermanii
Salmonella
E. vluneris + + + + + + + +
Oxoid 1 and 2, substitution by α-MUG or Iron source in Oxoid.
VRBG 1, substitution by iron source in VRBG.
NGTE 1, 2, 3, and 4, substitution by iron source or carbohydrate in NGTE.
FAC, ferric ammonium citrate; FC, ferric citrate; FE, ferrioxamine E.
Chro, 5-bromo-4-chloro-3-indolyl-α-D-glucopyranoside (BCIG).
Mug, 4-methyl-umbelliferyl α-D-glucoside (α-MUG).
X, blank; Lac, lactose; Glu, glucose.
+, positive of α-glucosidase substrates; −, negative of α-glucosidase substrates.