Skip to main content

Table 3 Biochemical characterization or test results of NAr5 and NAr6

From: Resistance‐guided isolation and characterization of antibiotic‐producing bacteria from river sediments

Type of Biochemical Test

Supplementation of YEGA media

NAr5

NAr6

Carbohydrate source used

Lactose

+++

+++

Maltose

++

+++

Glucose

++

+++

Sucrose

+++

+++

Mannitol

++

+++

Starch

+++

+++

Fructose

+++

+++

D-Xylose

+++

+++

Salt tolerance test

2 %

++

++

3 %

+++

+

4 %

+++

+

5 %

+++

+

6 %

++

+

7 %

++

+

8 %

+

+

pH tolerance test

pH 5

+++

+++

pH 6

+++

+++

pH 7

+++

+++

pH 8

+++

+++

pH 9

+++

+++

pH 10

+++

+++

Utilization of the supplemented antibiotic as a potential carbon source

Meropenem

+++

+

Azithromycin

+

+++

Utilization of the supplemented antibiotic as a nitrogen source

Meropenem

+++

-

Azithromycin

-

+++

Growth on in presence of antibiotics

Clindamycin (0.5 µg/ml)

+++

+++

Azithromycin (0.5 µg/ml)

+++

+++

Meropenem (4 µg/ml)

+++

+

  1. The sign ‘+++’ indicates abundant production, ‘++’ indicates moderate production, ‘+’ indicates poor production and ‘-’ indicates not grown