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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