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Table 2 Inhibition zone diameter and minimum inhibitory concentration of the active compound (R f value 0.56) produced by Streptomyces sannanensis SU118

From: Production of potent antimicrobial agent by actinomycete, Streptomyces sannanensis strain SU118 isolated from phoomdi in Loktak Lake of Manipur, India

Test microorganisms

Inhibition zone diameter (mm) ¥

MIC (μg/ml)

MIC of penicillin (μg/ml)

Bacillus subtilis MTCC 736

25 × 1.0

2.0

0.5

Bacillus circulans MTCC 8074

23 × 1.2

3.0

0.5

Bacillus megaterium MTCC 8075

26 × 1.5

2.0

0.5

Staphylococcus aureus MTCC 96

31 × 0.9

0.5

0.25

Staphylococcus aureus (Clinical isolate)

30 × 0.9

0.5

0.25

Micrococcus luteus MTCC 2987

25 × 1.3

2.0

0.5

Mycobacterium phlei MTCC 1724

25 × 1.0

2.0

0.5

Mycobacterium smegmatis MTCC 6

21 × 0.5

3.0

1.0

Escherichia coli MTCC 739

 

ND

ND

Klebsiela pneumoniae MTCC 3040

 

ND

ND

Pseudomonas aeruginosa MTCC 2453

 

ND

ND

  1. Note: Data express as mean × SD (n = 3) " – " : No Inhibition Zone; ¥ Concentration of the active compound: 1 mg/ml; ND – Not determined.