Table 5 Antibacterial activity of cell-free supernatant of the isolated strains against some pathogenic bacteria.

From: Isolation and characterization of novel Bacillus strains with superior probiotic potential: comparative analysis and safety evaluation

Pathogenic bacteria

The inhibition zone diameter (mm) caused by the isolates

G1

GB

Ma1b

Khk

Ga1a

SHE

GE1

Gua

PUN

G2a

Ma1d

GHE

Ga3a

K. pneumoniae

NO

NO

NO

17 ± 0.6

NO

NO

10 ± 0.5

17 ± 0.5

NO

20 ± 0.7

11 ± 0.8

NO

20 ± 0.9

MRSA

NO

NO

NO

NO

NO

22 ± 0.5

11 ± 0.4

NO

NO

NO

NO

9 ± 0.5

NO

E. faecium

NO

NO

NO

16 ± 0.5

12 ± 0.7

15 ± 0.5

11 ± 0.5

13 ± 0.3

11 ± 0.5

15 ± 1

16 ± 0.7

11 ± 0.7

18 ± 0.8

VRE

12 ± 0.5

NO

NO

NO

NO

15 ± 0.8

15 ± 0.4

NO

NO

NO

21 ± 1

NO

10 ± 0.6

A. baumannii

NO

NO

NO

NO

NO

13 ± 0.5

NO

NO

NO

NO

NO

NO

NO

S. typhimurium ATCC1609

20 ± 1

15 ± 0.6

NO

NO

NO

NO

12 ± 0.6

NO

13 ± 0.5

NO

18 ± 1

NO

NO

ESBL E. coli

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

NO

S. sonnei ATCC9290

15 ± 1

9 ± 0.5

9 ± 0.5

16 ± 1

18 ± 1

NO

11 ± 0.5

16 ± 1

19 ± 0.5

8 ± 0.5

16 ± 1

12 ± 0.4

10 ± 0.4

L. monocytogenes ATCC7624

NO

12 ± 0.6

NO

NO

NO

8 ± 0.8

16 ± 1

NO

10 ± 0.2

13 ± 1

11 ± 0.5

NO

NO

S. aureus ATCC25923

NO

NO

NO

NO

14 ± 2

NO

12 ± 0.5

11 ± 0.5

15 ± 0.7

11 ± 0.5

13 ± 0.7

16 ± 0.4

8 ± 0.5

S. pyogenes

11 ± 0.3

17 ± 0.6

14 ± 0.5

NO

17 ± 0.5

NO

NO

22 ± 0.7

6 ± 0.2

NO

NO

NO

NO

E. coli ATCC25922

NO

14 ± 0.6

NO

NO

9 ± 0.5

NO

10 ± 0.5

NO

11 ± 0.6

NO

NO

NO

NO

  1. Values are representatives of mean ± S.D., (n = 3). )NO: indicates not observed any inhibition zone).