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Table 2 Antimicrobial activities of selected plant extracts (500 mg/mL conc.) against test strains

From: Antimicrobial and anti-Quorum Sensing activities of selected medicinal plants of Ethiopia: Implication for development of potent antimicrobial agents

Sample No.

Code

Inhibition zone diameter (mm) of plant extracts against reference strains

E. coli K12 DSM 498

S. aureus DSM 346

B. cereus ATCC 10987

B. cereus

Lab strain

P. aeruginosa DSM 1117

C. albicans ATCC 90028

1

ACFA1

NA

10 ± 0.15

12 ± 1.5

23 ± 1.8

NA

15 ± 1.8

2

ACFA2

NA

NA

13 ± 1.08

15 ± 1.09

NA

12 ± 2.02

3

ACFA3

NA

NA

15 ± 1.32

13 ± 1.25

NA

10 ± 0.76

4

ACFO

20 ± 2.01

25 ± 1.32

NA

NA

12 ± 1.09

NA

5

ACHO

15 ± 1.71

NA

NA

NA

8 ± 0.88

35 ± 1.52

6

ASRM

12 ± 1.33

20 ± 1.04

15 ± 1.73

18 ± 1.82

NA

NA

7

CLRA1

NA

NA

10 ± 0.45

9 ± 1.73

NA

NA

8

CLRO1

NA

20 ± 1.89

NA

NA

NA

NA

9

CLRO2

15 ± 1.56

20 ± 0. 24

NA

NA

10 ± 1.09

NA

10

CLRA2

NA

NA

10 ± 0.59

12 ± 1.89

NA

8 ± 1.32

11

EBBP

NA

10 ± 1.33

NA

20 ± 1.22

NA

NA

12

JSSP

NA

15 ± 2.06

NA

20 ± 0.96

NA

9 ± 0.86

13

NSSO

10 ± 0.98

NA

NA

NA

8 ± 0.06

20 ± 2.18

14

NSSP

NA

NA

40 ± 2.33

44 ± 0.31

NA

16 ± 0.58

15

OSLC

NA

NA

12 ± 1.14

NA

NA

NA

16

VALC

NA

NA

22 ± 2.11

22 ± 1.78

NA

NA

17

VALM

NA

NA

14 ± 0.99

15 ± 2.11

NA

NA

18

VALP

NA

NA

NA

NA

NA

15 ± 1.24

19

Gentamycin

Sulfate (1 μg/mL)

25 ± 0.012

28 ± 0.03

30 ± 1.18

25 ± 0.96

30 ± 1.05

ND

20

Nystatin (1 μg/mL)

ND

ND

ND

ND

ND

27 ± 2.33

  1. Where: NA No activity, ND Not determined, Abbreviations of codes are as presented in Table 1