Skip to main content
. 2013 Jun 13;13:130. doi: 10.1186/1472-6882-13-130

Table 2.

Mean diametersa of microbial growth inhibition zones (mm) of test samplesb

Microoganisms
Samples
EO
F1
F3
F4
F5
Referencec
Gram (−) bacteria 100% 10% 1% 10% 1% 0.1% 10% 1% 0.1% 10% 1% 0.1% 10% 1% 0.1% 10 μg
Escherichia coli ATCC 11775
12
9
6
6
6
6
9
8
6
8
8
7
9
7
7
21
Klebsiella pneumoniae ATCC 13883
11
8
6
8
7
6
8
6
6
9
8
7
8
6
6
20
Proteus mirabilis
11
9
6
13
12
11
8
8
6
12
11
10
12
10
9
18
Pseudomonas aeruginosa ATCC 27853
13
9
6
9
7
6
9
7
6
7
6
6
7
6
6
24
Salmonella typhi ATCC 6539
11
9
6
8
8
6
8
7
6
7
7
6
6
6
6
24
Shigella flexneri
18
13
8
12
8
6
10
8
6
9
7
6
8
7
6
23
Gram (+) bacteria
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Enterococcus faecalis ATCC 10541
16
12
6
12
10
9
10
8
6
10
8
8
13
11
10
20
Staphylococcus aureus ATCC 25922
16
11
7
10
8
6
11
8
6
9
7
6
8
7
6
25
Fungi
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Candida albicans ATCC 9002
13
7
6
6
6
6
6
6
6
6
6
6
6
6
6
22
Candida glabrata CIPA 35
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
23
Candida krusei ATCC 6258
10
6
6
6
6
6
6
6
6
6
6
6
6
6
6
18
Candida lusitaniae ATCC 200950
13
10
6
12
9
9
11
9
7
12
10
6
14
12
10
33
Candida parapsilosis ATCC 22019
7
6
6
6
6
6
6
6
6
6
6
6
6
6
6
24
Candida tropicalis ATCC 750 14 7 6 6 6 6 6 6 6 6 6 6 7 6 6 23

The results are the mean values of triplicate tests measured after 24 hrs (at 37°C for bacteria) and 48 hrs (at 35°C for fungi) incubation; aDiameter value of 6 mm is equal to disc diameter, implying no activity; bEssential oil (EO), fractions of essential oil (F1, F3, F4 and F5); cReference compounds were gentamicin and nystatine for bacteria and fungi respectively.