Chemical Compositions of Essential Oil from Aerial Parts of Cyclospermum leptophyllum and Its Application as Antibacterial Activity against Some Food Spoilage Bacteria
Table 2
Antibacterial activity of various concentrations of CSEO solution against test microorganisms by agar well diffusion.
S.No.
Test microorganisms
Zone of inhibition diameter (ZID) mm
Cipro.
60% CSEO
30% CSEO
15% CSEO
7.5% CSEO
3.75% CSEO
5 μg/ml
1
S. aureus
30.67 ± 0.58
24.00 ± 0.00
20.00 ± 0.00
17.67 ± 0.58
14.33 ± 0.58
32.00 ± 0.00
2
S. epidermidis
26.67 ± 0.58
23.00 ± 0.00
16.67 ± 0.58
12.00 ± 0.00
9.00 ± 0.00
38.67 ± 1.15
3
S. agalactiae
17.00 ± 1.00
8.00 ± 0.00
8.00 ± 0.00
8.00 ± 0.00
8.00 ± 0.00
32.00 ± 1.73
4
E. coli
20.00 ± 1.00
14.67 ± 0.58
9.00 ± 0.00
9.00 ± 0.00
9.00 ± 0.00
34.00 ± 1.00
5
P. mirabilis
20.33 ± 0.58
11.67 ± 0.58
8.67 ± 0.58
8.00 ± 0.00
8.00 ± 0.00
39.00 ± 1.00
6
P. aeruginosa
16.33 ± 0.58
15.00 ± 0.00
12.67 ± 0.58
9.00 ± 0.00
8.00 ± 0.00
32.00 ± 1.00
ZID values are expressed as the mean ± SD of three replicates. Cipro: ciprofloxacin (positive control), Tween-80 (negative control), and ZID values including well diameter, 8 mm; significant as compared to the control.
