Polyprenols of Ginkgo biloba Enhance Antibacterial Activity of Five Classes of Antibiotics
Table 2
Comparison of the inhibition halos among different samples (Tukey’s test at 5% probability).
Samples
Diameter of the inhibition halos (mm) ± SEM,
E. coli
S. aureus
GBP
GBP-1
11.1 ± 0.1
11.5 ± 0.1
GBP-2
11.1 ± 0.1
11.4 ± 0.1
GBP-3
11.0 ± 0.1
11.4 ± 0.1
GBP-4
10.5 ± 0.1
10.7 ± 0.1
1
A
13.9 ± 0.1
22.7 ± 0.1
A+GBP-1
13.4 ± 0.1
26.7 ± 0.1
A+GBP-2
13.0 ± 0.1
26.0 ± 0.1
A+GBP-3
13.0 ± 0.1
25.6 ± 0.1
A+GBP-4
13.1 ± 0.1
22.9 ± 0.1
2
C
18.2 ± 0.1
25.6 ± 0.1
C+GBP-1
22.8 ± 0.1
28.8 ± 0.1
C+GBP-2
22.2 ± 0.1
28.1 ± 0.1
C+GBP-3
21.5 ± 0.1
27.5 ± 0.1
C+GBP-4
18.2 ± 0.1
25.7 ± 0.1
3
G
26.3 ± 0.1
18.3 ± 0.1
G+GBP-1
29.6 ± 0.1
25.8 ± 0.1
G+GBP-2
29.0 ± 0.1
24.9 ± 0.1
G+GBP-3
28.5 ± 0.1
24.4 ± 0.1
G+GBP-4
26.2 ± 0.1
18.4 ± 0.1
4
E
/
26.8 ± 0.1
E+GBP-1
11.6 ± 0.1
29.5 ± 0.1
E+GBP-2
10.9 ± 0.1
28.7 ± 0.1
E+GBP-3
10.5 ± 0.1
28.2 ± 0.1
E+GBP-4
9.0 ± 0.1
26.3 ± 0.1
5
P
34.5 ± 0.1
/
P+GBP-1
33.9 ± 0.1
13.5 ± 0.1
P+GBP-2
34.0 ± 0.1
13.1 ± 0.1
P+GBP-3
34.1 ± 0.1
12.5 ± 0.1
P+GBP-4
33.9 ± 0.1
10.0 ± 0.1
A: ampicillin, C: ciprofloxacin, G: gentamicin sulfate, E: erythromycin, and P: polymyxin B sulfate. Greater and having statistical difference compared with the corresponding antibiotics group (Tukey’s HSD test, < 0.05). The same lowercase letters (a, b, c, and d) in the column of the same group indicate no statistical difference (Tukey’s HSD test, > 0.05).
