Table 7 Antibacterial activity of various extracts/fractions of orchids by agar-well diffusion method
Gram positive | Gram negative | |||||
|---|---|---|---|---|---|---|
S. No | Extracts/fractions | Staphylococcus aureus (2413) | Enterococcus sp. (2449) | Serratia sp. (2442) | Acinetobacter sp. (2457) | E. coli (2461) |
1 | RrR Et2O | 7.33 ± 0.57 | 7.66 ± 0.9 | 6.33 ± 0.57 | 13 ± 0.8 | 7 ± 0.81 |
2 | RrR n-BuOH | 6.3 ± 0.5 | 6.0 ± 1 | 6.66 ± 0.5 | 7.3 ± 0.5 | 6.66 ± 0.5 |
3 | RrR Aq ext | 6.0 ± 1 | 6.0 ± 1 | 6.0 ± 1 | 6.0 ± 1 | 6.0 ± 1 |
4 | RrS Et2O | 6.33 ± 0.4 | 7.66 ± 0.4 | 7.66 ± 0.4 | 6.66 ± 0.9 | 6.66 ± 0.4 |
5 | RrS n-BuOH | 6.66 ± 0.5 | 7.33 ± 0.5 | 6 ± 0 | 7.33 ± 0.5 | 7.0 ± 0 |
6 | RrS Aq ext | NI | 6.66 ± 0.5 | 6.33 ± 0.5 | 5.66 ± 0.5 | 8.0 ± 1.0 |
7 | RrL Et2O | 8 ± 0.8 | 8.33 ± 0.4 | 7 ± 0 | 8.33 ± 0.4 | 9.33 ± 0.4 |
8 | RrL n-BuOH | 6.66 ± 0.5 | 11.33 ± 0.5 | 7.33 ± 0.5 | 7.33 ± 0.5 | 8 ± 0 |
9 | RrL Aq ext | NI | 7.33 ± 0.5 | 6.0 ± 0 | 8.66 ± 0.5 | 7.0 ± 0 |
10 | TcR Et2O | 7.33 ± 0.57 | 12.66 ± 0.57 | NI | 7.66 ± 0.57 | 12.66 ± 0.57 |
11 | TcR n-BuOH | 7.66 ± 0.57 | 8.33 ± 0.57 | NI | 9.00 ± 0.00 | 8.33 ± 0.57 |
12 | TcR Aq ext | 8.33 ± 0.57 | 7.00 ± 0.00 | NI | 7.33 ± 0.57 | 7.00 ± 0.00 |
13 | TcS Et2O | 7.66 ± 0.57 | 7.66 ± 0.57 | NI | 7.33 ± 0.57 | 8.33 ± 0.57 |
14 | TcS n-BuOH | 7.00 ± 0.00 | 8.33 ± 0.57 | NI | 8.00 ± 0.00 | 8.33 ± 0.57 |
15 | TcS Aq ext | 7.33 ± 0.57 | 7.33 ± 0.57 | NI | 7.00 ± 0.00 | 7.33 ± 0.57 |
16 | TcL Et2O | 7.00 ± 0.00 | 7.66 ± 0.57 | NI | 7.00 ± 0.00 | 7.33 ± 0.57 |
17 | TcL n-BuOH | 8.33 ± 0.57 | 8.33 ± 0.57 | NI | 7.00 ± 0.00 | 7.00 ± 0.00 |
18 | TcL Aq ext | 7.00 ± 0.00 | 7.33 ± 0.57 | NI | 7.00 ± 0.00 | 7.00 ± 0.00 |
19 | SnP n-Hex | 12.23 ± 0.57 | 7.00 ± 0.00 | NI | 7.66 ± 0.57 | 9.85 ± 0.57 |
20 | SnP DCM | 7.66 ± 0.57 | 7.00 ± 0.00 | NI | 7.33 ± 0.57 | 8.33 ± 0.57 |
21 | SnP EtOAc | 7.00 ± 0.00 | 7.00 ± 0.00 | NI | 7.00 ± 0.00 | 7.33 ± 0.57 |
22 | SnP Aq ext | 7.66 ± 0.57 | 7.00 ± 0.00 | NI | 9.00 ± 0.00 | 8.33 ± 0.57 |
23 | SnF n-Hex | 12.00 ± 0.00 | 7.00 ± 0.00 | NI | 8.00 ± 0.00 | 11.33 ± 0.57 |
24 | SnF DCM | 8.33 ± 0.57 | 7.00 ± 0.00 | NI | 7.00 ± 0.00 | 7.00 ± 0.00 |
25 | SnF EtOAc | 8.33 ± 0.57 | 7.00 ± 0.00 | NI | 7.33 ± 0.57 | 7.00 ± 0.00 |
26 | SnF Aq ext | 7.33 ± 0.57 | 7.00 ± 0.00 | NI | 7.00 ± 0.00 | 7.33 ± 0.57 |
27 | SnL n-Hex | 11.00 ± 0.00 | 7.00 ± 0.00 | NI | 7.00 ± 0.00 | 9.00 ± 0.00 |
28 | SnL DCM | 9.00 ± 0.00 | 7.00 ± 0.00 | 9.00 ± 0.00 | 8.33 ± 0.57 | 7.66 ± 0.57 |
29 | SnL EtOAc | 8.00 ± 0.00 | 7.00 ± 0.00 | 8.33 ± 0.57 | 7.66 ± 0.57 | 7.33 ± 0.57 |
30 | SnL Aq ext | 7.33 ± 0.57 | 7.00 ± 0.00 | NI | NI | NI |
Tetracycline | 16.56 ± 0.58 | 15.71 ± 0.58 | 17.42 ± 0.58 | 15.71 ± 0.58 | 18.85 ± 0.58 | |
Gentamycin | 15.76 ± 0.58 | 15.71 ± 0.58 | 11.56 ± 0.58 | 14.56 ± 0.58 | 18.79 ± 0.58 | |