Table 2.
Antimicrobial susceptibility effects of the Stem bark extracts of F. thonningii
|
Extract (mg per hole) |
Organisms/zone of inhibition (mm) | |||||
| E.c | Kb | S.a | S.p | S.t | P.e | |
| Crude | ||||||
| 20 | *a19.33 | **a26.66 | **a25.33 | *a32.33 ± | **a28.33 | **a33.33 |
| ± 5.13 | ± 3.00 | ± 6.11 | 2.51 | ± 2.00 | ± 7.23 | |
| 10 | **bb11.33 ± | *a21.66 | *b18.00 | *a28.00 ± | **a18.66 | *a27.33 |
| 1.53 | ± 4.00 | ± 7.00 | 2.65 | ± 2.31 | ± 3.79 | |
| n-Butanol | ||||||
| 20 | *a33.33 | *a23.00 | **a26.33 | *a27.66 | **a31.00 | *a21.00 |
| ±6.11 | ± 2.65 | ± 3.51 | ± 9.29 | ± 3.60 | ± 3.61 | |
| 10 | *a27.00 | *b18.66 | *b20.00 | *a22.00 ± | *b22.66 | *a15.33 |
| ± 2.65 | ± 5.13 | ± 0.00 | 7.49 | ± 4.00 | ± 5.00 | |
| Aqueous layer | ||||||
| 20 | *a30.33 | **a33.33 | **a17.00 | **a16.66 ± | **a30.00 | *a22.00 |
| ± 9.60 | ± 3.00 | ± 6.00 | 5.85 | ± 0.00 | ± 3.47 | |
| 10 | *b24.00 ± | *b26.00 | *b13.00 | *a11.66 ± | **a24.33 | *a16.66 |
| 8.19 | ± 3.61 | ± 11.26 | 2.88 | ± 4.00 | ± 5.77 | |
| CIP (5 µg/disc) | *26.67 | *19.67 | *19.33 | *25.00 | *29.33 | *21.67 |
| ± 1.15 | ± 0.58 | ± 1.15 | ± 0.00 | ± 1.15 | ± 1.15 | |
Key: Ec = Escherichia coli; Kb = Klebsiella specie; Sa = Staphylococcus aureus; Sp = Streptococcus specie; St = Salmonella typhi; Pe = Pseudomonas aeruginosa, CIP=Ciprofloxacin, Same letter or asterisks(control) for the same portion in same column is considered insignificant (aaP>0.05, * P>0.05); different letters or asterisks on the same column is considered significant (abP<0.05, *P<0.05) using paired t-test; Student-Newman-Keuls Multiple Comparisons Test; data are Mean±SD of three independent tests