Table 4. Comparing the antibacterial activity of Bacillus sp. and purified amylase enzyme to different standard antibiotics.
| Tested pathogens/Antibiotica/Isolates | Escherichia coli | Klebsiella pneumoniae | Acinetobacter baumanii | Pseudomonas aeuroginosa | Staphylococcus aureus (MRSA) | ||
|---|---|---|---|---|---|---|---|
| Chloramphenicol (30 µg) | S | R | S | I | I | ||
| Oxacillin (1 mcg) | NA | NA | NA | NA | R | ||
| Vancomycin (30 mcg) | NA | NA | NA | NA | R | ||
| Ampicillin- sulbactam (10/10 mcg) | I | I | R | I | NA | ||
| Pencillin G (10 U) | NA | NA | NA | NA | R | ||
| Erythromycin (15 mcg) | NA | NA | NA | NA | I | ||
| Sulfameth.-trimethoprim (23.75/1.25 µg) | R | R | R | R | I | ||
| Cefotaxime (30 mcg) | R | R | R | R | R | ||
| Gentamycin (10 µg) | R | R | R | R | R | ||
| Meropenem (10 µg) | S | R | R | R | NA | ||
| Piperacillin (100 µg) | R | R | R | R | NA | ||
| Piperacillin-tazobactam (100/10 µg) | R | R | R | S | NA | ||
Notes.
a
Comparing the antimicrobial susceptibility of a group of standard antibiotics (CLSI, 2017) against five human pathogenic strains (control).
b
Antimicrobial activity of the isolated Bacillus sp.
- R
- Resistant
- S
- sensitive
- I
- intermediate
- NA
- Not applicable (for antibiotics that were not specific to the bacterial strains)
- NI
- No inhibition
- C
- antimicrobial activity of purified amylase from some isolated Bacillus sp.
- ABM
- amylase purified from Bacillus megaterium
- ABS
- amylase purified from Bacillus subtilis
- ABC
- amylase purified from purified Bacillus cereus
- ABT
- amylase purified from Bacillus thuringiesis
- ABL
- amylase purified from Bacillus lentus
- ABA
- amylase purified from Bacillus alvei
Values expressed as mean ± SD.