Table 5.
Antibacterial and antioxidant activity of guava leaf extract and jellies
| Samples | Antibacterial activity—zone of inhibition (mm) | Antioxidant activity (%) | ||||
|---|---|---|---|---|---|---|
| P. vulgaris | S. mutans | B. subtilis | S. aureus | DPPH radical | Hydroxyl radical | |
| Guava leaf extract | 12.1 ± 0.03 | 13.3 ± 0.01 | 14.1 ± 0.02 | 13.6 ± 0.01 | 47.87 ± 0.07 | 43.36 ± 0.06 |
| Ampicillin | 03.3 ± 0.01 | 14.7 ± 0.05 | 13.6 ± 0.01 | 15.8 ± 0.04 | – | – |
| Control jelly (CJ) | 03.1 ± 0.04 | 07.2 ± 0.01 | 05.2 ± 0.02 | 07.7 ± 0.03 | 26.23 ± 0.04 | 20.08 ± 0.05 |
| Guava jelly (GJ) | 11.4 ± 0.06 | 12.9 ± 0.01 | 13.6 ± 0.07 | 13.1 ± 0.03 | 42.38 ± 0.06 | 33.44 ± 0.04 |
Data is expressed as mean ± standard deviation