Table 5. Elemental composition of banana peel at different fermentation duration with SEM.
| Elemental composition | Fermentation duration | |||
|---|---|---|---|---|
| T0 | T1 | T2 | T3 | |
| -----------------------------% weight------------------------------ | ||||
| C | 80.41 ± 6.30 | 79.43 ± 7.28 | 81.43 ± 8.12 | 92.92 ± 8.84 |
| Na2O | 6.72 ± 0.08 | 4.13 ± 0.08 | 2.97 ± 0.02 | 2.56 ± 0.03 |
| Cl | 6.11 ± 0.01 | 5.91 ± 0.06 | 7.81 ± 0.19 | 2.58 ± 0.04 |
| K2O | 1.92 ± 0.07 | 5.60 ± 0.02 | 6.65 ± 0.02 | 0.96 ± 0.06 |
| MgO | 1.18 ± 0.50 | 0.21 ± 0.04 | 0.12 ± 0.03 | 0.17 ± 0.07 |
| SiO2 | 2.49 ± 0.16 | 0.41 ± 0.01 | 0.02 ± 0.01 | 0.56 ± 0.03 |
| P2O5 | 0.35 ± 0.08 | 1.93 ± 0.04 | 0.45 ± 0.01 | 0.03 ± 0.02 |
| SO3 | 0.82 ± 0.09 | 2.37 ± 0.13 | 0.57 ± 0.02 | 0.26 ± 0.03 |
Note: T0 = no fermented banana peel; T1 = banana peel fermented for 6 days; T2 = banana peel fermented for 12 days; and T3 = banana peel fermented for 18 days.