Table 2 Quantitative biodegradation of caffeine by A. sydowii and A. niger on 5, 10 and 15th day
Reaction time (d) | Fungal dry mass (g) | Cacaffeine (mg/L) | Ca theophylline (mg/L) | % of caffeine degraded b |
|---|---|---|---|---|
A. sydowii NRRL250 (600 mg/L of caffeine) | ||||
5 | 0.23 ± 0.02 | 431.5 ± 39.7 | 40.4 ± 1.0 | 28.1 ± 6.6 |
10 | 0.24 ± 0.02 | 134.8 ± 6.5 | 209.9 ± 22.6 | 77.5 ± 1.1 |
15 | 0.22 ± 0.01 | 3.7 ± 0.8 | 262.6 ± 20.7 | 99.4 ± 0.1 |
A. niger NCBT110A (600 mg/L of caffeine) | ||||
5 | 0.28 ± 0.03 | 592.6 ± 3.1 | NF | 1.2 ± 0.5 |
10 | 0.29 ± 0.02 | 580.0 ± 2.9 | NF | 3.3 ± 0.5 |
15 | 0.27 ± 0.01 | 577.3 ± 6.0 | NF | 3.8 ± 1.0 |