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Table 3 Biodegradation products analysis of caffeine by A. sydowii NRRL250 in a liquid medium with 1200 mg/L of caffeine

From: Biodegradation of caffeine by whole cells of tea-derived fungi Aspergillus sydowii, Aspergillus niger and optimization for caffeine degradation

Reaction time (d)

Ca caffeine (mg/L)

Ca theophylline (mg/L)

Ca3-methylxanthine (mg/L)

% of caffeine degraded

3

994.9 ± 35.2

62.8 ± 11.3

NF

7.1 ± 2.9

6

804.1 ± 26.5

201.2 ± 8.4

28.4 ± 1.5

33.0 ± 2.2

9

566.3 ± 16.5

274.7 ± 14.7

38.4 ± 3.4

52.8 ± 1.4

12

375.3 ± 15.3

426.3 ± 20.8

68.1 ± 6.9

68.7 ± 1.3

15

105.0 ± 16.9

549.4 ± 29.3

178.7 ± 10.8

90.1 ± 3.0

  1. aC Concentration determined by HPLC
  2. All data are presented as mean ± SD. NF not found