Fig. 5From: Isolation, characterization and application of theophylline-degrading Aspergillus fungiEffects of theophylline concentrations on 3-methylxanthine production (a, b) and xanthine production (c, d) by theophylline-degrading fungi. Liquid culture assays were performed using TLM-S with different theophylline concentrations inoculated by Aspergillus ustus (a, c) and Aspergillus tamarii (b, d), respectively. Theophylline concentrations were 100 mg/L (filled rhombus), 200 mg/L (filled square), and 300 mg/L (filled triangle). Concentrations of 3-methylxanthine were present by mean value ± standard deviations (SD) of three replicationsBack to article page