Research Article

Production and Partial Characterization of an Alkaline Xylanase from a Novel Fungus Cladosporium oxysporum

Table 2

Effect of metal ions on xylanase production by C. oxysporum GQ-3 at 30°C under submerged fermentation for 5 d.

Metal ions (mM)Xylanase activity (U/mL)

Control34.74 ± 1.78
K+ (1 mM)36.78 ± 1.62
Ca2+ (1 mM)36.41 ± 2.11
Ca2+ (5 mM)46.75 ± 1.92
Mg2+ (1 mM)38.39 ± 0.53
Mg2+ (5 mM)53.04 ± 1.53
Fe2+ (1 mM)42.75 ± 1.83
Cu2+ (1 mM)0.24 ± 0.15
Co2+ (1 mM)33.81 ± 0.74
Mn2+ (1 mM)36.32 ± 0.92

Media compositions/g/L: wheat bran 5.0 and yeast extract 1.0.