Xylanase was pooled from Aspergillus
niger that was cultivated on czepak dox with addition rice husk. Condition affecting
xylanase production were assessed these included p H, temperature of
cultivation, carbon source, nitrogen source, incubation period, and inoculums
size for both types of culture. Results obtained were as follow ion exchange
DEAD-Cellulose specific activity from solid state fermentation (І, ІІ) were (902.43,3666.6 U/mg),
with yield (0.602,0.212%) and No. of fold (1.24,5.034). The specific
activity from submerged fermentation (P 1, P2) were (1861.76,910 U/mg), with yield (1.033, 0.531%) and No. of fold
(5.570, 2.790). the optimum and stability p H for
enzyme activity type (ІІ) produced by solid state fermentation
(7.0 and 7.0) respectively. the optimum and stability temperature for enzyme type (ІІ) produced by solid state fermentation
50°C and 70 °C respectively. and the optimum and stability p H for enzyme activity type (P1) produced by
submerged (7.0 and 7.0) respectively. the optimum and stability
temperature for enzyme activity type
(P1) produced by submerged fermentation 30
and 60 °C respectively.
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