Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2002.1309.1310Aspergillus niger GCBMX-45]]>HaqIkram-ul- EhsanAmna Ahmad ButtWaseem AliSikander 122002512The optimization of cultural condition was studied for the production of xylanase by mutant strain of Aspergillus niger GCBMX-45. Submerged fermentation was carried out in 250 ml Erlenmeyer flasks. Medium containing (%w/v) NaNO3, 0.1; Tween-80, 0.2; NH4Cl, 0.1; KH2PO4, 0.1; MgSO4.7H2O, 0.03; CaCl2.2H2O, 0.1; wheat bran, 2 was used for xylanase production. The enzyme production was maximum (195 U ml-1) at pH 4.5. One percent meat extract was added in medium as an additional organic nitrogen source.]]>Cai, J.M., W. Ke, Z. Jie, L. Yungens and R. Ruipen,2000Tricholomatacceae L.]]>273729731Chen, H., J. Zhu, G. Liang, Z. Yan and S. Zhang,199939350354Gokhale, D.V., S.G. Patil and K.B. Bastawde,1991Aspergillus niger NCIM 1207.]]>3099109Gouda, M.K.,2000Aspergillus tamarii.]]>223137Ilieva, S., A. Atanas, P. Adriana, M. Diliana, P. Rumiana and P. Nadejda,1995Aspergillus awamori K-1.]]>886368Kohli, V., P. Nigam, D. Singh and K. Chaudhary,2001Thermactinomyces thalophilus subgroup C.]]>28606606Kulkarni, N., A. Shendye and M. Rao,199923411456Miller, G.L.,195931426428Cai, J.M., Z. Jie, H. Xiagang and R. Ruipen,1997Aspergillus niger A3 using solid state fermentation.]]>2714