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Purification and characterization of xylanase from a thermophilic Streptomyces sp.K37

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Mansour F. A. , Shereif A. A. , Nour El-Dein M. M. , Abou-Dobara M. I. , Ball A. S.

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Extracellular xylanase production by Fusarium species in solid state fermentation

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Arabi M. I. E. , Bakri Y. , Jawhar M.

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Fusarium sp. has been shown to be a promising organism for enhanced production of xylanases. In the present study, xylanase production by 21 Fusarium sp. isolates (8 Fusarium culmorum, 4 Fusarium solani, 6 Fusarium verticillioides and 3 Fusarium equiseti) was evaluated under solid state fermentation (SSF). The fungal isolate Fusarium solani SYRN7 was the best xylanase producer among the tested isolates. The effects of some agriculture wastes (like wheat straw, wheat bran, beet pulp and cotton seed cake) and incubation period on xylanase production by F.solani were optimized. High xylanase production (1465.8 U/g) was observed in wheat bran after 96 h of incubation. Optimum pH and temperature for xylanase activity were found to be 5 and 50°C, respectively.