Production of xylanase from an alkali tolerant Streptomyces sp. 7b under solid-state fermentation, its purification, and characterization.

Streptomyces sp. 7b showed highest xylanase activity among 41 bacterial isolates screened under submerged fermentation. The organism grew over broad pH (5-11) and temperatures range (25-55 degrees C) and displayed maximum xylanase production on wheat bran (1230 U/g) under solid-state fermentation.