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Production of fungal and bacterial cellulase- free ?-1,4-xylanase in submerged cultivation

100%

Udeh K. O. , Wesolowska-Trojanowska M. , Janas Z. , Targonski Z.

nr 4

117-134

An interest in cellulase-free ?-1,4-xylanase production has markedly increased in recent years due to its bio-friendly applications in the pulp and food industry. In the presented paper, the synthesis and function of its regulatory control system in different organisms were highlighted. The influence of various cultivation conditions such as substrate availability, temperature, pH, inducers and agitation on the formation of xylanase in relation to other enzymes was also discussed. Strain modifications by mutation and gene technology, followed by cultivation to obtain a cellulase-free ?-1,4-xylanase were also presented. In addition, applications of xylanase for bleaching in the pulp industry, clarification of beer or juice, maceration of vegetables, improvement of bread quality, liberation of fibres from hemp and flax as well as improvement of animal feeds were mentioned.