Xylanases: An Overview.
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Date
2013-01
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Abstract
Endo-1, 4-β-xylanase (Endo-β-1, 4-xylan, xylanohydrolase; EC. 3.2.1.8, commonly called
xylanase) is an industrially important enzyme which degrades xylan randomly and
produces xylooligosaccharides, xylobiose and xylose. It is mainly present in microbes and
plants but not in animals. Xylanases from fungal and bacterial sources have been
extensively studied and produced commercially. Its potential use in paper industries has
been discussed which is directly related to reduction in environmental pollution. It has role
in bio-bleaching paper pulp and increasing pulp brightness. Besides, it can be exploited
for ethanol production and as an additive in animal feedstock to improve its nutritional
value. Endo-1, 4-β-xylanase can also be exploited in baking and fruit juice industries.
Here, we reviewed its distribution, structural aspects and industrial/ biotechnological
applications. Besides, we also discussed studies related to cloning of the gene encoding
endo-1, 4-β-xylanase with the objectives of overproducing the enzyme and altering its
properties to suit commercial applications.
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Keywords
Endo-1, 4-β-xylanase, birchwood xylan, animal feedstocks, xylooligosaccharides, paper industries, baking
Citation
Sharma Meeta, Kumar Anil. Xylanases: An Overview. British Biotechnology Journal. 2013 Jan; 3(1): 1-28.