Xylanase-screening and biosynthesis from Aspergillus tamarii

TLDR: Xylan is the most abundant renewable non-cellulosic polysaccharide present on earth and is a major constituent of plant cell walls and constitutes around 20-30 % of the dry weight of tropical hardwood and annual plants.

Abstract: Microbial enzymes have shown tremendous potential for different applications. Over the years due to their remarkable features enzymes have occupied the centre stage of all the biochemical and industrial processes. Enzymes can carry out their myriads of biochemical reactions under ambient conditions, which makes their use ecofriendly and often the best alternative to polluting chemical technologies. Enzymatic treatment provides the same level of output as is achieved through conventional methods that use harsh chemicals. The twentieth century saw an unprecedented expansion in the field of enzyme kinetics because new fields like microbiology and biotechnology have rapidly begun to gain ground. Therefore, usage of enzymes at various industrial levels has also gained momentum. Xylan is the most abundant renewable non-cellulosic polysaccharide present on earth. It is a major constituent of plant cell walls and constitutes around 20-30 % of the dry weight of tropical hardwood and annual plants. Studies reveal that xylan forms an interphase between lignin and other polysaccharides. It is mainly present in the secondary cell wall and covalently linked with lignin phenolic residues and other polysaccharides such as pectins and glucans.