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Articles by Vijay Kumar Gupta
Total Records ( 1 ) for Vijay Kumar Gupta
  Sushil Nagar , Anuradha Mittal and Vijay Kumar Gupta
  Bacteria are well known for their ability to secrete extracellular enzymes into the environment. Xylanolytic enzymes are a group of enzymes that hydrolyze xylan and arabinoxylan polymers into smaller sugars. With this objective, a screening medium containing wheat bran, an agro-residue, with high economic competitiveness was developed. In this study, 70 xylanase producing bacteria were isolated from 14 samples of decaying wood, soil, compost etc., collected from different places in India on the basis of their zone of hydrolysis. Among these isolates, five strains (SV-34S, SV-43S, SV-85S, SV-190 and SV-205) were selected on the basis of their hyper production of xylanase. In the selected strains, xylanase activity in submerged and solid state fermentation ranged from 197-341 IU mL-1 and 1405-5302 IU g-1, respectively under un-optimized conditions. Xylanase from the isolated strains was cellulase-free as it exhibited either undetectable or negligible cellulase activity. The method employed for isolation and production of xylanolytic bacteria using wheat bran is cost effective compared to the commercially available xylan in the medium.
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