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    Application of thermoalkalophilic xylanase from Arthrobacter sp. MTCC 5214 in biobleaching of kraft pulp

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    Bioresource_Technol_98_897.pdf (189.6Kb)
    Date
    2007
    Author
    Khandeparker, R.
    Bhosle, N.B.
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    Abstract
    A thermoalkalophilic and cellulase free xylanase produced from Arthrobacter sp. MTCC 5214 in solid state fermentation using wheat bran as a carbon source was evaluated for prebleaching of kraft pulp. The UV absorption spectrum of the compounds released by enzyme treatment showed a characteristic peak at 280 nm indicating the presence of lignin in the released coloring matter. Enzymatic prebleaching of kraft pulp showed 20 % reduction in kappa number of the pulp without much change in viscosity. Enzymatic treatment reduced the amount of chlorine by 29 % without any decrease in brightness. The viscosity of xylanase treated pulp was 4.0 p. where as of the pulp treated exclusively with chlorine was 4.1 p.
    URI
    http://drs.nio.org/drs/handle/2264/527
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