Chemistry: molecular biology and microbiology – Enzyme – proenzyme; compositions thereof; process for... – Hydrolase
Patent
1992-03-25
1994-11-29
Naff, David M.
Chemistry: molecular biology and microbiology
Enzyme , proenzyme; compositions thereof; process for...
Hydrolase
4352535, 435886, C12N 924, C12N 120
Patent
active
053690249
ABSTRACT:
A method of removing color from wood pulp is disclosed. The method comprises the steps of preparing a wood pulp, treating the wood pulp with the xylanase wherein the xylanase is capable of releasing chromophores from the pulp and extracting the wood pulp to remove chromophores. In a preferred form of the invention, the wood pulp is a kraft pulp and the xylanase is selected from the group consisting of xyl 1, xyl 2, xyl 3 and xyl 4. These xylanases are obtained from Streptomyces roseiscleroticus NRRL-11019.
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Pedersen, et al., "Bleach Boosting of Kraft Pulp Using Alkaline Hemicellulases," International Pulp Bleaching Conference, vol. 2 Jun. 11-14, 1991.
Sherker, et al. "Chlorine-Free Bleaching with Cartazyme.TM. HS Treatment," International Bleaching Conference, Jun. 11-19-1991, Stockholm.
Grabski, et al. "Production, Purification, and Characterization of B-(1-4)-Endoxylanase of Streptomyces roseiscleroticus," Applied and Environmental Microbiology, Apr. 191, pp. 987-992.
Grabski Anthony C.
Jeffries Thomas W.
Patel Rajesh N.
Fado John D.
Meller Michael V.
Naff David M.
Silverstein M. Howard
Stockhausen Janet I.
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