C - Chemistry – Metallurgy – 12 – N
Patent
C - Chemistry, Metallurgy
12
N
C12N 15/56 (2006.01) C12N 1/20 (2006.01) C12N 9/24 (2006.01) C12N 9/28 (2006.01) C12N 9/44 (2006.01) C12N 9/56 (2006.01) C12N 15/75 (2006.01) C12N 15/90 (2006.01) C12S 3/08 (2006.01) D21C 5/00 (2006.01) D21C 9/10 (2006.01)
Patent
CA 2128050
A purified xylanase derived from B. Pumilus PRL B12 is disclosed. This xylanase is efficient for use in the biobleaching of wood pulp, permitting a strong reduction in the quantity of chlorine used and AOX compounds produced in classical and ECF wood pulp bleaching sequences as well as the quantity of ozone used in TCF sequences. The gene coding for the xylanase was isolated and purified and used to construct an expression vector therefor. A recombinant host strain of B. licheniformis is also disclosed which is efficient for expressing heterologous enzymes, including the xylanase when transformed by the expression vector.
Amory Antoine
Andre Christophe
de Buyl Eric
Detroz Rene
Lahaye Andree
Genencor International Inc.
Robic
Solvay (societe Anonyme)
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