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Process for improving the drainage capacity of a paper pulp using an enzyme obtained from the fungus Humicola insolens or the bacterium Cellulomonas

  • US 5,116,474 A
  • Filed: 10/01/1990
  • Issued: 05/26/1992
  • Est. Priority Date: 10/02/1989
  • Status: Expired due to Term
First Claim
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1. A process for treating paper pulp, comprising:

  • contacting an aqueous suspension of said pulp having a Schopper-Riegler (SR) value of at least 25 determined according to Standard NFQ 50 003 with a cellulase or hemicellulase enzyme or enzyme composition containing a cellulase or hemicellulase enzyme at a pH in the range 7-9, wherein said enzyme or enzyme composition comprises an enzyme obtained from the fungus Humicola insolens or from the bacterium Cellulomonas, and said contacting improves the drainage capacity of said paper pulp.

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