Article ID Journal Published Year Pages File Type
685939 Bioresource Technology 2006 5 Pages PDF
Abstract

An alkalistable endoxylanase from Streptomyces cyaneus SN32 was applied in bleaching of wheat straw enriched soda pulp. The xylanase dose of 10 IU g−1 moisture free pulp exhibited maximum bleach boosting of soda pulp (pH 9.5–10.0) optimally at 65 °C after 2 h of reaction time. Pre-treatment of pulp with xylanase and its subsequent treatment with 6% hypochlorite reduced the kappa number by 8.7%, enhanced the brightness index by 3.56% and improved other paper properties such as tear index and burst index. The enzymatically-prebleached pulp when treated with 10% reduced level of hypochlorite (5.4%) gave comparable brightness of resultant hand sheets to the fully bleached pulp (6% hypochlorite).

Related Topics
Physical Sciences and Engineering Chemical Engineering Process Chemistry and Technology
Authors
, ,