Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (7): 42-46.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Effect of Xylanase Treatment on Content of Hexenuronic Acid in Pulp

Li Hai-long1  Chen Jia-chuan2  Zhan Huai-yu1  Fu Shi-yu1  Yang Gui-hua1   

  1. 1. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China; 2. Shandong Key Laboratory of Pulp and Paper Engineering, Shandong Institute od Light Industry, Jinan 250353, Shandong, China
  • Received:2007-03-20 Online:2008-07-25 Published:2008-07-25
  • Contact: 李海龙（1979-），男，博士生，主要从事制浆化学与生物化学的研究． E-mail:1ihailong1979@163．com
  • About author:李海龙（1979-），男，博士生，主要从事制浆化学与生物化学的研究．
  • Supported by:

    国家973计划资助项目（2007CB210201）

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Abstract:

Xylanase was used to treat pulp for the purpose of reducing the hexenuronic acid content. The results indicate that xylanase treatment is effective in reducing the hexenuronic acid content, that with a xylanase dosage of 10U/g, the contents of hexenuronic acid in wheat straw pulp, Triploid of Populus Tomentosa pulp and eucalyptus pulp decrease respectively by 3.46, 7.83 and 7.71 μmol/g, and that, with the increase of xylanase dosage within a range of 0 - 15 U/g, the content of hexenuronic acid in wheat straw pulp gradually decreases while that in Triploid of Populus Tomentosa pulp decreases first and then keeps almost constant when the xylanase dosage reaches 10 U/g.

Key words: hexenuronic acid, xylanase, pulp, Kappa number