摘要
利用两种漆酶或漆酶/介体系统处理硫酸盐竹浆,并进行TCF漂白。结果表明,硫酸盐竹浆进行漆酶/介体系统处理的OLQP漂白,漂白浆可以达到与传统的CEH漂白相近的白度,并且保持了更好的纸浆强度;从白腐菌HG产生的漆酶在HBT存在下处理硫酸盐竹浆,经OLQP漂白后,浆的白度可达80.7%ISO,黏度在800mL·g^(-1)以上。在没有外加介体的情况下,该漆酶处理纸浆仍具有较好的脱木素效果,经OL^0QPL^0,(无外加介体)漂白后,纸浆白度可达76.7%ISO,比OQP漂后浆的白度提高23.2%ISO。同时以苄甲基木素模型物藜芦醇为例,结合商品漆酶考察了白腐菌HG酶液催化氧化黎芦醇的反应动力学。
The kraft bamboo pulp was treated with two laccases alone or combined with HBT （1-hydroxy-benzotriazole）, subsequently bleached with QP sequences. The results showed that the pulp lost less viscosity with OLQP bleaching sequence compared with CEH bleaching when the pulps were bleached to the same brightness. The oxygen deliguified kraft bamboo pulps treated with the laccase from a white rot fungus HG in the presence of HBT can be bleached with QP to brightness 80.7 %ISO and viscosity 800 mL·g^-1 Moreover, the laccase from the white rot fungus HG can degrade lignin without HBT. The pulp was bleached in OL^.QP （without HBT） to brightness 76.7% ISO, which was 23.2 %ISO higher than that in OQP bleaching. It also studied the catalytic oxidation kinetic of veratryl alcohol by the laccase from white rot fungus HG.
出处
《纸和造纸》
北大核心
2007年第2期28-32,共5页
Paper and Paper Making
基金
国家自然科学基金(20477046
30270040)资助课题。
关键词
漆酶
漆酶
介体系统(LMS)
硫酸盐竹浆
TCF漂白
黎芦醇
laccase
Laccase/Mediator system
kraft bamboo pulp
totally-chlorine-free bleaching
veratryl alcohol
