木聚糖酶对马尾松KP浆漂白机理的探索

Study on Xylanase Bleaching of Pinus Massoniana Kraft Pulp

采用常规分析方法对纸浆卡伯值、粘度和戊聚糖含量等进行分析 ,又采用紫外光谱、高效液相色谱、凝胶渗透色谱及扫描电镜等仪器分析方法分别对酶解浆、酶解液及酶解浆稀碱抽出液进行了分析。结果认为 ,木聚糖酶用于化学浆漂白的机理是其降解了残余木质素中的LCC结构和部分木聚糖 ,从而节省了后序化学漂剂的用量 。

The Kappa number,viscosity and pentosan content of pulp were measured with conventional methods.Furthermore,the pulp,the enzymatic hydrolysate,and the alkaline extract from the enzyme degraded pulp were analylzed using UV,HPLC,GPC and SEM,respectively.The results indicate that a part of the xylans and the structure of LCC were degraded by xylanase.Consequently,less chemical bleach agent was required and the brightness of pulp was improved.