漆酶/介体体系生物漂白的影响因素及漂白效果  

Affecting Factors and Bleaching Results of Laccase/Mediator System Biobleaching

作　　者：付时雨[1] 詹怀宇[1] 周毅[1] 岳保珍[1] 何婉芬[1] 余惠生[2] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广州510641 [2]中国科学院广州化学研究所纤维素化学开放实验室,广州510650

出　　处：《中国造纸学报》2000年第B12期59-67,共9页Transactions of China Pulp and Paper

基　　金：国家自然科学基金 !(2 9770 10 );广东省自然科学基金! (970 494;990 748);教育部重点科技项目资助课题

摘　　要：利用漆酶与介体构成漆酶 /介体 (Laccase/MediatorSystem ,LMS)系统对尾叶桉硫酸盐浆进行生物漂白 ,探索生物处理最佳条件。并对两种不同硬度的纸浆进行漂白 ,结果表明 ,经L/MQP漂白后 ,常规硫酸盐浆的白度可达 81 7%ISO ,氧脱木素后低硬度的纸浆白度可达Laccase in the presence of NHA was used in biobleaching of E.urophylla kraft pulp. It was found that the optimum conditions for laccase mediator system treatment were: pH 5.0,temperature 50℃,reaction time 2 h,the charge of laccase 2.5U/g pulp,NHA 0.01g/g and oxygen pressure 0.3MPa respectively. High kappa CK pulp and low kappa O EMCC pulp were delignified with LMS and bleached with hydrogen peroxide. The result shows that CK pulp and O EMCC pulp can be bleached to 81.7%ISO and 87%ISO brightness respectively by L/MQP sequence.

关 键 词：生物漂白 硫酸盐浆 漂白效果 漆酶/介体体系 纸浆 氧脱木素 白度 尾叶桉 利用 影响因素 

分 类 号：TS745[轻工技术与工程—制浆造纸工程] TS192