木腐菌胞外酶漂白蔗渣硫酸盐浆  

Peroxide Bleaching of Bagasse Kraft Pulp with Enzymes Pretreatment

作　　者：黄峰[1] 陈嘉翔[1] 詹怀宇[1] 高培基[2] 

机构地区：[1]华南理工大学造纸与环境工程国家重点实验室,广州510641 [2]山东大学微生物技术国家重点实验室,济南250100

出　　处：《中国造纸学报》1999年第B10期57-62,共6页Transactions of China Pulp and Paper

基　　金：国家自然科学基金;广东省自然科学基金

摘　　要：利用木腐菌PhanerochaetechrysosporiumME446和LIP14菌株所产胞外酶结合H2O2对蔗渣硫酸盐浆进行几种漂序漂白实验,结果表明酶处理段放在氧脱木素后漂白效果较好;ME446酶和LIP14酶处理使蔗渣硫酸盐浆氧脱木素浆终漂白度分别比对照提高42%ISO和60%ISO,LIP14酶漂白效果好于ME446酶,表明锰依赖过氧化物酶(MnP)在硫酸盐浆漂白中作用重要;木腐菌胞外酶中纤维素酶活力有损漂白浆强度,应用中应予以控制;酶处理结合碱抽提能有效降低漂白浆卡伯值,但漂白浆终漂白度不一定因此有所提高。Peroxide bleaching of bagasse kraft pulp with enzyme pretreatment was investigated. The extracellular enzyme employed was isolated from wood rot fungi namely phanerochaete chrysosporium ME446 and LIP14.The results obtained showed that such enzyme pretreatment proved to be beneficial to the subsequent peroxide bleaching. Brightness gains in the enzyme treated H2O2 bleached pulp were claimed to be 4.2% and 6.0% for LIP14 and ME446 respectively, indicating LIP14 being superior to ME446. It was also claimed that 7%ISO brightness gain can be obtained with MnP activated LIP14. It was noticed that cellulose contamination tended to bring about negative effects on the kappa number of the enzyme treated pulp, suggesting that the enzyme employed should be comparatively free from cellulose . When the enzyme treated H2O2 bleached pulp was subjected to alkali extraction, decreases in the kappa number of the pulp were noted, but it did not always mean any increase in pulp brightness.

关 键 词：漂白浆 硫酸盐浆 蔗渣 酶处理 白度 漂白效果 氧脱木素 胞外酶 木腐菌 过氧化物酶 

分 类 号：TS745[轻工技术与工程—制浆造纸工程] S646[农业科学—蔬菜学]