文献类型：期刊文献

中文题名：漆酶/碳源系统预处理对稻草蒸煮性能的影响

英文题名：Effect of Laccase/Carbon Sources System Pretreatment on the Pulpability of Rice Straw

作者：尤纪雪[1] 陶文娟[1] 冯建良[1] 叶汉林[1] 房桂干[2]

第一作者：尤纪雪

通信作者：You, J.-X.

机构：[1]南京林业大学;[2]中国林业科学研究院林产化学工业研究所

年份：2005

卷号：24

期号：2

起止页码：7-10

中文期刊名：中国造纸

外文期刊名：China Pulp & Paper

收录：CSTPCD;;EI(收录号：2005149025768);Scopus(收录号：2-s2.0-15744381994);北大核心:【北大核心2004】；

语种：中文

中文关键词：生物制浆;漆酶;LCS

外文关键词：biochemical pulping; Laccase; LCS

分类号：TS742

摘要：利用添加少量碳源与漆酶组成的体系对稻草进行预处理 ,研究了预处理的最佳工艺条件、漆酶 /碳源系统 (LCS)与漆酶 /介体系统 (LMS)预处理结果比较及酶处理对后续蒸煮性能的影响。结果表明 :LCS完全可以代替昂贵的LMS来降解稻草中的木素 ;预处理最适条件为pH值 5 . 0 ,温度45℃ ,液比 1∶7,时间 4～ 6h ,酶用量 2 0～ 30IU/g ;与未处理相比 ,当酶用量为 30IU/g,时间 4h条件下 ,预处理后蒸煮的浆料得率提高 4 . 6个百分点 ,裂断长、耐破指数、撕裂指数和白度分别提高34 . 2 %、 2 3 . 8%、 78 . 6 %和 4 . 6 %SBD。
Rice straw was pretreated with Laccase/carbon sources system to improve its pulpability. The optimum condition of Laccase pretreatment, a comparison between Laccase/carbon sources system (LCS) and Laccase/mediator system (LMS), the effect of the pretreatment on AP-AQ cooking of rice straw were investigated. The results indicated that LCS can completely replace the expensive LMS for degrading the lignin in rice straw, the optimum conditions of pretreatment were pH value 5.0, temperature 45℃ ,liquor ratio 1∶7, pretreatment time 4～6 h, enzyme usage 20-30 IU/g.Compared with untreated straw, the pulp yield of straw pretreated with Laccase/carbon sources at enzyme usage 30 IU/g and pretreatment time 4 h increased by 4.6 points; the breaking length, bursting index and tearing index increased by 34.2%, 23.8%and 78.6% respectively; the brightness increased by 4.6 points.