文献类型：期刊文献

中文题名：漆酶活化处理对木材自由基变化的影响

英文题名：Changes of Intensities of Reactive Oxygen Species (ROS) Free Radicals from Laccase-Treated Woods

作者：段新芳[1] 曹远林[2] 曹永建[1] 周冠武[1] 陈永圣[2] 朱家琪[1] 赵保路[2]

第一作者：段新芳

机构：[1]中国林业科学研究院木材工业研究所;[2]中国科学院生物物理研究所

年份：2007

卷号：43

期号：4

起止页码：134-136

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家科技部基础研究重大项目前期研究项目(2001CCA00200);国家自然科学基金项目(30471352)资助

语种：中文

中文关键词：漆酶;思茅松;枫香;活性氧;自由基

外文关键词：laccase ; Pinus kesiya var. langbianensis ; Liquidambarformosana ; reactive oxygen species （ROS） ; free radicals

分类号：S781;Q936

摘要：In order to investigate the changes of free radicals in the suspension liquid of wood treated by laccase, wood powder of Pinus kesiya var. langbianensis sapwood , heartwood and Liquidambar formosana were selected to detect the changes of free radicals after laccase treatment. The laccase treatment parameters were as follows: pH 3.47 and 6.50, 2 hours of laccase incubation, the temperature of 32 ℃ and enzyme dosage 19 U·g -1 dry wood powder. The results showed that there was a significant difference of the intensities of the reactive oxygen species (ROS) free radicals in the aqueous suspension of wood between control and samples treated by laccase. The intensities of ROS free radicals among different woods treated by laccase was marked difference. The intensities of ROS free radicals of Pinus kesiya var. langbianensis sapwood or heartwood treated by laccase were higher than that of Liquidambar formosana.
In order to investigate the changes of free radicals in the suspension liquid of wood treated by laccase, wood powder of Pinus kesiya var. langbianensis sapwood , heartwood and Liquidambar formosana were selected to detect the changes of free radicals after laccase treatment. The laccase treatment parameters were as follows： pH 3.47 and 6.50, 2 hours of laccase incubation, the temperature of 32 ℃ and enzyme dosage 19 U· g^-1 dry wood powder. The results showed that there was a significant difference of the intensities of the reactive oxygen species （ROS） free radicals in the aqueous suspension of wood between control and samples treated by laccase. The intensities of ROS free radicals among different woods treated by laccase was marked difference. The intensities of ROS free radicals of Pinus kesiya var. langbianensis sapwood or heartwood treated by laccase were higher than that of Liquidambarformosana.