Scientia Silvae Sinicae ›› 2007, Vol. 43 ›› Issue (04): 134-136.doi: 10.11707/j.1001-7488.20070424
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Duan Xinfang1,Cao Yuanlin2,Cao Yongjian1,Zhou Guanwu1,Chen Yongsheng2,Zhu Jiaqi1,Zhao Baolu2
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Abstract:
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.
Key words: laccase, Pinus kesiya var. langbianensis, Liquidambar formosana, reactive oxygen species (ROS), free radicals
Duan Xinfang;Cao Yuanlin;Cao Yongjian;Zhou Guanwu;Chen Yongsheng;Zhu Jiaqi;Zhao Baolu. Changes of Intensities of Reactive Oxygen Species (ROS) Free Radicals from Laccase-Treated Woods[J]. Scientia Silvae Sinicae, 2007, 43(04): 134-136.
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URL: http://www.linyekexue.net/EN/10.11707/j.1001-7488.20070424
http://www.linyekexue.net/EN/Y2007/V43/I04/134