| 改良木聚糖酶辅助漂白芦苇浆的工艺研究 |
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| 引用本文： | 欧阳嘉,连之娜,林惊雷,李鑫,宋向阳.改良木聚糖酶辅助漂白芦苇浆的工艺研究[J].南京林业大学学报(自然科学版),2012,36(2):25-28. |
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| 作者姓名： | 欧阳嘉 连之娜 林惊雷 李鑫 宋向阳 |
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| 作者单位： | 南京林业大学化学工程学院,江苏 南京,210037 |
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| 基金项目： | 国家自然科学基金项目，国家重点基础研究发展计划项目，江苏省高校自然科学研究重大项目 |
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| 摘 要： | 采用分子改良后的木聚糖酶对芦苇浆进行生物预处理,考察了改良木聚糖酶辅助漂白的效果。结果表明,酶预处理可以降低CEH三段漂白中氯化C段的氯气用量60%。改良木聚糖酶预处理辅助漂白芦苇纸浆最佳条件为:pH为7.0,温度60℃,浆浓(质量分数)5%,酶用量12μmol/(min.g),预处理时间60 min。在此条件下C段氯用量降至对照的40%时,酶处理漂后样品白度可达到84.0%(ISO),高出对照样的白度3.7%(ISO)。改良木聚糖酶预处理还能够改善纸浆漂后样的物理性能。
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| 关 键 词： | 芦苇浆 改良木聚糖酶 预处理 生物漂白 |
Technological research on biobleaching effect of reed pulp boosted by modified xylanase |
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| OUYANG Jia
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LIAN Zhina
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LIN Jinlei
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LI Xin
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SONG Xiangyang.Technological research on biobleaching effect of reed pulp boosted by modified xylanase[J].Journal of Nanjing Forestry University(Natural Sciences ),2012,36(2):25-28. |
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| Authors: | OUYANG Jia LIAN Zhina LIN Jinlei LI Xin SONG Xiangyang |
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| Institution: | (College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,China) |
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| Abstract: | Reed pulp was pretreated with modified xylanase,and the potential application of modified xylanase in reed pulp biobleaching was evaluated.The results indicated that modified xylanase could reduce chlorine dosage in C-stage up to 60 %.The optimum pretreatment conditions of reed pulp with modified xylanase were as follows: pH 7.0,temperature 60 ℃,pulp consistency 5 %,enzyme dosage 12 μmol/(min·g) and time 60 min.When chlorine consumption in stage C was reduced by 40 % during bleaching,the brightness of bleached pulps from the xylanase pretreated reed pulp reached to 84.0 %(ISO),which increased 3.7 %(ISO) than that of the control.The enzymatic pretreatment with modified xylanase also improved properties of bleached pulp. |
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| Keywords: | reed pulp modified xylanase pretreatment biobleach |
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