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| 耐热木聚糖酶助漂针叶木硫酸盐浆的研究 | |
| 引用本文： | 李秀婷,李里特,江正强,杨绍青,冯文英,范景阳.耐热木聚糖酶助漂针叶木硫酸盐浆的研究[J].北京工商大学学报(自然科学版),2005,23(6):1-5. |
| 作者姓名： | 李秀婷 李里特 江正强 杨绍青 冯文英 范景阳 |
| 作者单位： | 1. 北京工商大学,化学与环境工程学院,北京,100037 2. 中国农业大学,食品科学与营养工程学院,北京,100083 3. 中国制浆造纸研究院,北京,100020 |
| 摘 要： | 探讨了嗜热真菌耐热木聚糖酶助漂针叶木硫酸盐浆的应用前景.着重研究了应用耐热木聚糖酶进行生物助漂的酶用量、酶处理的pH值以及漂白用氯量等影响因素.结果表明,在不影响纸浆的各项性能的情况下,经酶处理的纸浆白度相比对照增加1.06%~5.11%ISO.同时,酶处理纸浆漂白时可减少漂白用氯量.另外,在偏碱性条件下进行酶处理对纸浆漂白效果的影响较为显著.纸浆纤维的扫描电镜结果显示,酶未对纤维造成损伤,而是改善了纸浆纤维的可漂性.该耐热木聚糖酶非常适宜应用于酶助漂. |
| 关 键 词： | 耐热木聚糖酶 助漂 针叶木硫酸盐浆 |
| 文章编号： | 1671-1513（2005）06-0001-05 |
| 收稿时间： | 2005-05-23 |
| 修稿时间： | 2005年5月23日 |
BIOBLEACHING EFFECT OF THERMOSTABLE XYLANASE OF T. LANUGINOSUS ON KRAFT PULP |
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| LI Xiu-ting,LI Li-te,JIANG Zheng-qiang,YANG Shao-qing,FENG Wen-ying,FAN Jing-yang.BIOBLEACHING EFFECT OF THERMOSTABLE XYLANASE OF T. LANUGINOSUS ON KRAFT PULP[J].Journal of Beijing Technology and Business University:Natural Science Edition,2005,23(6):1-5. | |
| Authors: | LI Xiu-ting LI Li-te JIANG Zheng-qiang YANG Shao-qing FENG Wen-ying FAN Jing-yang |
| Institution: | 1. College of Chemical and Environmental Engineering, Beijing Technology and Business University, Beijing 100037, China; 2. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China ; 3. China National Pulp and Paper Research Institute, Beiiing 100020. China |
| Abstract: | The potential application of the thermostable xylanase was further evaluated in biobleaching of kraft pulp. During biobleaching, the effect of enzyme charge, pH values, chlorine charge was investigated. The brightness of bleached pulps from the xylanase pretreated kraft pulp was 1.06%-5.11% ISO higher than that of the control. The result demonstrated that the crude xylanase preparation was at least as effective in enhancing brightness with concomitant preservation of paper strength properties. Chlorine dioxide consumption was reduced with xylanase-pretreated pulps while still maintaining brightness at the control level. Besides, pretreatment of pulp with the xylanase was also effective at an alkaline pH as high as pH 11.0. Scanning electron microscopy revealed significant surface modification of kraft pulp fibres without marked fibre disruptions. However, the xylanase does have the advantage of being active and stable at 65 ~C and at neutral to alkaline pH values appropriate for applications in paper pulp processing. |
| Keywords: | thermostable xylanase biobleaching kraft pulp |
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