木聚糖酶处理麦草浆纤维形态变化的研究  

A study on the morphological structure change of wheat straw pulp treated with xylanase

作　　者：李海龙[1,2] 陈嘉川[3] 詹怀宇[1] 付时雨[1] 杨桂花[3] 韩威华 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室 [2]山东轻工业学院制浆造纸工程省级重点学科山东济南250102 [3]山东轻工业学院 [4]苏柯汉(潍坊)生物工程有限公司

出　　处：《中华纸业》2007年第6期45-47,共3页China Pulp & Paper Industry

基　　金：国家自然科学基金资助(项目编号:20476052)

摘　　要：用扫描电镜观察木聚糖酶处理过的麦草浆的纤维表面形态,发现木聚糖酶处理可以使麦草浆纤维表面的结构发生变化。结果表明:未经木聚糖酶处理的麦草浆纤维硬挺,表面结构较为光滑。随着酶用量的增加,纤维表面越来越粗糙,皱褶和裂隙也越来越多,纤维表面剥落现象进一步加强。当酶用量增加至15U/g时,麦草浆纤维的表面剥落现象非常严重,出现局部裂隙现象直至大面积沟槽结构。还发现木聚糖酶预处理和后处理漂白浆的白度均明显高于未经处理的,而且物理强度较好。The fiber surface morphology of xylanase treated wheat straw pulp was investigated with scanning electron microscope and it was found that xylanase treatment led to the change of fiber surface structure from the wheat straw pulp. The results show that the fiber of untreated wheat straw pulp was stiff and its surface structure was smoother. With the increase of enzyme dosage, the fiber surface became rougher and rougher, and the crinkle, cracks and surface spalling became more and more. When the enzyme dosage was increased to 15U/g, the surface spalling of wheat straw fiber was extremely severe with the appearance of partial crack even large area of groove. It was also found that the brightness of the xylanase pretreated and after treated bleached pulp were both higher than that of the untreated pulp and their physical strength was also better.

关 键 词：木聚糖酶 麦草浆 纤维形态 扫描电镜 

分 类 号：TS713[轻工技术与工程—制浆造纸工程]