稻草碱法制浆前酶预处理工艺的研究  

Enzyme Pre-Extraction Before Rice Straw Alkali Pulping

作　　者：蒋君[1] 薛国新[1] 姚晓红[1] 

机构地区：[1]浙江理工大学材料与纺织学院,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2012年第1期18-22,共5页Journal of Zhejiang Sci-Tech University(Natural Sciences)

摘　　要：以稻草为原料,研究采用木聚糖酶预处理过程中时间、温度、pH值和酶用量等因素对预处理效果的影响。研究得到较适宜的酶预处理工艺条件为:液比1∶20,预处理时间120min,预处理温度50℃,预处理pH值为7,预处理酶用量80IU/g。预处理过程未对溶出木素和溶出半纤维素的结构造成实质性的破坏,溶出木素的苯环结构和溶出半纤维素的木聚糖单元的六元环结构都得到了保存。In this study, the effect of enzyme pre-extraction on rice straw alkali pulping properties is investigated. Some parameters which may affect the pre-extraetion are optimized, such as pre-extraction temperature, pre-extraction time, pre-extraction pH and enzyme charge. The appropriate conditions for enzyme pre-extraction in this pre-extraction path are obtained as follows, liquid-to-solid ratio is 1 ： 20, pre-extraction time is 120 min, pre-extraction temperature is 50℃, pre-extraction pH is 7, enzyme charge is 80 IU/g. The pre-extraction methods have little damage on the basic structure of dissolved lignin and dissolved hemicelluloses. The skeleton of benzene ring of dissolved lignin and the six-membered ring structure of hydroxyl unit of dissolved hemicelluloses has been preserved.

关 键 词：稻草 酶预处理 溶出木素 溶出半纤维素 

分 类 号：TS743.14[轻工技术与工程—制浆造纸工程]