生物酶前处理在稻秸秆纤维提取中的应用  

BIOLOGICAL ENZYME PRETREATMENT APPLIED TO EXTRACTION OF RICE STRAW FIBER

作　　者：花兆辉[1] 杨丹[1] 孙卫国[1] 

机构地区：[1]西安工程大学纺织与材料学院,陕西西安710048

出　　处：《化纤与纺织技术》2011年第3期9-12,43,共5页Chemical Fiber & Textile Technology

摘　　要：分别用木聚糖酶和果胶酶对稻秸秆进行脱胶预处理,分析了生物酶作为前处理工艺对稻秸秆纤维性能的影响。以纤维残胶率、细度、强度及可挠度为指标,得出了这两种酶处理工艺的相对最优工艺参数。其中木聚糖酶前处理优化工艺为:木聚糖用量10%(owf),温度50℃,时间10 h,pH值为9,浴比1∶30;果胶酶前处理优化工艺为:果胶酶用量8%(owf),温度45℃,时间8 h,pH值为5,浴比1∶30。和单独化学脱胶法比较,采用生物酶预处理可以有效提高稻秸秆纤维的细度和柔软性,同时采用木聚糖酶前处理工艺后提取的稻秸秆纤维性能比果胶酶处理的要好。Xylanase and pectinase were respectively used in the pretreatment of rice straw degumming. We analyzed the influence of biological enzymes on the properties of rice straw fibers. Based on the fibrous residue rate, fineness, strength and flexibility, we obtained the relative optimal process parameters of these two enzymes treatment. The optimization of xylanase pretreatment process is as follows： xylanase dosage of 10% （owl） , temperature of 50 ℃ , time of 10 h, pH value of 9 and liquor ratio of 1 ： 30 ; the optimization of pectinase pretreatment process is as follows： pectinase dosage of 8% （owl） , temperature of 45℃ ,time of 8 h, pH value of 5 and liquor ratio of 1： 30. Compared with separate chemical degumming, biological enzyme pretreat- ment can effectively improve the rice straw fiber fineness, softness and other properties. Meanwhile, the properties of extracted fibers using xylanase pretreatment process is better than that of using pectinase.

关 键 词：稻秸秆 木聚糖酶 果胶酶 残胶率 细度 强度 可挠度 

分 类 号：TQ352[化学工程]