复合酶亚麻脱胶及纤维特性表征  

Compound enzymes flax retting and characterizing of fibers

作　　者：田英华[1] 刘晓兰[1] 郑喜群[1] 王路[1] 杜国军[1] 

机构地区：[1]齐齐哈尔大学食品与生物工程学院,黑龙江齐齐哈尔161006

出　　处：《毛纺科技》2017年第6期36-39,共4页Wool Textile Journal

基　　金：黑龙江省自然科学基金项目资助(E201345);齐齐哈尔市科技项目(NYGG-201519)

摘　　要：为研究木聚糖复合酶对亚麻脱胶及脱胶纤维的特性的影响,分别采用木聚糖酶(E1)与果胶裂解酶(E2)、酸性聚半乳糖醛酸酶(E3)和碱性聚半乳糖醛酸酶(E4)的复合酶液进行亚麻脱胶,以单独采用各果胶酶脱胶作对比,研究复合酶对亚麻脱胶的作用,并对复合酶脱胶后亚麻纤维热学性能及纤维微观结构进行了表征。通过对脱胶过程中亚麻纤维的分离度及脱胶后纤维中胶质含量研究显示,复合酶脱胶40 h与相对应的单酶脱胶69 h Fried评分和胶质含量相当;复合酶脱胶后纤维的热性能有所改善,纤维素热分解温度升高,纤维素结晶度提高;复合酶脱胶40 h的亚麻纤维光学显微镜观察显示,E12脱胶所得纤维分散良好,表面光洁。木聚糖复合酶能够有效促进亚麻脱胶,但对脱胶纤维中半纤维素含量影响不大。To research the effect of xyianase on flax retting and properties of fibers, xylanase （El） compounding with pectate lyase （E2）, acidic polygalacturonase （E3） and alkaline polygalacturonase （E4） respectively was used to flax retting, and above pectinase was sole used as contrast. The effect of compound enzymes on flax retting and the properties of retted fibers were researched. The results showed that Fried scores and pectin contents of flax fibers retted 40 h by compound enzymes and 69 h by pectinase respectively were comparative. Retted by compound enzymes the hygroscopic properties of fibers was improved, thermal decomposition temperature of cellulose and degree of crystallinity were all increased. The fibers retted by El2 were dispersed well and smooth. Flax retting could be accelerated by xylanase, but the hemicelluloses content of retted fibers was not influenced.

关 键 词：复合酶 亚麻 纤维 脱胶 

分 类 号：TS123.3[轻工技术与工程—纺织材料与纺织品设计]