过硼酸钠预处理促进苎麻复合酶脱胶  

Effect of sodium perborate pretreatment on ramie degumming by composite enzyme

作　　者：丁俊豪 王强[1] 周曼 余圆圆 许波 王平 DING Junhao;WANG Qiang;ZHOU Man;YU Yuanyuan;XU Bo;WANG Ping(Key Laboratory of Science&Eco-Textiles,Ministry of Education,Jiangnan University,Wuxi 214122,China)

机构地区：[1]江南大学纺织科学与工程学院生态纺织教育部重点实验室,江苏无锡214122

出　　处：《印染助剂》2024年第7期18-25,共8页Textile Auxiliaries

基　　金：国家重点研发计划项目(2021YFC2104000)。

摘　　要：在苎麻复合酶脱胶工艺中,采用过硼酸钠预处理来提高脱胶效率。以残胶率、白度、束纤维强度和柔软度为主要测试指标,优化了预处理和复合酶处理的工艺条件。结果表明:过硼酸钠预处理提高了复合酶对苎麻胶质的去除能力。优化预处理条件为:温度98℃,过硼酸钠10 g/L,NaOH 2 g/L,EDTA-2Na 1 g/L,Mix 2A 3 g/L,渗透剂JFC-6 1 g/L,时间3 h;复合酶处理选用果胶裂解酶NS-12和木聚糖酶A10,复配比例1∶1,复合酶用量5%,渗透剂JFC-6 1 g/L,pH为11,温度60℃,处理时间12 h。精干麻残胶率为4.9%,白度为70.6,束纤维断裂强度为2.35 cN/dtex,柔软度为14.2捻。In the process of ramie compound enzyme degumming,sodium perborate pretreatment was used to improve the degumming efficiency.The process conditions for pretreatment and composite enzyme treatment were optimized with residual gum rate,whiteness,bundle fiber strength and softness as the main test indexes.The results showed that sodium perborate pretreatment enhanced the removal ability of composite enzyme on ramie gum.The optimized pretreatment conditions were 98 ℃,sodium perborate 10 g/L,NaOH2 g/L,EDTA-2Na 1 g/L,Mix 2A 3 g/L,penetrating agent JFC-6 1 g/L,3 h.The composite enzyme treatment was performed by using pectinolytic enzyme NS-12 and xylanase A10 with the ratio of 1∶1,the composite enzyme dosage of 5%,penetrating agent JFC-6 1 g/L,pH 11,temperature 60 ℃,and treatment time of 12 h.The residual gum content of the refined hemp was 4.9%,the whiteness was 70.6,the fiber bundle breaking strength was 2.35 cN/dtex,and the softness was 14.2 twists.

关 键 词：苎麻脱胶 预处理 过硼酸钠 复合酶 

分 类 号：TS192.552[轻工技术与工程—纺织化学与染整工程]