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
丁俊豪 1王强 1周曼 1余圆圆 1许波 1王平1
作者信息
- 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
- 折叠
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3h;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.
Abstract
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 compos-ite enzyme on ramie gum.The optimized pretreatment conditions were 98℃,sodium perborate 10 g/L,NaOH 2 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 en-zyme 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Key words
ramie degumming/pretreatment/sodium perborate/composite enzyme引用本文复制引用
基金项目
国家重点研发计划项目(2021YFC2104000)
出版年
2024
国家科技期刊平台
NSTL
万方数据