摘要
为解决常规汉麻脱胶后废液排放污染环境的问题,提出汉麻麻皮的超声波预处理-草酸铵-生物复合酶联合脱胶工艺。探讨超声波预处理时的功率、时间,草酸铵处理的浓度、温度、时间等因素对汉麻脱胶效果的影响。超声波预处理的最佳条件为:超声波工作频率40 kHz、功率120 W、温度50℃、时间35 min。草酸铵处理的最佳条件为:浴比1∶30、质量浓度4 g/L、温度100℃、时间50 min。汉麻麻皮脱胶后,将果胶从脱胶液中回收,分析得到果胶提取的最佳条件为:调节脱胶液pH至4.5,浓缩至脱胶液体积的15%。使用与浓缩液相同体积、体积分数为95%的无水乙醇作为沉淀剂,沉淀2 h。红外测试表明,获得的提取物为果胶。
In order to solve the problem of waste liquid pollution caused by conventional hemp degumming,a green degumming process of ultrasonic pretreatment-ammonium oxalate-bio-complex enzyme is proposed.The effects of power and time of ultrasonic treatment,concentration,temperature and time of ammonium oxalate treatment on the degumming effect of hemp are investigated.The optimal conditions for ultrasonic pretreatment are:frequency of 40 kHz,power of 120 W,temperature/of 50℃and time of 35 min.The optimum conditions for degumming of the hemp,the pectin is recovered from the degumming solution.The optimum conditions for the extraction of pectin are:adjusting the pH value of the degumming solution to 4.5,concentrating its volume to 15%;precipitate for 2 hours using the absolute ethanol of 95%with the same volume as the precipitant.Infrared testing indicates that the extract obtained is pectin.
作者
张莹琨
郑振荣
张富勇
黄思齐
智伟
ZHANG Yingkun;ZHENG Zhenrong;ZHANG Fuyong;HUANG Siqi;ZHI Wei(School of Textiles,Tiangong Polytechnic University,Tianjin 300387,China;Loftex Industries Ltd.,Binzhou 256600,China)
出处
《上海纺织科技》
北大核心
2019年第12期39-42,46,共5页
Shanghai Textile Science & Technology
基金
中国纺织工业联合会科技指导性项目(2017030)
天津市大学生创新创业训练计划项目(201810058084)
天津科委自然科学基金科技特派员项目(17JCTPJC47800)
关键词
草酸铵
汉麻
脱胶
乙醇
果胶
提取
超声波预处理
生物复合酶
ammonium oxalate
hemp
degumming
ethanol
pectin
extraction
ultrasonic pretreatment
bio-complex enzyme
