摘要
研究了以棉短绒为原料制取食品级微晶纤维素的制备工艺.通过对棉短绒进行预处理除杂,采用过氧化氢强化的氧碱蒸煮脱除棉短绒中少量的脂类物质和棉籽壳引入的木素,然后通过酸水解制备微晶纤维素.结果表明,试验制取的微晶纤维素符合食品级微晶纤维素的标准,液比、水解温度、水解时间对产品得率的影响较大.棉短绒水解制取微晶纤维素的最佳工艺条件为:液比1∶7 ,水解温度60 ℃,水解时间40 min,5 %稀碱处理温度80～90 ℃,碱处理时间40 min.
The preparation of food grade microcrystalline cellulose from cotton linter was studied. Cotton linter pulp was made using oxygen-alkali cooking enhanced by hydrogen per- oxide following the pretreatment to remove the impurity; microcrystalline cellulose was ob- tained through acid hydrolysis of cotton liter pulp. The results showed that the microcrystal- line cellulose meets the standards of food grade microcrystalline cellulose, and the yield-to- feedstock ratio, hydrolysis temperature and hydrolysis time have great influence on the yield of the production. The optimal condition is as follows： the yield-to-feedstock ratio, 1 ： 7; hydrolysis temperature, 60 ℃ ; hydrolysis time 40 min, 5 % dilute alkali treatment; temper- ature, 80 ℃ to 90 ℃; alkali processing time, 40min.
出处
《陕西科技大学学报（自然科学版）》
2008年第4期16-20,共5页
Journal of Shaanxi University of Science & Technology
基金
陕西省造纸技术及特种纸品开发重点实验室开放基金项目"棉短绒综合利用技术(05JS28)"
关键词
微晶纤维素
过氧化氢一氧碱法蒸煮
酸水解
棉短绒
microerystalline cellulose
oxygen-alkali cooking
acid hydrolisis
cotton linter
作者简介
徐永建（1970-），男，陕西省西安市人，教授，博士，研究方向：低污染制浆及溶剂制浆技术、功能性纤维素开发
