高沸醇溶剂法提取胡萝卜木质素开放实验设计  

Open Experimental Study on Extraction of Carrot Lignin by High Boiling Solvent

作　　者：唐晓红 TANG Xiao-Hong(Environmental Economics College,Henan Finance University,Zhengzhou 450046,China)

机构地区：[1]河南财政金融学院环境经济学院,河南郑州450046

出　　处：《化学教育（中英文）》2024年第18期91-97,共7页Chinese Journal of Chemical Education

基　　金：河南省科技攻关重点项目(212102210202)。

摘　　要：为提升学生的实验创新探究能力和独立分析解决问题能力,进一步拓展知识面,培养学生的环保意识和团队精神,通过开放实验,让学生全程参与实验的设计、实验材料和仪器设备的选择、废物回收再利用、数据分析、结果讨论等。开放实验以1,4-丁二醇水溶液为溶剂,采用高沸醇溶剂法(high boiling solvent,HBS)从胡萝卜中提取木质素,探索最佳的提取条件,并进行原因分析。结果表明,将胡萝卜干粉投入到质量分数为80%的1,4-丁二醇水溶液中,在210℃、料液质量比为1∶6的条件下蒸煮2 h,木质素收率可达17.14%,回收的高沸醇和水可循环再利用。该开放实验不仅对高沸醇溶剂法提取胡萝卜木质素具有参考意义,而且为高校环境化学实验教学改革提供了新的思路。In order to improve students'ability of experimental innovation and independent problem-solving,further expand their knowledge,cultivate students'awareness of environmental protection and team spirit,through open experiments,let students participate in the design of the experiment,the selection of experimental materials and equipment,waste recovery and reuse,data analysis and result discussion.In the open experiment,1,4-butanediol aqueous solution was used as solvent to extract lignin from carrot by high boiling solvent(HBS).The optimum extraction conditions were explored and the reasons were analyzed.The results show that when the dry carrot powder is put into the aqueous solution of 1,4-butanediol with a mass fraction of 80%,the lignin yield can reach 17.14%after cooking for 2 hours at 210℃and the ratio of material to liquid is 1:6,and the recovered high boiling alcohol and water can be recycled.The open experiment is not only of reference significance for the extraction of carrot lignin by high boiling solvent,but also provides a new idea for the teaching reform of environmental chemistry experiment in colleges and universities.

关 键 词：高沸醇溶剂法 1 4-丁二醇 胡萝卜 木质素 开放实验 

分 类 号：G642.423[文化科学—高等教育学] O636.2-4[文化科学—教育学]