当前位置: 首页 > 文章 > 有机溶剂提取麦草中木质素的工艺 湖北农业科学 2012,51 (6) 1228-1231
Position: Home > Articles > Study on the Extracting Technology of Lignin from Wheat Straw by Organic Solvent Hubei Agricultural Sciences 2012,51 (6) 1228-1231

有机溶剂提取麦草中木质素的工艺

作  者:
田毅红;李大臣;龚大春
单  位:
三峡大学化学与生命科学学院
关键词:
麦草;乙醇提取;木质素;汽爆;红外光谱
摘  要:
采用有机溶剂法对汽爆麦草中木质素的提取工艺进行了研究,通过正交试验获得最优的工艺条件,采用Bjrkman法对木质素进行纯化,并利用红外光谱进行检测。结果表明,乙醇提取木质素的最佳工艺条件为乙醇体积分数30%(含1g/L NaOH),反应温度160℃,保温时间15 min,此时木质素得率高达35.26%。红外光谱分析发现此木质素含有3种基本结构,愈创木基、紫丁香基和对-羟基苯丙基,其在结构上较好地保留了各种活性基团,有望成为合成其他化工材料的理想原料。
译  名:
Study on the Extracting Technology of Lignin from Wheat Straw by Organic Solvent
作  者:
TIAN Yi-hong,LI Da-chen,GONG Da-chun(College of Chemistry and Life Science,Three Gorges University,Yichang 443002,Hubei,China)
关键词:
wheat straw;ethanol extraction;lignin;steam exploded;IR
摘  要:
Lignin was extracted by organic solvent from exploded wheat straw,purified by Bjrkman method and analyzed by Infrared spectrometry(IR).The extraction conditions were optimized by orthogonal experiment.The results indicated that the optimum extraction conditions were,volume ratio of ethanol,30%(containing 1g/L NaOH);Reaction temperature,160 ℃;Reaction time,15 min.The yield of crude lignin reached 35.26%.IR results showed that the obtained lignin contained 3 basic structures,guaiacyl(G),syringyl(GS) and p-hydroxyphenyl(H).The active groups were well reserved and would be the idea material for synthesis of other chemical materials.

相似文章

计量
文章访问数: 22
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊