刺五加根茎高沸醇木质素的分离及抗氧化活性  

Lignin separation and antioxidant capacity from Acanthopanax senticosus remainders using high boiling solvent

作　　者：路祺[1] 刘文俊[1] 祖元刚[1] 杨磊[1] 祖柏实[1] 李汶罡[1] 张宝友[1] 朱明华[1] 

机构地区：[1]东北林业大学森林植物生态学教育部重点实验室

出　　处：《北京林业大学学报》2011年第4期124-129,共6页Journal of Beijing Forestry University

摘　　要：以制药生产提取的刺五加根茎剩余物作为原料,采用高沸醇溶剂法提取木质素,探讨了反应温度、反应时间、料液比、乙酸浓度、高沸醇浓度等工艺条件对木质素得率和木质素抗氧化活性的影响,并确定了优化的工艺条件。结果表明:各因素对木质素抗氧化性质的影响差异很大,反应温度因素对高沸醇木质素抗氧化性能影响最显著,其次是反应时间因素;在相同木质素浓度下,高沸醇法木质素抗氧化活性比常规碱法木质素抗氧化活性高,但低于商业合成抗氧化剂BHA。Lignin was extracted fronl the Acanthopanax senticosus remainders, coming from pharmaceutical production process, with high boiling solvent （HBS） （1,4-butanediol） as the extracting reagent. We discussed the effects of reaction temperature, reaction time, solid-liquid ratio, acetic acid concentration and solution concentration of I ,4-butanediol on lignin yield and antioxidant capacity, and determined the optimal process. The results showed that there were significant differences on lignin antioxidant capacity among these factors. The reaction temperature is the most significant factor and the reaction time is the second factor among these factors. At the same lignin solution concentration, the antioxidant capacity ol the lignin extracted with HBS is better than that of Kraft lignin, but much lower than thal of butylated hydroxyanisole （BHA）.

关 键 词：高沸醇 木质素 抗氧化活性 BHA 

分 类 号：S781.42[农业科学—木材科学与技术]