摘要
以制药生产提取的刺五加根茎剩余物作为原料,采用超临界反溶剂法(SAS)对高沸醇溶剂法所提取的木质素进行纳米化以及抗氧化活性检测实验。结果表明正交优化实验条件:沉淀反应釜温度35℃,沉淀反应釜压力30MPa,温度差+10℃,木质素溶液浓度0.5mg/mL。通过重复性验证实验,最终得到粒径(0.144±0.03)μm纳米级有机木质素。纳米和未纳米有机木质素DPPH自由基清除能力(EC50值)分别为(0.884±0.02)mg/mL、(0.563±0.02)mg/mL,表明纳米有机木质素DPPH自由基清除能力比未纳米有机木质素有大幅提高。
Lignin was extracted from the Acanthopanax senticosus remainders,coming from pharmaceutical production process,with 1,4-butanediol as an extracting reagent.The supercritical antisolvent(SAS) process was studied to prepare nanoscale lignin and test its antioxidant capacity.The optimal condition by a four-level orthogonal design is as follows:precipitation temperature 35℃,precipitation pressure 30 MPa,temperature difference +10℃ and concentration of lignin solution 0.5 mg/mL.Nanoscale organic lignin with mean particle size of(0.144±0.03) μm was obtained by verification experiments.The EC50 of the nanoscale and non-nanoscale organic lignin on DPPH was(0.563±0.02) mg/mL and(0.884±0.02) mg/mL,respectively.The results indicated that the DPPH scavenging capacity of nanoscale organic lignin is more improved than that of non-nanoscale organic lignin.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2011年第5期69-74,共6页
Journal of Beijing Forestry University
关键词
超临界反溶剂法
纳米粉
有机木质素
抗氧化活性
BHA
supercritical antisolvent
nano-powders
organic lignin
antioxidant capacity
butylated hydroxyanisole(BHA)
作者简介
第一作者:路祺,博士生,工程师。主要研究方向:木质素资源化利用。电话:13946136867Email:luqi42700473@126.com地址:150040黑龙江省哈尔滨市和兴路26号东北林业大学植物生态学教育部重点实验室。
责任作者:祖元刚,教授,博士生导师。主要研究方向:植物化学和植物药研发。电话:0451—82192392Email:zuyuangangnefu@126.com地址:同上。