摘要
将蒙古栎木醋液采用静置-过滤-萃取(乙酸乙酯与木醋液体积比1∶1)-旋转薄膜蒸发精制。经气相色谱-质谱(GC-MS)分析,主要由酚类(31.51%)、酮类(27.71%)、酯类(24.77%)、酸类(5.91%)等化合物组成。其中,GC含量最高的化合物是邻苯二甲酸二丁酯(14.27%),其次是苯酚(13.91%)、愈创木酚(9.40%)、(S)-4-乙基-2-恶唑烷酮(7.60%)、对甲酚(6.16%)等。乙酸乙酯精制蒙古栎木醋液的水相、有机相和木醋液原液三者的总还原力、·OH清除率和DPPH·清除率与样液浓度呈量效关系,且综合来看,有机相抗氧化效果最佳,木醋液原液次之,水相最弱。
Mongolian oak wood vinegar was purified by static filtration extraction(the ratio of ethyl acetate to wood vinegar liquid is 1∶1)and rotating film evaporation.The compounds were mainly composed of phenols(31.51%),ketones(27.71%),esters(24.77%)and acids(5.91%)by gas chromatogram-mass spectrometry(GC-MS).The compound with the highest GC content was dibutyl phthalate(14.27%),followed by phenol(13.91%),guaiacol(9.40%),(S)-4-ethyl-2-oxazolidinone(7.60%),p-cresol(6.16%)and so on.The total reducing power,·OH clearance rate and DPPH·clearance rate of aqueous phase,organic phase and wood vinegar were dose-effect relationship with the concentration of the sample solution.In summary,the antioxidant effect of organic phase was the best,followed by wood vinegar stock solution,and the water phase was the weakest.
作者
苏宁
刘志明
王海英
Su Ning;Liu Zhiming;Wang Haiying(School of Forestry,Northeast Forestry University,Harbin 150040,China;College of Material Science and Engineering,Northeast Forestry University,Harbin 150040,China)
出处
《广东化工》
CAS
2024年第6期18-21,共4页
Guangdong Chemical Industry