摘要
本实验以亚油酸为材料,分别采用过氧化产物检测法和拉曼光谱技术对亚油酸的自氧化过程进行监测,从氧化反应的中间产物和底物的结构变化两个角度,对亚油酸的自氧化过程进行分析。为不饱和脂肪酸的过氧化机理研究提供实验证据。结果表明:拉曼光谱技术能够用来研究单分子物质的结构变化,随着自氧化过程的进行,亚油酸的拉曼光谱在谱型和峰强方面都有所变化,能够反映分子内部结构的变化。其时间效应与采用TBA和共轭二烯法测定时的时间效应基本一致。
Taking linoleic acid as the material,linoleic acid oxidation process of self-monitoring was monitored by peroxidation product detecting method and Raman spectra.Self-oxidation process of linoleic acid was analyzed in two angles,the oxidation of production and substrate structural changes.It provides experimental evidence for peroxidation study of unsaturated fatty acid.The results showed that Raman spectroscopy can be used to study single-molecule substance structural changes.With the auto-oxidation process carrying out,the Raman spectra of linoleic acid changes both in spectral pattern and peak intensity.All these changes can reflect the changes in the structure of linoleic acid.Time effect detecting by Raman spectrum is mainly same as that using TBA and conjugated diene method measuring.
出处
《光谱实验室》
CAS
CSCD
北大核心
2010年第5期1951-1955,共5页
Chinese Journal of Spectroscopy Laboratory
基金
农业部农业公益性行业科研专项经费项目"核技术农业应用"资助(200803034)
国家自然科学基金项目资助课题(10505018)
