中文摘要：

根据游离基氧化的相关理论．利用红外光谱和紫外光谱分析了大豆油生物柴油中不饱和脂肪酸甲酯分子在氧化过程中的构型变化，提出了不饱和脂肪酸甲酯分子中的双键在氧化过程中会发生顺一反异构化，以及由于双键转移而生成共轭双键的观点。

英文摘要：

The configurational changes and the oxidation mechanisms of unsaturated fatty acid methyl ester molecules in the oxidation process was analyzed, according to the principles of free radical reactions and the results of both infra red spectras and UV spectra. An idea was put forward that, during oxidation, cis-trans isomerization might occur in unsaturated fatty acid methyl ester molecules and conjugated double-bond might produce due to transfer of double-bond.