The effects of amphiphilic compounds on the dielectric constant of bulk oils were determined and the utility of the dielectric constant as a reliable parameter for predicting the oxidative stability of edible oils was evaluated. As the content of monoacylglycerols (MAGs), lecithin, and moisture increased, the dielectric constant of modified corn oil increased at different rates, whereas the addition of free fatty acids, including oleic and linoleic acid, decreased the dielectric constant of modified corn oil. Unoxidized fresh bulk oils showed a wide range of dielectric constants, from 8 for canola oils to 33 for flaxseed oils. The dielectric constant showed a strong correlation with the percentage of unsaturated fatty acids in the bulk oils. Oils with low oxidative stability had a high dielectric constant. Overall, the dielectric constant of bulk oils is strongly correlated with the content of amphiphilic compounds, moisture content, and degree of unsaturation of fatty acids.

确定了两亲化合物对散装油介电常数的影响，并评估了介电常数作为预测食用油氧化稳定性的可靠参数的实用性。随着单酰基甘油（MAGs），卵磷脂和水分含量的增加，改性玉米油的介电常数以不同的速率增加，而添加游离脂肪酸（包括油酸和亚油酸）则降低了改性玉米油的介电常数。未氧化的新鲜散装油的介电常数范围很广，从低芥酸菜籽油为8到亚麻籽油为33。介电常数与散装油中不饱和脂肪酸的百分比显示出很强的相关性。具有低氧化稳定性的油具有高介电常数。全面的，