The current work evaluated the ability of pure 3,4-dihydroxyphenylglycol (DHPG) and hydroxytyrosol (HT) in combination with a commercial phenolic extract from Olea europaea rich in HT to prevent the oxidation of edible vegetable oils. The commercial phenolic extract was highly soluble in all matrices and significantly improved the oxidation stability and delayed the onset of rancidity of oils compared to a control (with no antioxidant). The combinations of DHPG with other natural antioxidants, such as HT and α-tocopherol, showed that it can be a useful supplement to increase the shelf life of sunflower oil. Synergism was observed when DHPG and HT were added in combination. The synergistic effect was directly related to the concentration ratio between both antioxidants. The mixtures containing DHPG/α-tocopherol and DHPG/HT/α-tocopherol also showed effectiveness in delaying oxidation.

目前的工作评估了纯3,4-二羟基苯基乙二醇（DHPG）和羟基酪醇（HT）与来自油橄榄的商业酚类提取物的结合能力富含HT，可防止食用植物油的氧化。与对照（无抗氧化剂）相比，市售的酚类提取物在所有基质中均高度溶解，并显着提高了氧化稳定性并延迟了油酸败的发生。DHPG与其他天然抗氧化剂（例如HT和α-生育酚）的组合表明，它可以作为增加葵花籽油货架期的有用补充剂。当DHPG和HT组合加入时观察到协同作用。协同作用与两种抗氧化剂之间的浓度比直接相关。含有DHPG /α-生育酚和DHPG / HT /α-生育酚的混合物也显示出延迟氧化的效果。