In this study, antioxidant capacity of gallic acid and its alkyl esters in emulsion gel was compared with non-gelled emulsion to determine the role of mass transport on their efficiency. Lauryl gallate exhibited higher antioxidant activity than gallic acid and ethyl gallate in emulsion gel and non-gelled emulsion. In emulsion gel, the synergistic effects in the initiation stage for gallic acid + ethyl gallate, gallic acid + lauryl gallate, and ethyl gallate + lauryl gallate were 78.28 %, 68.46 %, and 60.04 %, respectively. In non-gelled emulsion, the synergistic effects were 52.78 %, 39.02 %, and 22.30 %, respectively. In both emulsion gel and non-gelled emulsion, the longest induction period and propagation period was observed in samples containing gallic acid + lauryl gallate. The effectiveness of antioxidants in emulsion gel was lower than non-gelled emulsion. This reduction in antioxidant activity can be due to the limited ability of antioxidants to be transferred to the interfacial area.

在这项研究中，将没食子酸及其烷基酯在乳液凝胶中的抗氧化能力与非凝胶乳液进行了比较，以确定传质对其效率的作用。没食子酸月桂酯在乳液凝胶和非凝胶乳液中表现出比没食子酸和没食子酸乙酯更高的抗氧化活性。在乳液凝胶中，没食子酸+没食子酸乙酯、没食子酸+没食子酸月桂酯、没食子酸乙酯+没食子酸月桂酯在引发阶段的协同增效分别为78.28%、68.46%和60.04%。在非凝胶乳液中，协同效应分别为52.78%、39.02%和22.30%。在乳液凝胶和非凝胶乳液中，在含有没食子酸+没食子酸月桂酯的样品中观察到最长的诱导期和增殖期。乳液凝胶中抗氧化剂的有效性低于非凝胶乳液。这种抗氧化活性的降低可能是由于抗氧化剂转移到界面区域的能力有限。