Vo Thuy-Vi, Chou Ya-Yen, Chen Bing-Hung
Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
Department of Leisure and Sports Management, Far East University, Tainan 74448, Taiwan.
Molecules. 2021 Mar 31;26(7):1971. doi: 10.3390/molecules26071971.
Preparation and characterization of microemulsions consisting of a plant-derived alkyl polyglycoside (APG) surfactant and the essential oil of (tea tree) was studied. This nonionic APG surfactant used was Triton CG-110 with a CMC at 1748 ppm at 25 °C. Tea tree oil (TTO) was extracted from tea tree leaves by Triton CG-110-assisted hydrodistillation method. The preparation of the microemulsion was aided by the construction of pseudo-ternary phase diagrams, which were investigated at the different weight ratios of surfactant mixtures (S = Triton CG-110/PPG) as 0.6:1, 1.8:1, 1:0 with hydrodistilled and commercial TTO by water titration method at room temperature. Particularly, structure of microemulsion was identified by electrical conductivity and viscosity. Moreover, shelf stability of some microemulsion made of 1% TTO with various concentration of Triton CG-110/PPG (1.8:1 /) were monitored for over a two-month period with dynamic light scattering. These results showed that microemulsion made of 1% TTO, 9% Triton CG-110/PPG (1.8:1 /) was insensitive with time and temperature of storage.
研究了由植物源烷基多糖苷（APG）表面活性剂和茶树精油组成的微乳液的制备与表征。所使用的这种非离子型APG表面活性剂是Triton CG - 110，在25℃时其临界胶束浓度为1748 ppm。茶树油（TTO）通过Triton CG - 110辅助水蒸馏法从茶叶中提取。微乳液的制备借助于伪三元相图的构建，在室温下通过水滴定法研究了表面活性剂混合物（S = Triton CG - 110/PPG）在不同重量比0.6:1、1.8:1、1:0时与水蒸馏法提取的和市售的TTO形成的情况。特别地，通过电导率和粘度确定微乳液的结构。此外，用动态光散射对由1% TTO与不同浓度的Triton CG - 110/PPG（1.8:1 /）制成的一些微乳液进行了为期两个月的货架稳定性监测。这些结果表明，由1% TTO、9% Triton CG - 110/PPG（1.8:1 /）制成的微乳液对储存时间和温度不敏感。
