Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University in Lublin, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland.
Molecules. 2022 Apr 29;27(9):2842. doi: 10.3390/molecules27092842.
Due to the increasing practical use of mixtures of flavonoids with nonionic surfactants the presented studies were based on the measurements of surface tension and conductivity of aqueous solution of the quercetin (Q) and rutin (Ru) in the mixtures with Triton X-114 (TX114) and Tween 80 (T80) as well as the contact angle of model liquids on the PTFE surface covered by the quercetin and rutin layers. Based on the obtained results components and parameters of the quercetin and rutin surface tension were determined and the mutual influence of Q and Ru in the mixtures with TX114 and T80 on their adsorption and volumetric properties were considered. It was found, among others, that based on the surface tension isotherms of the aqueous solution of the single flavonoid and nonionic surfactant, the surface tension isotherms of the aqueous solution of their mixture, the composition of the mixed monolayer at the water-air interface as well as the CMC of flavonoid + nonionic surfactant mixture can be predicted. The standard Gibbs energy, enthalpy and entropy of the adsorption and aggregation of the studied mixtures were also found, showing the mechanism of the adsorption and aggregation processes of the flavonoid + nonionic surfactant mixture.
由于黄酮类化合物与非离子表面活性剂混合物的实际应用越来越多，因此本研究基于对槲皮素（Q）和芦丁（Ru）在与 Triton X-114（TX114）和 Tween 80（T80）混合物中的水溶液的表面张力和电导率的测量，以及模型液体在 PTFE 表面上的接触角进行了测量，该表面被槲皮素和芦丁层覆盖。基于获得的结果，确定了槲皮素和芦丁表面张力的组成和参数，并考虑了 TX114 和 T80 混合物中 Q 和 Ru 对其吸附和体积性质的相互影响。结果发现，例如，基于单黄酮和非离子表面活性剂水溶液的表面张力等温线、其混合物水溶液的表面张力等温线、水-气界面处混合单层的组成以及黄酮+非离子表面活性剂混合物的 CMC 可以预测。还发现了研究混合物的吸附和聚集的标准吉布斯自由能、焓和熵，表明了黄酮+非离子表面活性剂混合物的吸附和聚集过程的机制。
