Department of Interfacial Phenomena, Faculty of Chemistry, Maria Curie-Skłodowska University, Maria Curie-Skłodowska Sq. 3, 20-031 Lublin, Poland.
Molecules. 2018 Jul 1;23(7):1597. doi: 10.3390/molecules23071597.
Solid⁻liquid interface properties play a crucial role in the adsorption and adhesion of different microorganisms to the solid. There are some methods to inhibit microorganisms’ adsorption at the solid⁻liquid interface and their adhesion to the solid. These methods can be divided into bulk phase and surface modification. They are often based on the surfactants’ effect on the wettability of the solid in a given system, due to the fact that adsorption and wetting properties of the food additive antimicrobial surfactants (sucrose monolaurate and sucrose monodecanoate as well as some other sugar-based ones (-octyl--d-glucopyranoside, -dodecyl--d- glucopyranoside, -dodecyl--d-maltoside)) in the solid-aqueous solution of surfactant-air system were considered. Quantitative description of adsorption of the studied compounds at the solid⁻liquid interface was made based on the contact angle of the aqueous solutions of studied surfactants on polytetrafluoroethylene, polyethylene, poly(methyl methacrylate), polyamide and quartz surface and their surface tension. From the above-mentioned considerations, it can be seen that during the wettability process of the studied solids, surfactants are oriented in a specific direction depending on the type of the solid and surfactant. This specific orientation and adsorption of surfactant molecules at the solid⁻water interface cause changes of the solid surface properties and its wettability, which was successfully predicted in the studied systems.
固液界面性质在不同微生物对固体的吸附和附着中起着至关重要的作用。有一些方法可以抑制微生物在固液界面的吸附及其对固体的附着。这些方法可以分为体相和表面改性。它们通常基于表面活性剂对给定系统中固体润湿性的影响，因为食品添加剂抗菌表面活性剂（单月桂酸蔗糖酯和单癸酸蔗糖酯以及其他一些糖基表面活性剂（-辛基--d-吡喃葡萄糖苷、-十二烷基--d-吡喃葡萄糖苷、-十二烷基--d-麦芽糖苷））在固-水-表面活性剂-空气系统中的吸附和润湿性质。基于研究表面活性剂在聚四氟乙烯、聚乙烯、聚甲基丙烯酸甲酯、聚酰胺和石英表面上的水溶液的接触角及其表面张力，对研究化合物在固液界面上的吸附进行了定量描述。从上述考虑可以看出，在研究中固体的润湿性过程中，表面活性剂根据固体和表面活性剂的类型定向排列。这种表面活性剂分子在固-水界面上的特定取向和吸附导致了固体表面性质及其润湿性的变化，在研究体系中成功地预测了这一变化。
