Oat is rich in a wide range of phytochemicals with various physico-chemical, colloidal and interfacial properties. These characteristics are likely to influence human lipid metabolism and the subsequent effect on health following oat consumption. The aim of this work was to investigate the impact of oat materials varying in complexity on the lipolysis process. The composition, structure and digestibility of different lipid systems (emulsions, oil bodies and oil enriched in phytosterols) were determined. The surface activities of phytosterols were examined using the pendant drop technique. Differences in lipid digestibility of the oat oil emulsions and the oil bodies were clearly seen. Also, the digestion of sunflower oil was reduced proportionally to the concentration of phytosterols present. This may be due to their interfacial properties as demonstrated by the pendant drop experiments. This work highlights the importance of considering the overall structure of the system studied and not only its composition.

燕麦富含多种具有各种物理化学，胶体和界面特性的植物化学物质。这些特性可能会影响人的脂质代谢以及食用燕麦后对健康的后续影响。这项工作的目的是研究燕麦材料的复杂性对脂解过程的影响。确定了不同脂质系统（乳液，油体和富含植物甾醇的油）的组成，结构和消化率。使用悬滴法检测植物甾醇的表面活性。可以清楚地看到燕麦油乳液和油体在脂质消化率方面的差异。而且，葵花籽油的消化率与所存在的植物甾醇的浓度成比例地降低。这可能是由于悬垂试验所显示的界面性质所致。这项工作突显了考虑所研究系统的整体结构而不只是其组成的重要性。