This work aimed to study the effect of structured oil nanoparticles (SONs) for improving the hydrophobicity of polysaccharide-based edible films as a novel modification approach. SONs were fabricated from sunflower oil (SFO) using ethyl cellulose or monoglyceride as gelator. Farsi gum (FG) was selected as a model polysaccharide to develop edible films. The physicochemical, mechanical, thermal, and morphological properties of FG-based films incorporated with different concentrations (0%, 0.5 %, and 1% (w/w)) of SONs were compared with those of SFO-free (control) and SFO-incorporated FG films. Irrespective of the physical nature of added oil, the water vapor permeability, solubility, swelling ability, and surface hydrophilicity of FG films incorporated with SONs or SFO were significantly decreased. The SFO was more effective than the SONs in improving some hydrophobic properties; however, the flocculation of SFO droplets decreased the water vapor barrier properties. Incorporating SONs resulted in a compact and more uniform surface morphology, while a higher roughness and surface irregularity were observed after modification with SFO. The modified films prepared by incorporating SONs showed appropriate tensile strength and higher flexibility than control film, while those incorporated with liquid SFO droplets were too sticky and stretchy to be subjected to the tensile forces. The thermal stability of modified films was enhanced after incorporating SONs. The results indicated that the key properties of FG films were better improved by incorporating SONs than liquid oil droplets. Therefore, the SONs can be considered as an appropriate candidate for developing novel edible food packaging materials with high moisture barrier characteristics.

这项工作旨在研究结构油纳米颗粒（SONs）作为一种新型的改性方法，以改善多糖基可食用膜的疏水性的作用。SON是由葵花籽油（SFO）使用乙基纤维素或甘油单酸酯作为胶凝剂制成的。选择波斯胶（FG）作为模型多糖来开发可食用薄膜。将掺入不同浓度（0％，0.5％和1％（w / w）SON）的FG基薄膜的理化，机械，热和形态学特性与不含SFO（对照）和SFO的薄膜进行比较-纳入FG电影。不管添加的油的物理性质如何，掺入SONs或SFO的FG膜的水蒸气渗透性，溶解度，溶胀能力和表面亲水性均显着降低。在改善某些疏水性方面，SFO比SON更有效。然而，SFO液滴的絮凝降低了水蒸气阻隔性能。掺入SON会导致紧密而均匀的表面形态，而经SFO改性后观察到更高的粗糙度和表面不规则性。通过掺入SONs制备的改性膜显示出比对照膜适当的拉伸强度和更高的柔韧性，而掺入液体SFO液滴的改性膜太粘且太易拉伸而无法承受拉伸力。掺入SON后增强了改性膜的热稳定性。结果表明，掺入SON可以比液态油滴更好地改善FG薄膜的关键性能。因此，