College of Food Science and Engineering, Jilin University, Changchun 130000, PR China.
School of Food Engineering, Jilin Agriculture Science and Technology College, Jilin 132101, PR China.
Int J Biol Macromol. 2020 Sep 15;159:696-703. doi: 10.1016/j.ijbiomac.2020.05.118. Epub 2020 May 18.
This study aimed to determine the potential of sodium starch octenylsuccinate (SSOS)-based Pickering emulsions incorporated with cinnamon essential oil (CEO) as a vehicle for delivering active biodegradable films to improve their antimicrobial and antioxidant activites. This study explored the combined effects of mixed oils (CEO and corn oils). Particle size distribution, mean drop size, ζ-potential, polymer dispersity index (PDI), and microstructure were determined to confirm emulsion stability. Well-distributed emulsion droplets maintained under a good condition and encapsulated by SSOS resulted in homogeneous and stable emulsions. The obtained mixed oil-loaded Pickering emulsions were incorporated into the SSOS film preparation, and the morphological, physical, and functional characteristics of the active film were studied. An optimal CEO/corn oil ratio decreased tensile strength but improved elongation at break, water vapor permeability, and oxygen permeability. Fourier transform infrared spectroscopy(FTIR) and scanning electron microscopy(SEM) showed that the SSOS membrane matrix is compatible with Pickering emulsions incorporated with mixed oil. Moreover, a significant decrease was observed in loss of CEO by the Pickering emulsion method. This method exhibited antioxidant and antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Bacillus subtilis, indicating that the encapsulation strategy was efficient to protect against loss of CEO during drying and storage.
本研究旨在确定基于辛烯基琥珀酸钠淀粉（SSOS）的 Pickering 乳液与肉桂精油（CEO）结合作为输送活性可生物降解膜的载体的潜力，以提高其抗菌和抗氧化活性。本研究探讨了混合油（CEO 和玉米油）的协同作用。通过测定粒径分布、平均液滴尺寸、Zeta 电位、聚合物分散指数（PDI）和微观结构来确定乳液稳定性。良好条件下稳定的 SSOS 包封乳液滴分布均匀，导致乳液均匀稳定。将所得的混合油负载的 Pickering 乳液掺入 SSOS 薄膜制备中，并研究了活性薄膜的形态、物理和功能特性。最佳 CEO/玉米油比例降低了拉伸强度，但改善了断裂伸长率、水蒸气透过率和氧气透过率。傅里叶变换红外光谱（FTIR）和扫描电子显微镜（SEM）表明，SSOS 膜基质与掺入混合油的 Pickering 乳液相容。此外，Pickering 乳液法显著减少了 CEO 的损失。该方法对大肠杆菌、金黄色葡萄球菌和枯草芽孢杆菌表现出抗氧化和抗菌活性，表明包封策略在干燥和储存过程中有效地保护了 CEO 的损失。
