数字农科院2.0

Incorporating quercetin nanocrystals in chitosan-polyvinyl alcohol composite film with cinnamon essential oil loaded Pickering emulsions for enhanced controlled release properties

文献类型： 外文期刊

作者： Simin Fan;Dequan Zhang;Qingfeng Yang;Chaoqiao Zhu;Aurore Richel;Marie Laure Fauconnier;Cheng Li;Ming Tian;Xin Li;Chengli Hou

作者机构：

关键词： Antimicrobial packaging;Chitosan-polyvinyl alcohol;Meat preservation;Pickering emulsions;Quercetin nanocrystals

期刊名称： Food Packaging and Shelf Life

ISSN： 2214-2894

年卷期： 2025 年 52 卷

页码：

收录情况： SCIE（2025版）

摘要： Despite extensive efforts in developing bio-based active packaging, most current films still suffer from poor release kinetics of active ingredients. This study presents an innovative strategy to improve the controlled-release performance of antimicrobial packaging by incorporating cinnamon essential oil (CEO)-loaded Pickering emulsions as carriers and quercetin nanocrystals (QNs) as nanofillers into a chitosan-polyvinyl alcohol composite (CS-PVA/PEs/QNs). The resulting CS-PVA/PEs/QNs film exhibited excellent mechanical properties, achieving a tensile strength of 39.09 ± 0.46 MPa. We attribute this enhancement to a strengthened hydrogen-bonding network among QNs, the CEO-loaded Pickering emulsions, and the CS-PVA matrix, as confirmed by FTIR, XRD, and TGA. Furthermore, the film demonstrated remarkable antimicrobial activity (>99.99 % inhibition against food spoilage bacteria) and a significantly enhanced antioxidant capacity (approximately five-fold increase). The incorporation of QNs effectively modulated the CEO release kinetics, which followed a Fickian diffusion mechanism in high-fat food simulants, thereby suggesting a potential for long-term antimicrobial efficacy. Owing to these controlled-release antimicrobial characteristics, the CS-PVA/PEs/QNs film proved highly effective in preserving fresh meat, extending its shelf life to 11 days at 4 °C. This work provides a promising strategy for designing advanced controlled-release systems and contributes to the development of high-performance antimicrobial packaging.

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