Liu Mengyun, Zhang Yunfeng, Shi Liuxin, Li Penghui, Zhang Bing, Zhang Xiao, Liu Su
College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China.
Hangzhou Ruili Ultrasound Technology Co., Ltd., Hangzhou, Zhejiang 310024, China.
ACS Omega. 2025 May 21;10(21):21350-21360. doi: 10.1021/acsomega.4c11630. eCollection 2025 Jun 3.
The present study explored assisted treatments with different ultrasonic times (0, 5, 10, 15, and 20 min) to evaluate the combined effect of three composite films (cedarwood essential oil, grapefruit essential oil, and white round grapefruit essential oil) on the preservation of goji berries. The results showed that ultrasound-assisted treatment for 10 min significantly improved the mechanical and barrier properties of chitosan/poly-(vinyl alcohol) films. According to this experiment, the preservation effect of the three composite films on Lycium barbarum was compared by the layer-by-layer self-assembly method, and the results showed that chitosan/poly-(vinyl alcohol) film/white round grapefruit essential oil had a strong antimicrobial effect on Aspergillus niger. In addition, the ultrasonic-assisted bilayer film (zein-chitosan/poly-(vinyl alcohol)/white round grapefruit essential oil) could effectively reduce the weight loss rate, decay rate, and malondialdehyde content of L. barbarum at 4 and 25 °C and thus prolong the shelf life. In conclusion, the newly developed zein-chitosan/poly-(vinyl alcohol) bilayer film with white round grapefruit essential oil can be an effective alternative to inedible polymers as a sustainable food packaging solution in food packaging materials.
本研究探索了不同超声处理时间（0、5、10、15和20分钟）的辅助处理方法，以评估三种复合膜（雪松精油、葡萄柚精油和白圆柚精油）对枸杞保鲜的综合效果。结果表明，超声辅助处理10分钟可显著改善壳聚糖/聚乙烯醇膜的机械性能和阻隔性能。根据本实验，采用层层自组装法比较了三种复合膜对枸杞的保鲜效果，结果表明壳聚糖/聚乙烯醇膜/白圆柚精油对黑曲霉具有较强的抗菌作用。此外，超声辅助双层膜（玉米醇溶蛋白-壳聚糖/聚乙烯醇/白圆柚精油）在4℃和25℃下能有效降低枸杞的失重率、腐烂率和丙二醛含量，从而延长其货架期。总之，新开发的含有白圆柚精油的玉米醇溶蛋白-壳聚糖/聚乙烯醇双层膜作为食品包装材料中不可食用聚合物的有效替代品，可成为一种可持续的食品包装解决方案。
