食品科学 ›› 2022, Vol. 43 ›› Issue (17): 272-281.doi: 10.7506/spkx1002-6630-20220217-123

• 包装贮运 • 上一篇    下一篇

茶多酚@沸石咪唑酯骨架材料/壳聚糖/海藻酸钠活性包装膜的制备及表征

蔡月,王梦军,年琳玉,程抒劼,曹崇江,黄志刚   

  1. (1.中国药科大学工学院,江苏 南京 211198;2.北京工商大学化学材料与工程学院,中国轻工业绿色塑料成型技术与质量评价重点实验室,北京 100048)
  • 出版日期:2022-09-15 发布日期:2022-09-28
  • 基金资助:
    江苏省农业科技自主创新资金项目(CX(21)3171);江苏省现代农机装备与技术示范推广项目(NJ2021-20); 北京工商大学中国轻工业绿色塑料成型技术与质量评价重点实验室开放课题(PQETGP2021010)

Preparation and Characterization of Tea Polyphenols @ Zeolitic Imidazolate Framework-8/Chitosan/Sodium Alginate Active Packaging Film

CAI Yue, WANG Mengjun, NIAN Linyu, CHENG Shujie, CAO Chongjiang, HUANG Zhigang   

  1. (1. College of Engineering, China Pharmaceutical University, Nanjing 211198, China; 2. Key Laboratory of Molding Technology and Quality Evaluation of Green Plastics of China National Light Industry, School of Chemical Materials and Engineering, Beijing Technology and Business University, Beijing 100048, China)
  • Online:2022-09-15 Published:2022-09-28

摘要: 本实验以海藻酸钠(sodium alginate,SA)和壳聚糖(chitosan,CS)为成膜基材,并以不同添加量(分别为0%(质量分数,后同)、1%、2.5%、5%)茶多酚(tea polyphenols,TP)@沸石咪唑酯骨架材料(zeolitic imidazolate framework-8,ZIF-8)纳米复合材料为功能性成分,通过层层组装的方式制备TP@ZIF-8/CS/SA复合膜。利用场发射扫描电子显微镜、热重分析仪、差示扫描量热仪、傅里叶红外光谱仪、质构仪、色差仪等对复合膜的形貌、组成进行表征。结果表明,TP@ZIF-8纳米复合材料添加量为5%时改变了CS/SA复合膜的颜色,并且影响了复合膜的微观形态,还增强了复合膜的热稳定性、阻隔性能和机械性能。此外,TP@ZIF-8纳米复合材料的加入使该复合膜表现出良好的抗氧化和抑菌效果。综上,本实验制备出一种具有抗菌和抗氧化的生物可降解活性包装膜,该活性包装膜在食品保鲜领域具有良好的应用前景。

关键词: 茶多酚;壳聚糖;海藻酸钠;抗氧化活性;抑菌活性

Abstract: Using sodium alginate (SA) and chitosan (CS) as film-forming substrates and different concentrations (0%, 1%, 2.5% and 5%) of tea polyphenol (TP) @ zeolitic imidazolate framework-8 (ZIF-8) nanocomposites as a functional component, TP@ZIF-8/CS/SA composite membranes were prepared by layer-by-layer self-assembly. The morphology and composition of the composite films were characterized by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR) spectroscopy, texture analyzer and color different meter. The results showed that addition of TP@ZIF-8 nanomaterial at 5% changed the color, affected the microstructure, and enhanced the thermal stability, barrier performance, and mechanical properties of the composite films. In addition, addition of TP@ZIF-8 nano-composite imparted good antioxidant and antibacterial activity the composite films. Thus, the biodegradable composite active packaging films have good prospects for application in the field of food preservation.

Key words: tea polyphenol; chitosan; sodium alginate; antioxidant activity; antibacterial activity

中图分类号: