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<p>Food packaging is essential in today’s world, functioning as a key part of the food processing and packaging industry. The current work reports the development of chitosan (Ch) nanocomposite films reinforced with neem extract (NE)–loaded halloysite nanotubes (HNTs) for use in active food packaging. HNTs were used to keep the NE droplets stable. The impact of NE and different concentrations of HNTs on the film’s properties such as physical, barrier, antioxidant, and antibacterial characteristics were investigated. The composite films were evaluated by using Fourier transform infrared (FTIR), scanning electron microscopy (SEM), optical characteristics and antibacterial properties. The optimized Ch/NE film containing 10% HNTs showed improved thickness (0.174&#xa0;mm), reduced moisture content (16.6%), and the lowest water absorption (24.2%), indicating better water resistance. Solubility was reduced to 43.03% from 49.58% in HNT-free films. UV–Vis spectra analysis showed improved light barrier properties, with absorbance at 400&#xa0;nm increasing to 1.701. The 10% HNTs film also exhibited peak antioxidant activity (45.43&#xa0;mg GAE/g) and notable DPPH scavenging ability. Additionally, it showed antibacterial effects against <i>E. coli</i> and reduced cauliflower weight loss during storage to 58.35% ± 2.92%, compared to 74.22% ± 3.71% in unpackaged sample. The synergistic effect of NE and HNTs in the Ch matrix resulted in superior barrier and antioxidant properties, making these nanocomposite films a promising alternative for sustainable food packaging applications.</p>

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Halloysite nanotube–neem extract reinforced polymeric films: a novel approach for food packaging applications

  • 期刊论文

  • 发表日期：

    2025年11月10日

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  • Yashika Jindal,
  • Tushar Yadav,
  • Avinash Singh,
  • Gourav Mishra

摘要

Food packaging is essential in today’s world, functioning as a key part of the food processing and packaging industry. The current work reports the development of chitosan (Ch) nanocomposite films reinforced with neem extract (NE)–loaded halloysite nanotubes (HNTs) for use in active food packaging. HNTs were used to keep the NE droplets stable. The impact of NE and different concentrations of HNTs on the film’s properties such as physical, barrier, antioxidant, and antibacterial characteristics were investigated. The composite films were evaluated by using Fourier transform infrared (FTIR), scanning electron microscopy (SEM), optical characteristics and antibacterial properties. The optimized Ch/NE film containing 10% HNTs showed improved thickness (0.174 mm), reduced moisture content (16.6%), and the lowest water absorption (24.2%), indicating better water resistance. Solubility was reduced to 43.03% from 49.58% in HNT-free films. UV–Vis spectra analysis showed improved light barrier properties, with absorbance at 400 nm increasing to 1.701. The 10% HNTs film also exhibited peak antioxidant activity (45.43 mg GAE/g) and notable DPPH scavenging ability. Additionally, it showed antibacterial effects against E. coli and reduced cauliflower weight loss during storage to 58.35% ± 2.92%, compared to 74.22% ± 3.71% in unpackaged sample. The synergistic effect of NE and HNTs in the Ch matrix resulted in superior barrier and antioxidant properties, making these nanocomposite films a promising alternative for sustainable food packaging applications.