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<p>The increasing demand for sustainable packaging solutions has driven advancements in edible films as environmental friendly alternatives for traditional plastics. In this study, we have carried out the formulation and evaluation of a ready-to-brew edible film incorporating a phloretin-sulfobutylether-β-cyclodextrin inclusion complex (PHL/SBE-β-CD-IC) in a polymeric matrix composed of pullulan, poly(vinyl alcohol)-poly(ethylene glycol) graft copolymer (Kollicoat® IR), and citric acid. A Quality by Design (QbD) approach&#xa0;was use to optimize&#xa0;the film composition, and the solvent casting technique was applied for development of&#xa0;the films. Various physicochemical analysis, including FTIR, XRD, and TGA, confirmed the molecular interactions and the formation of a thermally stable and amorphous film matrix. The films containing PHL-IC demonstrated improved mechanical strength, lower water vapor permeability, higher water solubility, and antimicrobial properties compared to films with native PHL. Colorimetric analysis indicated minimal visual changes in the PHL-IC films, which demonstrated better dispersion. Coffee pouches made from the PHL-IC loaded films disintegrated rapidly in hot water within 2&#xa0;min, presenting a convenient and waste-free option for instant beverage preparation. Short-term stability studies demonstrated stability under low humidity conditions, while antimicrobial tests revealed a reduction of approximately 47% in total bacterial count compared to blank film. Electronic tongue analysis indicated that the edible film packaging maintained the fundamental taste profile of coffee<b>,</b> with only minor modulation of specific taste attributes. These findings highlight the potential of this composite film system as an active packaging material for single-serve instant beverage applications.</p>

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Development of a Sustainable Ready-to-Brew Edible Film Using Pullulan/PVA-PEG Copolymer for Instant Beverage Applications

  • 期刊论文

  • 发表日期：

    2026年2月19日

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  • Nabab Khan,
  • Neha Rana,
  • Ankit Saneja

摘要

The increasing demand for sustainable packaging solutions has driven advancements in edible films as environmental friendly alternatives for traditional plastics. In this study, we have carried out the formulation and evaluation of a ready-to-brew edible film incorporating a phloretin-sulfobutylether-β-cyclodextrin inclusion complex (PHL/SBE-β-CD-IC) in a polymeric matrix composed of pullulan, poly(vinyl alcohol)-poly(ethylene glycol) graft copolymer (Kollicoat® IR), and citric acid. A Quality by Design (QbD) approach was use to optimize the film composition, and the solvent casting technique was applied for development of the films. Various physicochemical analysis, including FTIR, XRD, and TGA, confirmed the molecular interactions and the formation of a thermally stable and amorphous film matrix. The films containing PHL-IC demonstrated improved mechanical strength, lower water vapor permeability, higher water solubility, and antimicrobial properties compared to films with native PHL. Colorimetric analysis indicated minimal visual changes in the PHL-IC films, which demonstrated better dispersion. Coffee pouches made from the PHL-IC loaded films disintegrated rapidly in hot water within 2 min, presenting a convenient and waste-free option for instant beverage preparation. Short-term stability studies demonstrated stability under low humidity conditions, while antimicrobial tests revealed a reduction of approximately 47% in total bacterial count compared to blank film. Electronic tongue analysis indicated that the edible film packaging maintained the fundamental taste profile of coffee, with only minor modulation of specific taste attributes. These findings highlight the potential of this composite film system as an active packaging material for single-serve instant beverage applications.