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<p>Plastic-based food packaging poses serious environmental and health risks due to its non-biodegradability and potential release of toxic substances. These concerns have intensified the search for sustainable and functional alternatives, bringing bacterial nanocellulose (BNC) into focus as a renewable biomaterial for food packaging. However, successful application of BNC critically depends on the selection of bacterial strains capable of efficient cellulose production and the formation of films with suitable packaging properties. This study reports the isolation and characterization of a novel BNC-producing strain, <i>Novacetimonas hansenii</i> BIK1, from Kombucha prepared with Assam orthodox black tea. Under optimized static culture conditions in HS media, <i>N. hansenii</i> BIK1 exhibited high productivity, forming uniform BNC films. Structural analysis using X-ray diffraction (XRD) revealed a cellulose Iα structure, while Fourier-transform infrared spectroscopy (FTIR) confirmed the presence of functional groups characteristic of pure cellulose. The mechanical properties of the BNC films produced by <i>N. hansenii</i> BIK1 were noteworthy, with a tensile strength of 4.33&#xa0;MPa, Young’s modulus of 274&#xa0;MPa, elongation at break of 80.4% as well as good thermal stability with a major degradation peak at 292&#xa0;°C. These values highlight the film’s balance between strength and flexibility making it suitable for applications in food packaging. The packaging experiment demonstrated BNC films effectively preserved strawberry quality by reducing weight loss, retaining key bioactive compounds, and maintaining acidity compared to polythene and open storage. Their superior barrier and moisture-retention properties delayed senescence. To our knowledge, this is the first report of fruit packaging using BNC film produced by <i>N. hansenii</i>, highlighting their potential as an eco-friendly alternative to plastic packaging.</p>

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Characterization and application of Novacetimonas hansenii BIK1 derived bacterial nanocellulose film for strawberry packaging

  • 期刊论文

  • 发表日期：

    2026年5月23日

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  • Pragya Permita Acharyya,
  • Olympica Das,
  • Anurag Kashyap,
  • Runjun Sarma,
  • Bhaskar Dowarah,
  • Munmi Sarma,
  • Sidananda Sarma,
  • Sazzadur Rahman,
  • Devasish Chowdhury

摘要

Plastic-based food packaging poses serious environmental and health risks due to its non-biodegradability and potential release of toxic substances. These concerns have intensified the search for sustainable and functional alternatives, bringing bacterial nanocellulose (BNC) into focus as a renewable biomaterial for food packaging. However, successful application of BNC critically depends on the selection of bacterial strains capable of efficient cellulose production and the formation of films with suitable packaging properties. This study reports the isolation and characterization of a novel BNC-producing strain, Novacetimonas hansenii BIK1, from Kombucha prepared with Assam orthodox black tea. Under optimized static culture conditions in HS media, N. hansenii BIK1 exhibited high productivity, forming uniform BNC films. Structural analysis using X-ray diffraction (XRD) revealed a cellulose Iα structure, while Fourier-transform infrared spectroscopy (FTIR) confirmed the presence of functional groups characteristic of pure cellulose. The mechanical properties of the BNC films produced by N. hansenii BIK1 were noteworthy, with a tensile strength of 4.33 MPa, Young’s modulus of 274 MPa, elongation at break of 80.4% as well as good thermal stability with a major degradation peak at 292 °C. These values highlight the film’s balance between strength and flexibility making it suitable for applications in food packaging. The packaging experiment demonstrated BNC films effectively preserved strawberry quality by reducing weight loss, retaining key bioactive compounds, and maintaining acidity compared to polythene and open storage. Their superior barrier and moisture-retention properties delayed senescence. To our knowledge, this is the first report of fruit packaging using BNC film produced by N. hansenii, highlighting their potential as an eco-friendly alternative to plastic packaging.