Abstract
The fabrication of biodegradable packaging material with active antioxidant capability is an important research area and has gained importance recently. In the present study, biocomposite films were fabricated based on polyvinyl alcohol-corn starch (PVAS) integrated with beetroot stem waste extract (BRS) at 0, 5, 10, 15, and 20% concentrations (w/v). The microstructural characterization, physical and functional properties of the films were evaluated. The incorporation of the extract did not impact the thickness of the films however caused a slight change in the color of the film. FTIR confirmed the intramolecular and intermolecular interactions between the functional groups of PVAS and the BRS. Thermal studies have shown that the incorporation of BRS extract had little effect on the thermal stability of the PVAS films. Field emission scanning electron microscopy (FESEM) study confirms interactions between the bioactive compounds from BRS extract with polyvinyl alcohol-corn starch, which may have enhanced the mechanical properties of films (Tensile strength and elongation at break). The water vapor permeability slightly increased compared to the neat film. The PVAS/BRS20% film has good antioxidant properties compared to neat PVAS film. Developed films demonstrating that they can be used as a packaging material for oxygen-sensitive food products.
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Author would like to sincerely thank the Science and Engineering Research Board (SERB), Government of India, for the financial support provided under the Start-Up Research Grant (SRG) (SRG/2021/001549).
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Princy Kathait: Investigation, formal analysis, visualization, data curation, writing - original draft. PKO: Resources Pardeep Kumar: writing - original draft, manuscript editing, review, formatting KKG: Conceptualization, methodology, resources, manuscript editing and review, supervision, project administration, funding acquisition, revision of manuscript.
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Kathait, P., Omre, P.K., Kumar, P. et al. Development of a PVA-starch Antioxidant Film Incorporating Beetroot Stem Waste Extract for Active Food Packaging. J Polym Environ 31, 4160–4169 (2023). https://doi.org/10.1007/s10924-023-02840-y
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DOI: https://doi.org/10.1007/s10924-023-02840-y