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    Carboxymethyl cellulose based films enriched with polysaccharides from mulberry leaves (Morus alba L.) as new biodegradable packaging material

    Year: 2023

    Journal: International Journal of Biological Macromolecules, Volume 253, 2023-12-31, page 127633

    Authors: Akhtar, Hafiz Muhammad Saleem; Ahmed, Shakeel; Olewnik-Kruszkowska, Ewa; Gierszewska, Magdalena; Brzezinska, Maria Swiontek; Dembińska, Katarzyna; Kalwasińska, Agnieszka

    Keywords: Bio-degradable; Carboxymethyl cellulose; Mulberry leaves; Packaging film; Polysaccharides

    The objective of this study was to determine the properties of a new active packaging film developed by the addition of mulberry leaves polysaccharides (MLP) into carboxymethyl cellulose (CMC). Biodegradable CMC-MLP films were fabricated by casting method with various concentrations of MLP (1, 5 and 10 % w/w). The addition of MLP into the CMC matrix resulted increased thickness (0.126 to 0.163 mm) and roughness of the films. Also, the decline in moisture content from 27.91 to 14.12 %, water vapor permeability from 8.95 to 5.21 × 10−10 g−1 s−1 Pa−1, and a swelling degree from 59.11 to 37.45 % were observed. With the increasing concentration of MLP, the mechanical properties of the films were improved and higher dispersion of UV light were noted. Fourier transform - infrared spectroscopy (FT-IR) and X-ray diffraction revealed good inter-molecular interaction between CMC matrix and MLP. The prepared films showed excellent thermal stability, antioxidant and antibacterial properties as well as susceptibility to biodegradation in the soil environment. Moreover, it was proved that the films have ability to retard oil oxidation. Overall, it was concluded that CMC-MLP films constitute a promising biomaterial that may be applied as active food packaging.
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