Influence of chitosan-capped quercetin nanoparticles on chitosan/poly(vinyl) alcohol multifunctional films: A sustainable approach for bread preservation.
Manjushree Nagaraj Gunaki, Saraswati P Masti, Lingaraj Kariyappa Kurabetta, Jennifer P Pinto, Ajitkumar Appayya Hunashyal, Nagarjun Prakash Dalbhanjan, Ravindra B Chougale, S K Praveen Kumar
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引用次数: 0
Abstract
Food packaging industries are growing to meet consumer demand and prevent pollution by adopting significant biopolymer advancements. Therefore, this study aimed to develop functionally active chitosan (CS)/polyvinyl alcohol (PVA)-based biopolymer films and evaluate the effect of Justicia Adhatoda extract (JAE), pure quercetin (Q), and CS-capped quercetin nanoparticles ((Q)CS NPs) on sustainable bread packaging. CS was successfully loaded onto (Q) by the one-pot method, which was confirmed by light absorption spectroscopy (UV), Fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). The fabricated films were examined using different analytical techniques. FTIR and XRD patterns confirmed that the CS/PVA matrix had molecular interactions through hydrogen bonds with JAE, (Q), and (Q)CS NPs. SEM micrograms revealed a uniform distribution and denser surface with small aggregations by adding (Q)CS NPs. The (Q)CS NPs added CPE(Q)CS nanocomposite exhibited excellent UV light shielding (99.99 % UV-A and UV-B blocking), water resistance ability (contact angle:99.44°, WVP:3.68×10-7 gh-1m-1Pa-1), and oxygen (0.614×10-6gh-1 m-1 atm-1) barrier properties. Adding (Q)CS NPs enhanced the antimicrobial properties of CPE(Q)CS against foodborne microbes (E. coli:15.45 mm, P. aeruginosa:14.50 mm, B. subtilis:14.25 mm, S. aureus:13.52 mm, and C. albicans:15.16 mm). In addition, incorporating (Q)CS NPs, increased the shelf life of bread compared to unpacked and polyethylene-packed bread samples.
期刊介绍：
The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.
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