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Characterization and Application of CuO Nanoparticles in Gelatin-Glycerol Coatings for Enhanced Shelf Life of Strawberries

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Abstract

This study investigates the synthesis, characterization, and application of copper oxide nanoparticles (CuO NPs) for enhancing the shelf life of strawberries and exploring adjacent plasmonic phenomena. Utilizing both sol–gel and precipitation methods, the CuO NPs were synthesized, characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and exhibited high purity as confirmed by energy-dispersive spectroscopy (EDS). SEM analysis showed that nanoparticles created using the precipitation method were uniformly spherical and sized between 30 and 70 nm. BET analysis revealed a surface area of 58.76 m2/g, enhancing their antimicrobial effectiveness. The application phase involved coating strawberries with CuO NP–infused gelatin and glycerol solutions to assess their impact on fruit preservation. Increased concentrations of CuO NPs correlated with significant enhancements in preservation effectiveness, extending shelf life up to 27 days without spoilage. Additionally, the interaction of CuO NPs with light, despite lacking surface plasmon resonance, provides insightful implications for designing nanocomposites with improved functionalities for food packaging. This study underscores the potential of CuO NPs as promising nanomaterials for food preservation, offering a novel approach to reduce food waste and enhance food safety through innovative nanopackaging solutions.

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Acknowledgements

We would like to express our sincere gratitude to the Scientific Research Center of Soran University for their support and assistance throughout the course of this research project. Their commitment to promoting scientific research and fostering an environment of academic excellence has been instrumental in the successful completion of this study. We extend our appreciation to the staff and faculty members of the Scientific Research Center for their valuable guidance, technical expertise, and access to research facilities.

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Authors and Affiliations

  1. Scientific Research Center, Soran University, Soran, Kurdistan Region, Iraq

    Hossein Khojasteh, Peyman Aspoukeh & Mohammad-Peyman Mazhari

  2. Department of Medical Biochemical Analysis, Cihan University-Erbil, Erbil, Kurdistan Region, Iraq

    Kamran Heydaryan

  3. Department of Chemistry, Faculty of Sciences, Soran University, Soran, Kurdistan Region, Iraq

    Hezha Nuri Ibrahim, Mihraban Mawlan Mohammed & Sarezh Mzafar Sleman

Authors
  1. Hossein Khojasteh
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Contributions

Hossein Khojasteh contributed to the conceptualization of the study, formulation of the research design, and oversight of the entire research project. Mihraban Mawlan Mohammed, Hezha Nuri Ibrahim, and Sarezh Mzafar Sleman played a key role in the synthesis and characterization of CuO NPs, including the application of various methods such as sol–gel and precipitation.

Peyman Aspoukeh and Kamran Heydaryan contributed significantly to the experimental work, data collection, and analysis, particularly in the examination of the impact of CuO NPs on strawberry preservation. Mohammad-Peyman Mazhari was involved in the application phase of the study, specifically in the coating of strawberries with CuO NP–infused solutions and the evaluation of shelf life.

All authors actively participated in the drafting and critical review of the manuscript. Hossein Khojasteh and Peyman Aspoukeh were particularly involved in the writing of the original draft, while Mohammad-Peyman Mazhari contributed to the manuscript’s review and editing process. The final version of the manuscript was approved by all authors.

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Correspondence to Hossein Khojasteh.

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Khojasteh, H., Heydaryan, K., Aspoukeh, P. et al. Characterization and Application of CuO Nanoparticles in Gelatin-Glycerol Coatings for Enhanced Shelf Life of Strawberries. Plasmonics (2024). https://doi.org/10.1007/s11468-024-02345-x

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