S. hispanica mucilage/ ZnO based films: Preparation, characterization, and potential application
The use of plastic for food packaging is a major contributor to environmental pollution. To address this issue, biopolymeric films have emerged as a potential alternative to plastic products commonly used in food packaging. These biopolymeric films can be enhanced with antimicrobial agents to make t...
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| Published in: | Food hydrocolloids Vol. 159; p. 110637 |
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| Main Authors: | , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier Ltd
01-02-2025
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The use of plastic for food packaging is a major contributor to environmental pollution. To address this issue, biopolymeric films have emerged as a potential alternative to plastic products commonly used in food packaging. These biopolymeric films can be enhanced with antimicrobial agents to make them more effective. This study aimed to develop and evaluate the properties of films made from Salvia hispanica mucilage and ZnO particles. The mucilage was obtained by filtering and drying seeds, while ZnO was synthesized using the forced hydrolysis of ZnC₄H₆O₄ and NaOH. The films were produced by combining the mucilage with varying concentrations of ZnO (0.1, 0.5, and 1.0%) using a casting method. Tests were conducted to evaluate the films' physical, chemical, and biological properties. X-ray diffraction analysis showed that ZnO was present, while scanning electron microscopy revealed the presence of C, O, and Zn elements. Fourier transform infrared spectroscopy confirmed the presence of S. hispanica mucilage. Thermogravimetric analysis showed that the films were thermally stable at temperatures below 225 °C. Dynamic mechanical analysis revealed that the 0.1% film had the best resistance compared to the 0.5% and 1.0% films. Finally, the study found that the antimicrobial activity of the films depended on the concentration, size, and morphology of the ZnO particles. In conclusion, further research is needed to create films that can effectively inhibit pathogenic bacteria growth in food and be a viable alternative to plastic for food packaging.
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•Films of S. hispanica and ZnO were made by solvent-casting method.•Scanning electron microscopy showed the morphology of the material.•XRD confirmed the ZnO structure and FT-IR showed the interaction between the ZnO particles and S. hispanica mucilage.•Biological tests in films showed that interaction between S. hispanicaand ZnO doesn't allow the antimicrobial activity. |
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| ISSN: | 0268-005X |
| DOI: | 10.1016/j.foodhyd.2024.110637 |