Preparation of Quercetin/Copper Nanoparticles and Their Preservation Performance on <i>Shine Muscat</i> Grapes
Deterioration in fruits represent a significant challenge to food safety, which has prompted our investigation into sustainable fruit preservation technologies. This paper presents the synthesis of quercetin/copper nanoparticles (QC NPs) and their application in the preservation of <i>Shine Mu...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-03-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/30/7/1438 |
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| Summary: | Deterioration in fruits represent a significant challenge to food safety, which has prompted our investigation into sustainable fruit preservation technologies. This paper presents the synthesis of quercetin/copper nanoparticles (QC NPs) and their application in the preservation of <i>Shine Muscat</i> grapes. The QC NPs, prepared through quercetin/copper complexation, exhibited stability with a particle size of 79.4 ± 3.2 nm and a zeta potential of −34.00 ± 4.98 mV. The nanoparticles exhibited robust antioxidant activity and 100% bactericidal effect against <i>E. coli</i> and <i>S. aureus</i> at 0.05 mg/mL, thereby underscoring their potential for use in fruit preservation. The application of a sodium alginate (SA) + QC NP coating to <i>Shine Muscat</i> grapes resulted in an 8.08% reduction in weight loss in comparison to the control, which exhibited a 10.40% reduction. The coating maintained firmness and preserved titratable acid content, thereby extending the storage life of the grapes. These findings position QC NPs as a promising material in eco-friendly and effective fruit preservation, and offer a viable solution to postharvest fruit preservation. |
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| ISSN: | 1420-3049 |