Synthesis and characterization of ZnO and Zn0.9TM0.1O (TM = Cu and Co) nanoparticles to enhance the shelf life of jujubes and green chilies

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Applied Physics A Pub Date : 2025-01-30 DOI:10.1007/s00339-025-08286-4

Shafaq Arif, Rida Nadeem, Kiran Shahzadi, Sofia Siddique, M. S. Anwar

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引用次数: 0

Abstract

Doped and undoped Zinc oxide (ZnO) nanoparticles (NPs) were synthesized via co-precipitation protocol. Transition metals Co and Cu are used as dopants with 10% doping. The NPs are characterized systematically using XRD, SEM, EDX, and UV-Vis spectroscopy. The NPs exhibit wurtzite hexagonal structure and agglomerated morphology. The bandgap energy of 3.13 eV of undoped NPs increases to 4.10 eV (31%) and 4.24 eV (35%) for Cu and Co dopant, respectively. The antimicrobial activity of nanoparticles is investigated using the well-diffusion method. Antimicrobial studies revealed enhanced activity of Zn_0.9Cu_0.1O NPs against Pseudomonas aeruginosa and Klebsiella pneumonia. Comparatively, Zn_0.9Co_0.1O NPs showed superior efficiency against Staphylococcus aureus, Escherichia coli, Aspergillus Niger, and Sclerotium microbial stains. Shelf life of NPs coated jujubes and chilies is investigated with coating of chitosan-Gelatin CH/GL-ZnO and CH/GL-doped-ZnO, and stored for 45 days at ambient conditions. During the storage period, the physiological weight loss, moisture content and decay index of coated and uncoated jujubes and chilies are assessed every five-days. It is observed that the coating delayed ripening and oxidative deterioration compared to the uncoated jujubes and chilies. In addition, the doped ZnO coatings significantly reduced the loss of the weight and moisture content, while maintaining their physical appearance.

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来源期刊

Applied Physics A 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.40%

发文量

964

审稿时长

38 days

期刊介绍： Applied Physics A publishes experimental and theoretical investigations in applied physics as regular articles, rapid communications, and invited papers. The distinguished 30-member Board of Editors reflects the interdisciplinary approach of the journal and ensures the highest quality of peer review.