Green Synthesis of Zinc Oxide Nanoparticles Using Aloe vera Leaf Extract and Evaluation of the Antimicrobial and Antioxidant Properties of the ZnO/Regenerated Cellulose Film

Green Synthesis of Zinc Oxide Nanoparticles Using Aloe vera Leaf Extract and Evaluation of the Antimicrobial and Antioxidant Properties of the ZnO/Regenerated Cellulose Film

22 April 2024 | Cuiling Wu · Ting Zhang · Binghan Ji · Yajie Chou · Xueyan Du
This study explores the green synthesis of zinc oxide (ZnO) nanoparticles (NPs) using Aloe vera leaf extract (ALE) as both the reducing and capping agents. The ZnO NPs were characterized using UV, FTIR, HR-TEM, and XRD, revealing a pure crystalline state with an average crystallite size of approximately 25 nm. A regenerated cellulose film (RCF) incorporating these ZnO NPs was prepared through the immersion phase-conversion method. The structure and morphology of the ZnO/RCF were characterized using SEM and EDS mapping, showing well-dispersed and stabilized ZnO NPs in the cellulose matrix. The antimicrobial properties of the ZnO/RCF were evaluated against *Kosakonia Cowanii* and *Alternaria alternata* strains, with the highest inhibition zone observed for ZnO-10/RCF (22 ± 0.4 mm). Additionally, the ZnO/RCF exhibited antioxidant activity as a DPPH free radical scavenger. The study suggests that ZnO/RCF has potential applications in food packaging, pharmaceuticals, agriculture, and cosmetics.This study explores the green synthesis of zinc oxide (ZnO) nanoparticles (NPs) using Aloe vera leaf extract (ALE) as both the reducing and capping agents. The ZnO NPs were characterized using UV, FTIR, HR-TEM, and XRD, revealing a pure crystalline state with an average crystallite size of approximately 25 nm. A regenerated cellulose film (RCF) incorporating these ZnO NPs was prepared through the immersion phase-conversion method. The structure and morphology of the ZnO/RCF were characterized using SEM and EDS mapping, showing well-dispersed and stabilized ZnO NPs in the cellulose matrix. The antimicrobial properties of the ZnO/RCF were evaluated against *Kosakonia Cowanii* and *Alternaria alternata* strains, with the highest inhibition zone observed for ZnO-10/RCF (22 ± 0.4 mm). Additionally, the ZnO/RCF exhibited antioxidant activity as a DPPH free radical scavenger. The study suggests that ZnO/RCF has potential applications in food packaging, pharmaceuticals, agriculture, and cosmetics.
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[slides and audio] Green Synthesis of Zinc Oxide Nanoparticles Using Aloe vera Leaf Extract and Evaluation of the Antimicrobial and Antioxidant Properties of the ZnO%2FRegenerated Cellulose Film