Issue: Số 15 - Tháng 6 - 2024Hóa học - Công nghệ thực phẩm
Antiifungal activity of copper nanopaticles against plant pathogen fusarium oxysporum
Published: July 28, 2026
Abstract
In this study, copper nanoparticles (CuNP) were synthesized by chemical reduction of Cu2+ with reducing agent NaBH4 in a chitosan stabilizer. Characterization of CuNPs was performed using UV-Vis spectra, X-ray Diffraction (XRD) patterns and Transmission Electron Microscopy (TEM) images. The ability of CuNP to inhibit the growth of Fusarium oxysporum was investigated at concentrations between 20 and 100 ppm. The results showed that CuNP samples signifcantly inhibited the growth of Fusarium oxysporum, with smaller particle diameter exhibiting a higher antifungal effect. The 26.5 nm CuNPs displayed greater antifungal efciency than the 29 nm CuNPs. Complete inhibition was observed at a concentration of ≥ 80 ppm after 7 days of culture for the 2.0 CuNP (26.5 nm) sample, while the fungus remained viable on PDA plates containing 1.5 CuNPs (29 nm).
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