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A global challenge in corn production lies in harvesting and post-harvest management, particularly fungal infestation, which significantly impacts both human health and the economy. Protecting corn from fungal infestation is imperative, prompting the exploration of novel antifungal materials that are safe, economical, and efficient. Therefore, this study aims to propose such materials, focusing on the evaluation of MgAl-Layered Double Hydroxide synthesized via conventional coprecipitation and its efficient use as fungicide. Additionally, a new nanocomposite MgAlAgNPs-LDH integrating silver nanoparticles (AgNPs) derived from a green synthesis with Curcuma longa L. was constructed using microwave irradiation coprecipitation. The antifungal activity of MgAlAgNPs-LDH was assessed, showcasing enhanced efficacy attributable to the synergetic effect of AgNPs and MgAl-LDH. The materials were employed as fungicides in a comparative study with a commercial fungicide (Tecto 60) over a 28-day period in a completely randomized design, utilizing grains from two corn genotypes (Variety Cafime and hybrid H-70). Characterization of hydrotalcites was conducted using X-ray Diffraction, Fourier transform infrared spectroscopy, energy dispersive X-ray spectroscopy, X-ray Photoelectron Spectroscopy and Scanning Electron Microscopy. Notably, MgAlAgNPs exhibited excellent antifungal activity against Fusarium spp, suggesting their potential utility as innovative, environmentally friendly fungicidal materials. The analysis of variance showed significant differences (P ≤ 0.05) between genotypes, hydrotalcites and interaction for the variable Infected Area Day 14 (AREAI14) with the fungus Fusarium spp. MgAlAgNPs-LDH demonstrated effectiveness in reducing Fusarium spp. infestation, thus presenting a viable solution for post-harvest management in corn production.

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MgAl-LDH and MgAlAgNPs-LDH as Potential Agro-Nanofungicides Against Fusarium spp. for Corn Grains

  • 章节

  • 发表日期：

    2026年

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  • M. C. Nava-Zacarias,
  • R. Zepeda-Bautista,
  • L. V. Castro,
  • M. E. Manriquez,
  • C. M. Reza-San German,
  • J. Miranda-Sánchez

摘要

A global challenge in corn production lies in harvesting and post-harvest management, particularly fungal infestation, which significantly impacts both human health and the economy. Protecting corn from fungal infestation is imperative, prompting the exploration of novel antifungal materials that are safe, economical, and efficient. Therefore, this study aims to propose such materials, focusing on the evaluation of MgAl-Layered Double Hydroxide synthesized via conventional coprecipitation and its efficient use as fungicide. Additionally, a new nanocomposite MgAlAgNPs-LDH integrating silver nanoparticles (AgNPs) derived from a green synthesis with Curcuma longa L. was constructed using microwave irradiation coprecipitation. The antifungal activity of MgAlAgNPs-LDH was assessed, showcasing enhanced efficacy attributable to the synergetic effect of AgNPs and MgAl-LDH. The materials were employed as fungicides in a comparative study with a commercial fungicide (Tecto 60) over a 28-day period in a completely randomized design, utilizing grains from two corn genotypes (Variety Cafime and hybrid H-70). Characterization of hydrotalcites was conducted using X-ray Diffraction, Fourier transform infrared spectroscopy, energy dispersive X-ray spectroscopy, X-ray Photoelectron Spectroscopy and Scanning Electron Microscopy. Notably, MgAlAgNPs exhibited excellent antifungal activity against Fusarium spp, suggesting their potential utility as innovative, environmentally friendly fungicidal materials. The analysis of variance showed significant differences (P ≤ 0.05) between genotypes, hydrotalcites and interaction for the variable Infected Area Day 14 (AREAI14) with the fungus Fusarium spp. MgAlAgNPs-LDH demonstrated effectiveness in reducing Fusarium spp. infestation, thus presenting a viable solution for post-harvest management in corn production.