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<p>Many fungal endophytes were identified and evaluated for this capacity to find a potentially simple and ecologically acceptable method of producing a variety of nanoparticles (NPs) at a low cost and without the use of hazardous or harmful substances. In this study Zinc Oxide (ZnO) NPs have been synthesized using the filtrate of fungal endophytes isolated from <i>Buchanania lanzan</i> plant. The zinc acetate and the sodium hydroxide were used as the precursors and the fungal filtrate was used as a solvent (reducing agent) to synthesize the ZnO NPs by utilizing the sol–gel method. The biologically synthesized nanoparticles were initially monitored by ultraviolet–visible (UV–Vis) spectroscopy which shows a single plasmon resonance peak of ZnO identified within the 350–400&#xa0;nm range. Further, as-synthesized ZnO NPs were characterized by the x-ray diffraction (XRD), scanning electron microscopy (SEM), and the transmission electron microscopy (TEM) in imaging and diffraction mode. The morphological feature of the ZnO NPs has been analyzed and it was observed that the majority of them are spherical nanoparticles with an average particle size of 17&#xa0;nm, however, few ZnO nano rods were also observed. The selected area electron diffraction (SAED) analysis confirmed the pure synthesized ZnO NPs having hexagonal wurtzite phase with lattice parameters a = b = 3.24&#xa0;Å and c = 5.20&#xa0;Å. According to the results of the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay and total antioxidant capacity it was found that the synthesized ZnO NPs are very stable and had greater antioxidant activity than the endophytic fungal filtrate. ZnO NPs also exhibited excellent antimicrobial activity with an average inhibition zone of 18&#xa0;mm ( <i>Escherichia coli</i>), 12&#xa0;mm ( <i>Pseudomonas aeuroginosa</i>), 10&#xa0;mm ( <i>Klebsiella</i> sp.), and 6&#xa0;mm ( <i>Staphylococcus aureus</i>).</p>

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Mycosynthesis of Zinc oxide nanoparticles using endophytic fungi isolated from Buchanania sp. and its assessment as nanobiopotential

  • 期刊论文

  • 发表日期：

    2026年6月15日

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  • Sneha Dwivedi,
  • Ankita Rai,
  • Ajit Kumar Maddheshiya,
  • Anurag Mishra,
  • Thakur Prasad Yadav,
  • Alok Kumar Singh

摘要

Many fungal endophytes were identified and evaluated for this capacity to find a potentially simple and ecologically acceptable method of producing a variety of nanoparticles (NPs) at a low cost and without the use of hazardous or harmful substances. In this study Zinc Oxide (ZnO) NPs have been synthesized using the filtrate of fungal endophytes isolated from Buchanania lanzan plant. The zinc acetate and the sodium hydroxide were used as the precursors and the fungal filtrate was used as a solvent (reducing agent) to synthesize the ZnO NPs by utilizing the sol–gel method. The biologically synthesized nanoparticles were initially monitored by ultraviolet–visible (UV–Vis) spectroscopy which shows a single plasmon resonance peak of ZnO identified within the 350–400 nm range. Further, as-synthesized ZnO NPs were characterized by the x-ray diffraction (XRD), scanning electron microscopy (SEM), and the transmission electron microscopy (TEM) in imaging and diffraction mode. The morphological feature of the ZnO NPs has been analyzed and it was observed that the majority of them are spherical nanoparticles with an average particle size of 17 nm, however, few ZnO nano rods were also observed. The selected area electron diffraction (SAED) analysis confirmed the pure synthesized ZnO NPs having hexagonal wurtzite phase with lattice parameters a = b = 3.24 Å and c = 5.20 Å. According to the results of the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay and total antioxidant capacity it was found that the synthesized ZnO NPs are very stable and had greater antioxidant activity than the endophytic fungal filtrate. ZnO NPs also exhibited excellent antimicrobial activity with an average inhibition zone of 18 mm ( Escherichia coli), 12 mm ( Pseudomonas aeuroginosa), 10 mm ( Klebsiella sp.), and 6 mm ( Staphylococcus aureus).