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2000
Volume 13, Issue 3
  • ISSN: 2211-7385
  • E-ISSN: 2211-7393

Abstract

Introduction

Metal nanoparticles have received much attention due to their unique physical dynamics, chemical reactivity, and promising biological applications. Green synthesis using natural compounds is an alternative to traditional chemical methods for the synthesis of nanoparticles.

Materials and Methods

Herein, two secondary metabolites were isolated from different fractions of methanolic extract of (bitter apple) Schard. and identified as cucurbitacin E-glycoside () and methyl gallate (). Both compounds were used in the green nanoformulation of gold nanoparticles. Mass spectrometry and NMR spectroscopy were used for structure elucidation of compound and compound . UV-vis spectroscopy, FTIR, and AFM were performed to confirm the formation of AuNPs.

Results and Discussions

The spectra of UV-Vis showed a characteristic peak at 519 nm and 548 nm for goldnanoparticles stabilized by compounds 1 and 2, respectively. AuNPs ranged mostly between 1 and 50 nm measured using AuNPs capped by AFM. The FTIR analysis confirmed the presence of phytochemicals on the surface of AuNPs. The synthesized AuNPs showed good antibacterial activity against , , and .

Conclusion

The synthesized AuNPs demonstrated good antibiofilm activity against . Thus, the green synthesized AuNPs can combat the pathogenicity of several human pathogens.

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2025-09-27

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Synthesis of Gold Nanoparticles Using Cucurbitacin E-Glycoside and Methyl Gallate Isolated from Citrullus colocynthis L. Fruit and Evaluation of their Antibacterial and Antibiofilm Activities
Pharm. Nanotechnol. 13, 543 (2025); https://doi.org/10.2174/0122117385314421241009075737
/content/journals/pnt/10.2174/0122117385314421241009075737
/content/journals/pnt/10.2174/0122117385314421241009075737
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  • Article Type:     Research Article
Keyword(s): antibacterial; antibiofilm; Citrullus colocynthis; cucurbitacin; Gold nanoparticles; methyl gallate

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