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<p>This study presents the first report on the biogenic synthesis of gold nanoparticles with the help of <i>Cucurma caesia</i> aqueous extract (CcAuNPs). The CcAuNPs physiochemical characteristics were analysed using various methods. In addition, the study also examines the eco-friendly synthesis of CcAuNPs by assessing their potential toxicity and efficacy. The characterization findings confirmed the successful synthesis of more stable, crystalline and spherical CcAuNPs with an average size of 36.48&#xa0;nm. The phytotoxicity of CcAuNPs was performed by exposing the seeds of <i>Vigna radiata</i> (Mung bean) to different CcAuNPs concentrations. Results suggested that the growth parameters, namely fresh mass, root and shoot length increased at lower concentrations (upto 3.12&#xa0;µg/ml), while higher concentrations exhibited inhibitory effects. Embryotoxicity analysis was also performed using the live model embryos of <i>Danio rerio</i> (Zebra fish) to assess the developmental toxicity of CcAuNPs. On treatment with different concentrations of CcAuNPs, the hatching rate, heartbeat rate, survival rate, and morphological abnormalities of the embryos were observed. The findings implied that an increasing concentration of CcAuNPs exhibited delayed hatching, increased heartbeat, increased mortality, and random abnormalities, indicating the concentration-dependent toxicity. Overall, this study adds insight on the probable environmental impacts of CcAuNPs and emphasizes the significance of evaluating the toxicity before applying in various agricultural, biomedical and environmental applications.</p>

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Synthesis, characterization and toxicity analysis of Curcuma caesia mediated green gold nanoparticles

  • 期刊论文

  • 发表日期：

    2026年2月20日

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  • M. Nizar Fathima,
  • S. Ranjani,
  • S. Hemalatha

摘要

This study presents the first report on the biogenic synthesis of gold nanoparticles with the help of Cucurma caesia aqueous extract (CcAuNPs). The CcAuNPs physiochemical characteristics were analysed using various methods. In addition, the study also examines the eco-friendly synthesis of CcAuNPs by assessing their potential toxicity and efficacy. The characterization findings confirmed the successful synthesis of more stable, crystalline and spherical CcAuNPs with an average size of 36.48 nm. The phytotoxicity of CcAuNPs was performed by exposing the seeds of Vigna radiata (Mung bean) to different CcAuNPs concentrations. Results suggested that the growth parameters, namely fresh mass, root and shoot length increased at lower concentrations (upto 3.12 µg/ml), while higher concentrations exhibited inhibitory effects. Embryotoxicity analysis was also performed using the live model embryos of Danio rerio (Zebra fish) to assess the developmental toxicity of CcAuNPs. On treatment with different concentrations of CcAuNPs, the hatching rate, heartbeat rate, survival rate, and morphological abnormalities of the embryos were observed. The findings implied that an increasing concentration of CcAuNPs exhibited delayed hatching, increased heartbeat, increased mortality, and random abnormalities, indicating the concentration-dependent toxicity. Overall, this study adds insight on the probable environmental impacts of CcAuNPs and emphasizes the significance of evaluating the toxicity before applying in various agricultural, biomedical and environmental applications.