ArticleScientific reports2026
Eco-friendly synthesis of gold nanoparticles using Gracilaria gracilis with antioxidant potential and biocompatibility.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed.
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Authors and funding
4 authors.
Funding
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Abstract
Gold nanoparticles have emerged as promising materials for drug delivery systems due to their unique biological and physicochemical properties. This study presents the synthesis and biological application of gold nanoparticles using red algae (Gracilaria gracilis) for the first time, offering a cost-effective and eco-friendly method. The biosynthesized nanoparticles (NPs) were characterized using various analytical techniques, including Transmission electron microscopy (TEM), Field emission scanning electron microscopy (FESEM), Energy dispersive X-ray analysis (EDX), UV-Vis-spectroscopy, Powder X-ray diffraction (PXRD), Fourier-transform infrared spectroscopy (FTIR), and Zeta-potential analysis. The UV-Vis spectrum confirmed the successful green synthesis of gold NPs. FESEM and TEM images revealed the spherical morphology of these NPs with an average size of 10.49 nm, and they were uniformly dispersed. The high gold content was further confirmed by EDX analysis. The crystalline size of the nanoparticles, as calculated from XRD data, was about 39.5 nm. The presence of bioactive compounds on the nanoparticles’ surface was verified by FTIR analysis, which also correlated with a decrease in Zeta-potential values. The antioxidant activity was evaluated using the DPPH assay, which revealed dose-dependent radical scavenging effects. Cytotoxicity analysis demonstrated that the biosynthesized gold nanoparticles exhibited no significant toxicity toward human fibroblast cells. Furthermore, these nanoparticles showed excellent biocompatibility, indicating their potential applicability as effective alternatives in biomedical, pharmaceutical, and food industries.
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