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<p>A sustainable approach to producing silver nanoparticles (AgNPs) is the environmentally friendly synthesis of AgNPs utilizing extracts from the seagrass, <i>Halophila decipiens</i>. Silver nanoparticles (AgNPs) were effectively synthesized by green synthesis method utilizing the extract of Halophila decipiens, indicated by a color change from pale yellow to dark brown, and confirmed by a UV-vis absorption peak at 420&#xa0;nm suggesting a substantial production of Ag NPs. The FTIR analysis showed characteristic peaks which includes a strong broad peak at 3380.33&#xa0;cm⁻¹ for O-H stretching alcohol and a peak at 1623.34&#xa0;cm⁻¹ for C = C that indicate conjugated alkene. Additionally, distinct peaks at 1048.43&#xa0;cm⁻¹ and 1171.97&#xa0;cm⁻¹ indicated the presence of fluoro-substituted compounds in <i>Halophila decipien</i>s-mediated silver nanoparticles. SEM revealed 0.5&#xa0;nm spherical silver nanoparticles, with EDS confirming 48.34% silver NPs. The antioxidant activity of silver NPs synthesized from <i>Halophila decipiens</i> showed significant DPPH scavenging activity, ranging from 71.2 ± 2.2% at 25&#xa0;µg/ml to 37.5 ± 1.5% at 100&#xa0;µg/ml. Nitric oxide scavenging activity increased with concentration, reaching 74.5 ± 1.8% at 100&#xa0;µg/ml. In the hydrogen peroxide assay, the scavenging percentage increased with concentration, with a minimum of 40.5 ± 2.6% at 25&#xa0;µg/ml. This study highlights the potential of silver NPs synthesized from <i>Halophila decipiens</i> in green synthesis and its promising antioxidant properties. The environmentally friendly synthesis of AgNPs not only offers a sustainable approach but also opens avenues for biomedical applications.</p>

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Exploring the Biological Properties and Characterization of Silver Nanoparticles Synthesized from Halophila decipiens Seagrass

  • 期刊论文

  • 发表日期：

    2025年3月13日

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  • Pauline Christupaul Roseline,
  • Hareesh Abesheak,
  • Pavithra Thiraviyam,
  • Kamala Kannan,
  • Pitchiah Sivaperumal

摘要

A sustainable approach to producing silver nanoparticles (AgNPs) is the environmentally friendly synthesis of AgNPs utilizing extracts from the seagrass, Halophila decipiens. Silver nanoparticles (AgNPs) were effectively synthesized by green synthesis method utilizing the extract of Halophila decipiens, indicated by a color change from pale yellow to dark brown, and confirmed by a UV-vis absorption peak at 420 nm suggesting a substantial production of Ag NPs. The FTIR analysis showed characteristic peaks which includes a strong broad peak at 3380.33 cm⁻¹ for O-H stretching alcohol and a peak at 1623.34 cm⁻¹ for C = C that indicate conjugated alkene. Additionally, distinct peaks at 1048.43 cm⁻¹ and 1171.97 cm⁻¹ indicated the presence of fluoro-substituted compounds in Halophila decipiens-mediated silver nanoparticles. SEM revealed 0.5 nm spherical silver nanoparticles, with EDS confirming 48.34% silver NPs. The antioxidant activity of silver NPs synthesized from Halophila decipiens showed significant DPPH scavenging activity, ranging from 71.2 ± 2.2% at 25 µg/ml to 37.5 ± 1.5% at 100 µg/ml. Nitric oxide scavenging activity increased with concentration, reaching 74.5 ± 1.8% at 100 µg/ml. In the hydrogen peroxide assay, the scavenging percentage increased with concentration, with a minimum of 40.5 ± 2.6% at 25 µg/ml. This study highlights the potential of silver NPs synthesized from Halophila decipiens in green synthesis and its promising antioxidant properties. The environmentally friendly synthesis of AgNPs not only offers a sustainable approach but also opens avenues for biomedical applications.