Blue green alga mediated synthesis of gold nanoparticles and its antibacterial efficacy against Gram positive organisms
Abstract
Biofunctionalized gold nanoparticles (AuNPs) play an important role in design and development of nanomedicine. Synthesis of AuNPs from biogenic materials is environmentally benign and possesses high bacterial inhibition and bactericidal properties. In the present study, blue green alga Spirulina platensis protein mediated synthesis of AuNPs and its antibacterial activity against Gram positive bacteria is discussed. AuNPs were characterized using Ultraviolet-visible (UV-vis) spectroscopy, Fluorescence spectroscopy, Fourier Transform-Infrared (FTIR) spectroscopy, Raman spectroscopy, High Resolution-Transmission Electron Microscopy (HR-TEM) and Energy Dispersive X-ray analysis (EDAX). Stable, well defined AuNPs of smaller and uniform shape with an average size of ~ 5 nm were obtained. The antibacterial efficacy of protein functionalized AuNPs were tested against Gram positive organisms Bacillus subtilis and Staphylococcus aureus.
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Spirulina produces extracellular metabolites with antibacterial activity.
“Spirulina produces extracellular metabolites with antibacterial activity (Figure 1) [19–21, 77].”
From Antioxidant, Immunomodulating, and Microbial‐Modulating Activities of the Sustainable and Ecofriendly <i>Spirulina</i> (2017) · cites this paper as [77]
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References 42 · Cited by 260
- Authors
- Uma Suganya, K. S., Govindaraju, K., Ganesh Kumar, V., Stalin Dhas, T., Karthick, V., Singaravelu, G., & Elanchezhiyan, M.
- Affiliations
- Sathyabama Institute of Science and Technology (IN)
- Thiruvalluvar University (IN)
- University of Madras (IN)
- Corresponding author
- Govindaraju, K.
- Venue
- Materials Science and Engineering: C
- Publisher
- Elsevier BV
- Published
- 2015-02
- Volume
- 47
- Pages
- 351-356
- ISSN
- 0928-4931 (ISSN-L)
- OpenAlex
- W2039491395
- Cited by
- 260
- References
- 42
- Citations by year
- 2026: 8 · 2025: 20 · 2024: 34 · 2023: 22 · 2022: 40 · 2021: 41 · 2020: 31 · 2019: 21 · 2018: 11 · 2017: 17 · 2016: 11 · 2015: 4
- FWCI
- 4.84
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Materials Science and Engineering C (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Department of Science and Technology (DST-SERB), Government of India
- Topics
- Physical Sciences › Materials Science › Materials Chemistry › Nanoparticles: synthesis and applications
- Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Gold and Silver Nanoparticles Synthesis and Applications
- Physical Sciences › Engineering › Biomedical Engineering › Laser-Ablation Synthesis of Nanoparticles
- Keywords
- gold nanoparticles, green synthesis, Spirulina platensis, cyanobacteria, antibacterial activity, Gram-positive bacteria, Bacillus subtilis, Staphylococcus aureus, nanoparticle stability, size-controlled synthesis
- MeSH terms
- Cyanobacteria, Anti-Bacterial Agents, Gold, Gram-Positive Bacteria, Spectrophotometry, Ultraviolet, Spectrum Analysis, Raman, Spectroscopy, Fourier Transform Infrared, Microscopy, Electron, Transmission, Metal Nanoparticles
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