Synthesis, process optimization and characterization of gold nanoparticles using crude fucoidan from the invasive brown seaweed Sargassum muticum
| Autor: | Herminia Domínguez, Noelia Flórez-Fernández, Noelia González-Ballesteros, María Dolores Torres, María C. Rodríguez-Argüelles |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
0303 health sciences
Calcium alginate ABTS biology Fucoidan 02 engineering and technology 021001 nanoscience & nanotechnology biology.organism_classification Fucose Hot water extraction 03 medical and health sciences chemistry.chemical_compound chemistry Colloidal gold Trolox Sargassum muticum 0210 nano-technology Agronomy and Crop Science 030304 developmental biology Nuclear chemistry |
| Zdroj: | Algal Research. 58:102377 |
| ISSN: | 2211-9264 |
| DOI: | 10.1016/j.algal.2021.102377 |
| Popis: | Crude fucoidans from Sargassum muticum obtained by hot water extraction at 40–80 °C were used for the synthesis of gold nanoparticles (AuNPs). The effect of operation temperature on the yield and properties of the extract was determined. The alginate fraction partially coextracted precipitated as calcium alginate and showed rheological properties slightly lower than those of commercial alginates reported elsewhere. The fraction of fucoidan with a larger amount of sulfate, obtained at 60 °C (45% saccharide, 22% fucose, 24% sulfate), also contained 8.5% phlorotannins and 3% protein, as well as showing 37% the 2,2-azinobis(3-ethyl-benzothiazoline-6-sulfonate) (ABTS) radical scavenging capacity of Trolox. This soluble product was used for optimization during the synthesis of AuNPs. Several reaction conditions were tested until the obtainment of homogeneous nanoparticles. The characterization of the synthesized nanoparticles was performed employing ultraviolet-visible spectroscopy, Z potential, transmission electron microscopy and Fourier transformed infrared spectroscopy. |
| Databáze: | OpenAIRE |
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