Green synthesis of silver nanoparticles using polysaccharides extracted from marine macro algae

HM El-Rafie; MH El-Rafie; MK Zahran

doi:10.1055/s-0032-1320688

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Planta Med 2012; 78 - PI1
DOI: 10.1055/s-0032-1320688

Green synthesis of silver nanoparticles using polysaccharides extracted from marine macro algae

HM El-Rafie ¹, MH El-Rafie ², MK Zahran ³

¹Pharmacognosy Division, National Research Center, Dokki, Cairo, Egypt, 12311
²Textile Research Division, National Research Center, Dokki, Cairo, Egypt, 12311
³Department of Chemistry, Faculty of Science, Helwan University, Ain-Helwan, Cairo, Egypt, 11795

Congress Abstract

Green synthesis of nanoparticles that have environmentally acceptable solvent systems and eco-friendly reducing agents is of great importance. The aim of the work was to synthesis of silver nanoparticles (AgNPs) using polysaccharides extracted from four marine macro-algae, namely, Pterocladia capillacae (Pc) Jania rubins (Jr) Ulva faciata (Uf) and Colpmenia sinusa (Cs) as reducing agents for silver ions as well as stabilizing agents for the synthesized AgNPs. Hot water extracts of the algae Pc, Jr, Uf, and Cs were studied for their polysaccharides (ps) contents and were found to be 6.46, 5.63, 8.84 and 4.33% respectively. The GLC analysis of these extracted ps revealed that rhamnose (46.88% in Pc), galactose (30.2% in Uv; 22.23% in Jr), and fucose (10% in Cs) constitute the major sugars comprising a part of structural polysaccharide.

The formed AgNPs have been confirmed by UV-Vis spectroscopy, FTIR analysis and TEM. The resultant AgNPs colloidal solutions were applied to cotton fabrics with/without binder. The antimicrobial activity of the treated fabrics loaded with AgNPs was evaluated.