Biosynthesis of Gold Nanoparticles using Scytosiphon lomentaria (Brown algae) and Spyridia filamentosa (Red algae) from Kyrenia Region and Evaluation of their Antimicrobial and Antioxidant Activity

Authors : Doga KAVAZ, Huzaifa UMAR, Tariro ZİMUTO
Pages : 367-382
Doi:10.15671/hjbc.518593
View : 44 | Download : 8
Publication Date : 2019-12-01
Article Type : Research Paper
Abstract :This study was carried out for biosynthesis of gold nanoparticles using Scytosiphon lomentaria insert ignore into journalissuearticles values(brown algae); and Spyridia filamentosa insert ignore into journalissuearticles values(red algae); and compared. Synthesized gold nanoparticles were characterized using the UV-Vis spectroscopy insert ignore into journalissuearticles values(UV-Vis);, Fourier transform infrared insert ignore into journalissuearticles values(FTIR); and Master Sizer analysis. Antioxidant and antimicrobial activity of the synthesized nanoparticles were tested against E. coli and S. typhi . Macro algae involvement in the stabilization of the gold nanoparticles was confirmed by the presence of UV-Vis peak at 540 nm and is an indication of the presence of the gold nanoparticles insert ignore into journalissuearticles values(AuNPs);. Stretching in peaks of the FTIR showed that the biomolecules present in the seaweed extract reduced the gold ions. Master sizer results for AuNPs were within the range of 15-55 nm. Antioxidant activity carried out using DPPH free radical scavenging activity revealed significant activity for both AuNPs. Biosynthesized AuNPs also showed antimicrobial activity against Salmonella typhii and Escherichia coli . The S. lomentaria gold nanoparticles exhibited great inhibition against Escherichia coli, whereas S. filamentosa gold nanoparticles showed great antibacterial activity against S .typhi. Synthesized AuNPs using S. lomentaria and S. filamentosa   as stabilizing agents showed convincing antioxidant and antimicrobial activity against gram negative and gram positive bacteria.
Keywords : Gold nanoparticles, antimicrobial activity, Spyridia filamentosa, Scytosiphon lomentaria

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