Synthesis of silver nanoparticles prepared with a dextran-type exopolysaccharide fromWeissella cibariaMED17 with antimicrobial functions
PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY, vol.51, no.2, pp.112-119, 2021 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 51 Issue: 2
- Publication Date: 2021
- Doi Number: 10.1080/10826068.2020.1795673
- Journal Name: PREPARATIVE BIOCHEMISTRY & BIOTECHNOLOGY
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Agricultural & Environmental Science Database, Applied Science & Technology Source, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, EMBASE, MEDLINE, Veterinary Science Database
- Page Numbers: pp.112-119
- Keywords: Antibacterial, antifungal, dextran, silver nanoparticles, GREEN SYNTHESIS, ANTIBACTERIAL ACTIVITY, EXTRACT, CHITOSAN
- Yıldız Technical University Affiliated: Yes
Abstract
Microbial polysaccharides can find distinct applications as stabilizer agents including synthesis of nanoparticles. In this study, a dextran-type exopolysaccharide (EPS) was used as the stabilizer agent for the green synthesis of silver nanoparticles (AgNPs-Dex) with antimicrobial characteristics. UV-vis spectroscopy analysis was used to test the formation of AgNPs-Dex. The uniform morphology at around 10 nm size was observed for AgNPs-Dex by TEM analysis and importantly EDX analysis demonstrated the embedment of Ag(+)ions within dextran as the stabilizer agent. XRD analysis confirmed the crystalline nature of AgNPs-Dex and FTIR analysis demonstrated the interactions of dextran functional groups with silver. DSC and TGA analysis showed the alteration in the thermal stability of AgNPs-Dex compared to the stabilizer dextran. The antibacterial and antifungal activities of AgNPs-Dex were determined against food originated pathogenic bacteria and fungi and important inhibition levels were observed at 1 mg ml(-1)concentration of AgNPs-Dex and this activity was observed to be concentration dependent.