Yilmaz, Mustafa TahsinIspirli, HumeyraTaylan, OsmanDertli, Enes2024-10-042024-10-0420200023-64381096-1127https://doi.org/10.1016/j.lwt.2020.109497http://hdl.handle.net/20.500.12403/3717In this study, alternan isolated from Lactobacillus reuteri E81 was used as the stabilising agent to produce alternan-stabilised silver nanoparticles (AgNPs-Alt) and AgNPs-Alt were characterized and their antibacterial and antifungal activities were tested. The formation and the stability of AgNPs-Alt were determined by UV-vis spectroscopy analysis. SEM and TEM analysis revealed the uniform morphology of AgNPs-Alt with an average size of similar to 50 nm. The crystalline nature of the AgNPs-Alt was confirmed by XRD analysis. The interactions of alternan functional groups with silver was observed by FTIR analysis and thermal characteristics of AgNPs-Alt were determined by DSC analysis. Finally, the antibacterial and the antifungal activities of AgNPs-Alt were tested and AgNPs-Alt revealed inhibitory effects to pathogenic strains at 0.25 mg ml(-1) concentration and this activity was observed to be concentration dependent. For the antifungal activity, a higher level of AgNPs-Alt was required compared to the antibacterial activity.eninfo:eu-repo/semantics/closedAccessAlternanSilver nanoparticlesAntibacterialAntifungalArticle12810.1016/j.lwt.2020.1094972-s2.0-85084186535Q1WOS:000540290000052Q1