INVESTIGATING THE ANTIMICROBIAL EFFECTS OF NANOPARTICLES BACTERIA ISOLATED FROM AGRICULTURAL TERRITORYS OF URMIYE , IRAN

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 274

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شناسه ملی سند علمی:

MEDISM19_368

تاریخ نمایه سازی: 13 مهر 1397

چکیده مقاله:

Background and Aim:The use of microorganisms in the synthesis nanoparticles is known as an eco-friendly method. Moreover, because of the ability of microorganisms to synthesize nanoparticles of various sizes, shapes and morphologies, this method has gained extreme attentions in recent years. The aim of this study was, therefore, to investigate the antimicrobial effects of nanoparticles synthesized by bacteria isolated from agricultural territorys of Urmiye , Iran.Methods:This study was carried out in 2017. nanoparticles were characterized by SEM, EDS and XRD analyzes. The antimicrobial effects of nanoparticles were also assessed against some pathogenic bacteria.Results:Of the 40 nanoparticle producing bacteria, the strains that were able to produce nanoparticles with high antimicrobial activity yielded under different environmental conditions, were selected. The results of scanning electron microscopy (SEM) confirmed the presence of nanoparticles with a spherical shape. EDS analysis showed that silver content of the particles was about 60 wt %. Sequence alignment and phylogenetic tree results showed that M9 and B7 strains are closely related to Bacillus cereus and Pseudomonas argentinensis, respectively, with 99% homology.Conclusion:The results showed that the M9 and B7 strains can synthesize nanoparticles with high antimicrobial effects under different environmental conditions.

نویسندگان

Mohammad Asadi

shahid beheshti univercite

Elnaz Abedini

mayis universite