Isolation and identification of marine yeasts with the potential biological synthesis of selenium nanoparticle

سال انتشار: 1397
محل انتشار: بیستمین کنگره ملی و هشتمین کنگره بین‌المللی زیست‌شناسی ایران
کد COI اختصاصی: BIOCONF20_286
زبان مقاله: انگلیسی
تعداد مشاهده: 272

نویسندگان

Department of Biological Sciences, Faculty of Sciences, University of Kurdistan

چکیده

Nanotechnology is the term used to describe the creation and exploitation of materials with structural features in between those of atoms and bulk materials, 34 with at least one dimension in the nanometer range. Metal nanoparticles have various functions that are not observed in bulk phase and have been studied extensively because of their exclusive catalytic, optical, electronic, magnetic and antimicrobial wound healing and anti-inflammatory properties. The microbial synthesis of nanoparticles had been recently recognized as a promising source of nanomaterials. Due to the mass production of NPs as the easiness of controlling yeasts in laboratory circumstances, the synthesis of numerous enzymes and rapid growth with the use of simple nutrients, the yeast strains possess more benefits other organisms. Selenite is the most toxic form of Se; hence, biogeochemical cycles involving reduction of selenite (Se+4) to elemental selenium (Se0) are of paramount importance. Selenium nanoparticles (SeNPs)are gaining importance in electronics and optics due to their enhanced semiconducting, photoconducting, photoelectrical, and catalytic properties. In this paper, the production of this nanoparticle was made by the most efficient marine yeast isolated from waters of different regions. Optical images, scanning electron microscopy (SEM) and spectroscopy analysis revealed the presence of selenium crystals. Nanoparticles displayed a characteristic peak at 323 nm and their presence was confirmed by EDS (Energy dispersive X-ray spectroscopy) studies. This yeast synthesized nanoparticles under a variety of conditions. SEM and transmission electron microscopy (TEM) showed the extracellular and intracellular synthesis of nanoparticles.

کلیدواژه ها

Marine yeast, Selenium Nanoparticles,Spectroscopy, Intra/Extracellular Synthesis

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