Abstract
AbstractSelenium as an essential trace element for the health of the humans was used to hydrothermally synthesis of selenium nanoparticle (Se NPs) usingAloe veraleaf extract (ALE). Effects of synthesis parameters namely; amount of ALE (1–5 ml) and amount of Na2SeO3solution (10–30 ml), on the particle size and colour intensity of the solution containing Se NPs were studied using response surface methodology. FT-IR spectroscopy, UV-Vis spectrophotometry, DLS analyzer and TEM were used to determine the specifications of the ALE and synthesized Se NPs. Obtained results indicated that the ALE contained several bioactive compounds, which they had hydroxyl and amide І groups in their structures and these two functional groups had key roles in the reduction of the selenium ions to form Se NPs and stabilizing of them. Furthermore, spherical fabricated Se NPs using obtained optimum synthesis parameters, 4.92 mL of ALE and 13.03 mL of Na2SeO3solution, had colour intensity, mean particle size, zeta potential and polydispersity index values of 3.0% a.u., 50 nm, -18 mV and 0.344, respectively according to the DLS analysis. The synthesized Se NPs had also high antibacterial and antifungal activities against 4 selected pathogenic bacteria and spoilage fungi strains.
Highlights
Jafarizadeh-Malmiri: Selenium nanoparticles synthesis using Aloe vera leaf extract temperature, type and concentration of the leaf extract, type and concentration of the ions precursors and other operating parameters which they are strongly depended to the utilized methods [1,14,15]
The results revealed that the fabricated Se NPs with most desirable characteristics were obtained using synthesis conditions placed in the white coloured area
The obtained results from the present study revealed that Aloe vera leaf extract had several natural bioactive compounds which those could be effectively utilized in the fabrication of Se NPs without using other chemical reducing agents
Summary
Let {θi}di= dtheantoittselaeasftaconndtairndsonrudmereirnogusofvitthaemeinigse, npovlaylsuaecschoafrAid.eTsh, en A, A∗ is sel is a standard orpdroetreinings,opf htheneoeliigcecnovmapluoeusndosf,Ali∗gn(sine,es[a7p, oPnrionpso, ssitteiroonls,8.7]). NAPutsh[o9r-:11K].azInumthaesasNynotmhuesrias: Toof ktyhoeMNePdsic, atlhaendmDaeinntagloUalniivsersity, Ichikawa, Borna Fardsadegh, Faculty of Chemical Engineering, PSaahualnTderwilliger:mDaexpiamrtummensttoafbMiliattyh[e1m2,a1t3i]c.sS, UevneivraerlspitayroafmWeitsecrosnasrien,aMffeacdtiesodn, WI53706, USA,. Jafarizadeh-Malmiri: Selenium nanoparticles synthesis using Aloe vera leaf extract temperature, type and concentration of the leaf extract, type and concentration of the ions precursors and other operating parameters which they are strongly depended to the utilized methods [1,14,15]. Response surface methodology (RSM), as combination of the mathematics and statistics, is a useful technique to model and analyze of a dependent variable, which it is influenced by several independent parameters [16]. RSM has several benefits, which make it highlight as compared to the classic one parameter at-a-time optimization [12]
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