scholarly journals Effects of Biologically Synthesized Iron Oxide Nanoparticles on Rhizospheric Microorganisms Associated with Tomato (Solanum lycopersicum L.)

2021 ◽  
Vol 3 (4) ◽  
pp. 110-117
Author(s):  
Rachel Enechojo Oijagbe ◽  
Solomon Oyenye Nkwor ◽  
Hakeem Olalekan Shittu
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Fungal Community ◽  
Precursor Solution ◽  
Diversity Indices ◽  
Plate Count ◽  
Oxide Nanoparticles ◽  
High Concentration ◽  
Solanum Lycopersicum L ◽  
Fungal Abundance

In this study, the effect of iron oxide nanoparticles on soil rhizospheric microbial communities of tomato was investigated. Iron oxide nanoparticles were biologically synthesized using plant extract from Azadirachta indica, and characterized using a UV-VIS spectrophotometer. Varying concentrations (25, 50, 75, or 100 %) of biosynthesized iron oxide nanoparticles or precursor solution was rhizoinjected into soils in which tomato plants were grown. Plate count method was used to analyse population size and community structure of test subjects. Quantitative analysis of the bacterial and fungal community was determined and diversity indicies were calculated. The results obtained from the analysis revealed that the addition of iron oxide nanoparticles to the soil changed bacterial and fungal community with respect to the control. Also, the bacterial and fungal abundance were changed. Some tolerant microorganisms such as Micrococcus, Stapylococcus, Aspergillus, Trichoderma and Penicillium could withstand high concentrations of iron oxide nanoparticles. Shannon diversity indices showed that there was difference in the diverisity of each concentration of iron oxide nanoparticles for both fungal and bacterial communties. The study's findings showed that high concentration of iron oxide nanoparticles in the soil had adverse effect on both the tomato and the microorganisms associated with the root of the tomato. Further study needs to be conducted to ascertain the magnitude of impact iron oxide nanoparticles will have on plants and rhizosphere microbiome.

Removal of Aluminum from Water and Wastewater Using Magnetic Iron Oxide Nanoparticles

2013 ◽  
Vol 829 ◽  
pp. 752-756 ◽  
Author(s):  
Razieh Asrarian ◽  
Reza Jadidian ◽  
Hooshang Parham ◽  
Sara Haghtalab
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Ferrous Metal ◽  
Complete Removal ◽  
Polluted Water ◽  
Oxide Nanoparticles ◽  
High Concentration ◽  
Magnetic Iron Oxide Nanoparticles ◽  
Magnetic Iron Oxide ◽  
Aluminum Ions

Aluminum is the most widely used non ferrous metal, but its considered as a highly toxic element in drinking water at high concentration and the trace aluminum content in food must be controlled. This paper shows effective removal of aluminum from water and industrial wastewater by magnetic nanoparticle. The method is fast, simple, cheap, effective and safe for treatment of aluminum polluted waters. Preparation of adsorbent is easy and removal time is short. magnetic iron oxide nanoparticles (MIONPs) can adsorb up to 99.8% of 60 ng ml-1of Al ions from polluted water. The required time for complete removal of aluminum ions was 3 minutes. Variation of pH and high electrolyte concentration (NaCl) of the solution do not have considerable effect on the aluminum removal efficiency.

Preparation of Iron Oxide Nanoparticles by a Pyrosol Technique

2007 ◽  
Vol 353-358 ◽  
pp. 2175-2178 ◽  
Author(s):  
W. Thongsuwan ◽  
Aukkaravittayapun Suparerk ◽  
Pisith Singjai
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Nitrate Solution ◽  
Precursor Solution ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
Air Stream ◽  
Diffraction Patterns ◽  
Microscopy Images ◽  
Good Agreement

Iron oxide nanoparticles were prepared from an iron nitrate solution by a pyrosol technique. The precursor solution was atomized by a mist generator in order to form an aerosol which was brought into a tube furnace by a controlled flowing air stream. The pyrolysis of the aerosol was occurred to form the particles inside the furnace at 350 °C. Scanning electron microscopy images have shown that a mean diameter of the particles is in good agreement with the third root of the precursor concentration. X-ray diffraction patterns have revealed that the main peaks from the samples are corresponding to the α-Fe2O3 phase.

scholarly journals Quantifying iron-oxide nanoparticles at high concentration based on longitudinal relaxation using a three-dimensional SWIFT look-locker sequence

2014 ◽  
Vol 71 (6) ◽  
pp. 1982-1988 ◽  
Author(s):  
Jinjin Zhang ◽  
Ryan Chamberlain ◽  
Michael Etheridge ◽  
Djaudat Idiyatullin ◽  
Curtis Corum ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Three Dimensional ◽  
Oxide Nanoparticles ◽  
High Concentration ◽  
Longitudinal Relaxation

Quantifying iron-oxide nanoparticles at high concentration based on longitudinal relaxation using a three-dimensional SWIFT look-locker sequence

2014 ◽  
Vol 71 (6) ◽  
pp. spcone-spcone
Author(s):  
Jinjin Zhang ◽  
Ryan Chamberlain ◽  
Michael Etheridge ◽  
Djaudat Idiyatullin ◽  
Curtis Corum ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Three Dimensional ◽  
Oxide Nanoparticles ◽  
High Concentration ◽  
Longitudinal Relaxation

TARGETING CYCLIN B1 WITH ANTISENSE OLIGONUCLETOTIDES- COATED SUPERPARAMAGNETIC IRON OXIDE NANOPARTICLES

2018 ◽  
Vol 6 (10) ◽  
Author(s):  
Hosam Zaghloul ◽  
Doaa A. Shahin ◽  
Ibrahim El- Dosoky ◽  
Mahmoud E. El-awady ◽  
Fardous F. El-Senduny ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Cellular Uptake ◽  
Superparamagnetic Iron Oxide ◽  
Cyclin B1 ◽  
Superparamagnetic Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Mcf7 Cells ◽  
M Phase ◽  
The Impact

Antisense oligonucleotides (ASO) represent an attractive trend as specific targeting molecules but sustain poor cellular uptake meanwhile superparamagnetic iron oxide nanoparticles (SPIONs) offer stability of ASO and improved cellular uptake. In the present work we aimed to functionalize SPIONs with ASO targeting the mRNA of Cyclin B1 which represents a potential cancer target and to explore its anticancer activity. For that purpose, four different SPIONs-ASO conjugates, S-M (1–4), were designated depending on the sequence of ASO and constructed by crosslinking carboxylated SPIONs to amino labeled ASO. The impact of S-M (1–4) on the level of Cyclin B1, cell cycle, ROS and viability of the cells were assessed by flowcytometry. The results showed that S-M3 and S-M4 reduced the level of Cyclin B1 by 35 and 36%, respectively. As a consequence to downregulation of Cyclin B1, MCF7 cells were shown to be arrested at G2/M phase (60.7%). S-M (1–4) led to the induction of ROS formation in comparison to the untreated control cells. Furthermore, S-M (1–4) resulted in an increase in dead cells compared to the untreated cells and SPIONs-treated cells. In conclusion, targeting Cyclin B1 with ASO-coated SPIONs may represent a specific biocompatible anticancer strategy.

Ferrozine Assay for Simple and Cheap Iron Analysis of Silica-Coated Iron Oxide Nanoparticles

2018 ◽  
Author(s):  
Hattie Ring ◽  
Zhe Gao ◽  
Nathan D. Klein ◽  
Michael Garwood ◽  
John C. Bischof ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Hydrofluoric Acid ◽  
Inductively Coupled Plasma ◽  
Silica Shell ◽  
Oxide Nanoparticles ◽  
Inductively Coupled ◽  
Digestion Process ◽  
Plasma Methods ◽  
Iron Analysis

The Ferrozinen assay is applied as an accurate and rapid method to quantify the iron content of iron oxide nanoparticles (IONPs) and can be used in biological matrices. The addition of ascorbic aqcid accelerates the digestion process and can penetrate an IONP core within a mesoporous and solid silica shell. This new digestion protocol avoids the need for hydrofluoric acid to digest the surrounding silica shell and provides and accessible alternative to inductively coupled plasma methods. With the updated digestion protocol, the quantitative range of the Ferrozine assay is 1 - 14 ppm. <br>

Ferrozine Assay for Simple and Cheap Iron Analysis of Silica-Coated Iron Oxide Nanoparticles

2018 ◽  
Author(s):  
Hattie Ring ◽  
Zhe Gao ◽  
Nathan D. Klein ◽  
Michael Garwood ◽  
John C. Bischof ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Hydrofluoric Acid ◽  
Inductively Coupled Plasma ◽  
Silica Shell ◽  
Oxide Nanoparticles ◽  
Inductively Coupled ◽  
Digestion Process ◽  
Plasma Methods ◽  
Iron Analysis

The Ferrozinen assay is applied as an accurate and rapid method to quantify the iron content of iron oxide nanoparticles (IONPs) and can be used in biological matrices. The addition of ascorbic aqcid accelerates the digestion process and can penetrate an IONP core within a mesoporous and solid silica shell. This new digestion protocol avoids the need for hydrofluoric acid to digest the surrounding silica shell and provides and accessible alternative to inductively coupled plasma methods. With the updated digestion protocol, the quantitative range of the Ferrozine assay is 1 - 14 ppm. <br>

EB PVD synthesis of iron oxide nanoparticles and their biological activity

2020 ◽  
Vol 2020 (3) ◽  
pp. 54-61
Author(s):  
S.E. Litvin ◽  
◽  
Yu.A. Kurapov ◽  
E.M. Vazhnichaya ◽  
Ya.A. Stel’makh ◽  
...  
Keyword(s):  
Biological Activity ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles
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