Production of Hydroxyapatite Nanoparticles Using Tricalcium- Phosphate by Alkanindiges illinoisensis

Ghashghaei, Sara; Emtiazi, Giti

doi:10.4172/2324-8777.1000121

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…Based on the properties mentioned, the applications of hydroxyapatite can be used in tissue engineering, dentistry, drug delivery, chromatography column, catalyst, water purification, industrial effluent and application in sensors. The synthesis of nanoscale hydroxyapatite by many bacteria included Serratia marcescens, Enterobacteria., Staphylococcus, Alkanindiges illinoisensis and many other alkaline phosphatase producer microbe has been reported [8,9]. Enzymatic synthesis by phosphatase and urease also are reported that calcium phosphate precipitates are formed at 37°C and pH of 7.4 in urea-and enzyme urease-were found to be amorphous, following overnight drying at 90°C.…”

Section: Biological Synthesismentioning

confidence: 99%

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Chemical and Biological Synthesis of Hydroxy Apatite: Advantage and Application

Emtiazi¹,

Shapoorabadi²,

Mirbagheri³

2019

Int J Microbiol Curr Res

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Production of nanostructured materials, similar to the complex structure of nanocalcite of hard tissues, egg shell, teeth and bone, are an attractive field of research. Calcium phosphates with clinical applications, such as hydroxyapatite (HA) (Ca 10 (PO4) 6 (OH) 2 ) have been widely used in regeneration of bone and fabrication of medical implants, mainly due to the chemical composition and structure similarity between HA and the mineral part of bones and teeth, and also as gene and drug delivery is used. High surface area of HA make it useful for drug release. Moreover, it has antibacterial property and potential applications in rapid microbial detection, treatment of heavy metals from aqueous solutions. Biological synthesis has been attracted more attention for compatibility to human safety.

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Section: Biological Synthesismentioning

confidence: 99%

“…For example, the Gram negative Enterobacter (Serratia marcescens, strain PTCC 1187) is used for biogeneration of hydroxyapatite. This bacterium is cultured at a temperature of 30°C and culture medium included phosphate [9].…”

Section: Biological Synthesismentioning

confidence: 99%

Chemical and Biological Synthesis of Hydroxy Apatite: Advantage and Application

Emtiazi¹,

Shapoorabadi²,

Mirbagheri³

2019

Int J Microbiol Curr Res

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“…It is hypothesized that biomolecules such as flavonoids (Raghunandan et al 2009), polyols (Begum et al 2009), terpenoids (Shankar et al 2004) and organic acids (Sharon et al 2012) present in biological entities control the structure, phase, orientation and nanostructural topography of inorganic crystals, resulting in nanosized particles (Ghashghaei and Emtiazi 2013). Examples of the carbonyl group such as aldehyde, ketone and carboxylic acid that are present in biomolecules actively reduce the metal salts to metals by donating electrons, thereby acting as reducing agents (Shankar et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Chlorococcum sp. MM11—a novel phyco-nanofactory for the synthesis of iron nanoparticles

et al. 2015

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Green synthesis of iron nanoparticles using a soil microalga, Chlorococcum sp. MM11, and their application in chromium remediation have been investigated. Sphericalshaped nanoiron was synthesized by treating the exponentially growing culture of Chlorococcum sp. with 0.1 M iron chloride solution for 48 h and incubating it under shaking in the dark. The appearance of a yellowish brown colour indicated the biotransformation of bulk iron into nanoiron. Morphological characteristics of nanoparticles with transmission electron microscopy (TEM) and dynamic light scattering (DLS) confirmed the presence of spherical-shaped nanoiron ranging in size from 20 to 50 nm. TEM imaging also revealed the localization of nanoiron on the microalgal cell surface, inside as well as outside the cell. Fourier transform infrared spectroscopy (FTIR) analysis confirmed the involvement of carbonyl and amine bonds from polysaccharides and glycoproteins present in the algal cell wall in the bioreduction as well as capping of nanoiron. Phyco-synthesized iron nanoparticles were tested for their efficiency in reducing Cr(VI), a toxic environmental pollutant. The results showed that nanoiron reduced 92 % of 4 mg L −1 Cr(VI) to Cr(III) instantaneously, while bulk iron reduced only 25 %. Thus, iron nanoparticles with high reactivity, greater stability and environmentally benign and economically viable properties can be synthesized using phyco-nanofactories like Chlorococcum sp. MM11.

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