Abstract Recently, plant-mediated route or green approach for preparing metal and oxide nanoparticles has received enormous attention due to the ease of preparation environmental friendliness when compared physical chemical methods. Plants contain phytochemicals which have been proposed as bio-reductants capping agents forming nanoparticles. Therefore, this study was aimed prepare magnesium (MgONPs) using aqueous extract Manihot esculenta leaf. The leaf first analyzed in a gas...

Bioactive glass ceramic with SiO2-Ca2O-Na2O-P2O5 composition was prepared by the sol-gel method using sodium metasilicate (Na2SiO3) as silica source. The monolith obtained sintered at 1000?C for 2 hours after which X-ray diffraction (XRD) analysis showed presence of combeite (Na2Ca2Si3O9) crystalline phase. In vitro bioactivity test conducted on material simulated body fluid (SBF) formation carbonated hydroxyapatite its surface. during SBF observed to transform from a mechanically strong...

A major draw-back to large scale production of bioactive glasses is the high cost standard silica precursor, usually tetraethyl orthosilicate (TEOS). The current study describes a novel sol–gel preparation 45S5 glass using diatom biosilica from cultured cells diatom, Aulacoseira granulata as substitute TEOS. formed was characterized mechanical tester, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), diffraction (XRD) and Fourier transform infrared (FTIR)...

Artificial bone graft materials formed from wollastonite have been extensively used in repair because of their high degree bioactivity and biocompatibility, thereby justifying the development a protocol for large-scale production. This work reports novel route preparing via sol-gel process using bentonite clay as cheap silica source. The obtained was characterized morphology, elemental composition, phase composition scanning electron microscopy, energy dispersive X-ray analysis, diffraction...

Potash alkali and metal contents of ashes obtained from peels six varieties Nigeria Musa species were investigated. The – paradisiaca (plantain), ‘Gross Michel’ (Igbo banana), M.sapientum L. (paranta), ‘Wild Banana’ (omini), ‘Red’ (sweet ‘Fugamo’ (somupeke), moisture, dry matter, ash contents; concentration metals in the extracted with water ashes; ratio potassium to other corresponding extracts determined. Moisture ranged 80.9 86.7%; matter content, 13.3 19.1%; 6.3 12.0%; 69.0 81.9% 4.7...

Porous silica was synthesized via the sol-gel process using clay obtained locally from Ijero-Ekiti in Ekiti State, Nigeria and compared with under similar conditions sodium metasilicate (Na 2 SiO 3 ) comercially.The initially refluxed hydroxide (NaOH) for hours to extract form Na , which subsequently hydrolyzed a gel.The gel washed deionized water get rid of impurities, dried calcined at 800˚C hours.The powders were characterized atomic absorption spectrophotometer, Fourier transform...

Tetraethyl orthosilicate (TEOS) and trimethyl (TMOS) alkoxysilanes are expensive common precursors for silicate based solgel derived bioactive glasses. Facile approa- ches involving low cost substitutes a necessity glass implants in bone regeneration therapy. Quaternary SiO2–Na2O–CaO– P2O5 was prepared by the method from locally sourced sand as precursor. The monolith material obtained subjected to immersion studies simulated body fluid (SBF) 21 days. surface morphology composition of before...

The current work investigated the green and low-cost preparation of silver nanoparticles (AgNPs) using aqueous extract from Launaea taraxacifolia leaf studied its antimicrobial effects. was analysed in a gas chromatogram–mass spectrometer to assess phytochemicals present. UV–Vis spectrophotometer used monitor formation AgNPs, morphological assessment performed by scanning electron microscope, energy dispersive X-ray analysis determine elemental composition, particle size shape were...

Alkoxysilane precursors are the most widely used silica source for sol–gel preparation of silicate-based bioactive glass. However, due to their high cost, alternative sources such as bentonite clay desirable. In present work, was reacted with sodium hydroxide (NaOH) extract metasilicate (Na2SiO3). The obtained Na2SiO3 converted gel which then sintered at 950 ℃ 3 h give glass in quaternary composition SiO2–NaO–CaO–P2O5. resulting incubated simulated body fluid (SBF) 0–7 days evaluate...

Routes to glass-ionomer cements (GICs) have been previously explored through traditional silica-precursors, however, economic routes not fully reported. Herein, powder was prepared a new hydrolytic- and economic-route. The mechanical properties bioactivity of the GIC relative commercial were investigated. Silica derived from sodium metasilicate rather than conventional alkoxysilanes. Sodium hydrolysed with hydrochloric acid form gel, which washed until residual impurity removed, then aged...

Bioceramic material of the quaternary system; SiO2- CaO-Na2O-P2O5 that has composition similar to Bio- glass? 45S5 was prepared by sol-gel method from locally obtained bentonite clay (BTC). The monolith sintered at 1000?C for 2 h facilitate densification and phase transformation. X-ray diffraction (XRD) analysis revealed presence sodium calcium silicate, Na2Ca2Si3O9 as major crystal phase, another secondary orthorhombic NaCaPO4. Fourier transform infrared (FTIR) spectroscopic investigation...

A Bioactive glass in the quaternary system SiO 2 -Na O-CaO-P O 5 was prepared from sand as precursor place of alkoxysilanes such tetraethyl orthosilicate (TEOS) and tetramethyl (TMOS).Sodium metasilicate extracted processed to a gel via sol-gel technique.The gel, after aging dried at lower temperatures before sintering 950 o C for 3 h form Na Ca Si 9 crystals enhanced mechanical property.The monolith then subjected standard vitro bioactivity study simulated body fluid (SBF) over 0-21...

Abstract In the present report, a bioactive glass was synthesized from silica sand as economic substitute to alkoxy silane reagents. Sodium metasilicate (Na 2 SiO 3 ) obtained hydrolyzed and gelled using appropriate reagents before sintering at 950 °C for h produce in system Na OCaOP O 5 . Compression test conducted investigate mechanical strength of glass, while immersion studies simulated body fluid (SBF) used evaluate reactivity, bioactivity degradability. Furthermore, samples were...

Plant-mediated routes for synthesising metal oxide nanoparticles are gaining tremendous attention due to the benefits of technique: simplicity, cost-effectiveness, and eco-friendliness. We compared properties zinc (ZnONPs) made from aqueous leaf extracts Chromolaena odorata Manihot esculenta, both which abundant on African continent. The phytochemical composition was first assessed using gas chromatography-mass spectrometry (GC-MS) determine types biomolecules involved in reducing capping...

Abstract Glass/polymer composites can mimic the natural structure of bone by possessing a fiber-matrix configuration which provides appropriate physical and biological properties. Wollastonite ceramics are known for their promising bioactivity biocompatibility when applied in regeneration. Polyvinyl alcohol (PVA) has various attractive properties including degradability may be exploited as polymer matrix biomedical applications. Therefore, cost-effective method preparing wollastonite/PVA is...

A number of shelf life-promoting strategies have been adopted for fish and fisheries products. The in vitro preservative effect Ag-nanоparticles synthesized using Launaea taraxacifolia leaves on Atlantic cod (Gadus morhua) was investigated. treated (TRD) samples were dipped 25% silver nanoparticles (AgNPs) preparation 30 minutes analyzed at four hours intervals 24 hours. Samples cut into Head (H), Trunk (TR), Tail (TL) parts evaluated total heterotrophic bacterial counts (THBC) yeast (TYC)...

Structural alteration of synthetic implants aims to achieve better bioactivity, higher cellular response, and regulated degradability, all which are critical criteria for a biomaterial serve as graft in bone regeneration. The aim this work was synthesize silicon-substituted hydroxyapatite test its bioactivity simulated body fluid (SBF) by proving the use sodium metasilicate (Na2SiO3.9H2O) an affordable precursor silica. Thus, study evaluated vitro bone-bonding capacity (Ca10(PO4)6(OH)2) (HA)...

The ability of a controlled or modified drug delivery system to supply the in sustained way and assure on-demand bioavailability makes it preferable traditional administration. Due reliance on alkoxysilane silica precursors, preparation silica/ polymer composite material is costly. As result, this study looked into using bamboo leaf as starting material. To evaluate vitro degradability modified-release phosphate buffered saline (PBS) solution, ash from was mixed with polyhydroxy butyrate...

A controlled drug delivery system is preferable to traditional administration because it can supply the continuously and ensure on-demand bioavailability. The production of silica/polymer composite material expensive due use alkoxysilane silica precursors. As bamboo an abundant plant in Africa, we investigated stems as alternative starting material. ash from stem was mixed with polycaprolactone (PCL) solution produce a (SiO2/PCL) composite, which then loaded drug, tetracycline hydrochloride...