François Eya’ane Meva

ORCID: 0000-0003-3135-9334
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About
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Research Areas
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Nanoparticles: synthesis and applications
  • Magnetism in coordination complexes
  • Moringa oleifera research and applications
  • Metal complexes synthesis and properties
  • Diverse Scientific Research Studies
  • Medicinal Plant Research
  • Medicinal Plants and Neuroprotection
  • Lanthanide and Transition Metal Complexes
  • Essential Oils and Antimicrobial Activity
  • Insect Pest Control Strategies
  • Metal-Catalyzed Oxygenation Mechanisms
  • Natural Antidiabetic Agents Studies
  • Graphene and Nanomaterials Applications
  • Crystal structures of chemical compounds
  • Crystallography and molecular interactions
  • Mangiferin and Mango Extracts
  • Synthesis and Biological Evaluation
  • Nanocomposite Films for Food Packaging
  • Ethnobotanical and Medicinal Plants Studies
  • Advanced Drug Delivery Systems
  • Phytochemistry and Biological Activities
  • Curcumin's Biomedical Applications
  • African Botany and Ecology Studies

University of Douala
2015-2024

Heinrich Heine University Düsseldorf
2019-2024

Universitätsklinikum Würzburg
2024

University of Würzburg
2024

University of Hull
2016-2020

Pharmaceutical Biotechnology (Czechia)
2015

Chemnitz University of Technology
2007-2008

Introduction: There is emerging interest in medicinal plants the biomedical field, due to their multitude of chemicals which show anti-inflammatory, antimicrobial, antiviral, or antitumoral potential. Research on has shown that nanotechnology could offer new solutions quality control, delivery aspects, sustaining herbal biological activities. This work reports preparation and characterization silver nanoparticle-mediated Selaginella myosurus plant extract. Methods: Ultraviolet-visible...

10.2147/ijn.s174530 article EN cc-by-nc International Journal of Nanomedicine 2018-12-01

Nanobiotechnology is one of the most promising areas in modern nanoscience and technology. Metallic nanoparticles have found uses many applications different fields, such as catalysis, photonics, electronics, medicine agriculture. Synthesized through chemical physical methods are expensive low biocompatibility. In present study, silver been synthesized from Megaphrynium macrostachyum (Benth. & Hook. f.) Milne-Redh., Marantaceae, leaf extract. a plant with large leaves rainforest West Central...

10.1016/j.bjp.2016.06.002 article EN cc-by-nc-nd Revista Brasileira de Farmacognosia 2016-07-21

Powder X-ray diffraction and dynamic light scattering (DLS) sizing of silver (Ag) palladium (Pd) nanoparticles produced within aqueous plant extract the effect introducing an ionic liquid are reported in this paper. The simple novel synthesis using reducing power Persea americana (Pa) bark is adding 1-ethyl-3-methylimidazolium tosylate [EMIm][Tos] described. Detailed powder interpretation allowed determination crystalline grain sizes 16 ± 4 nm for Ag–Pa, 13 2 Ag–Pa[EMIm][Tos], 3 Pd–Pa 9 1...

10.1016/j.jmrt.2018.12.017 article EN cc-by-nc-nd Journal of Materials Research and Technology 2019-03-12

Tithonia diversifolia is widely used in African traditional medicine for the treatment of a large number ailments and disorders, including malaria. In present study, we evaluated repellent activity essential oils (EO) this plant against Anopheles coluzzii, major vector malaria Africa. Fresh leaves T. were to extract EO, which perform repellency assays laboratory field using commercially available N,N-Diethyl-meta-toluamide (DEET) Cymbopogon (C.) citratus EO as positive controls vaseline...

10.1038/s41598-023-31791-6 article EN cc-by Scientific Reports 2023-04-12

In this study, gold nanoparticles with Eutrema japonicum (AuNPs-E.j.) were synthesized using the butylene glycol extract of plant’s grated stem and Au(III) chloride trihydrate solution. The primary characterization of...

10.1039/d5ma00065c article EN cc-by-nc Materials Advances 2025-01-01

This study reports the preparation and characterization of silver nanoparticles synthesized by mediation plant weed Stachytarpheta cayennensis through solution method. Ultraviolet visible spectroscopy (UV-Vis) determines presence in solution. Infrared (IR) proves organic molecules at particles interface. Powder X-ray diffraction (PXRD) provides phase composition crystallinity. Shape was showed scanning electron microscopy (SEM), energy dispersive (EDX) demonstrated elemental mapping...

10.4236/jbnb.2019.102006 article EN Journal of Biomaterials and Nanobiotechnology 2019-01-01

In this study, Strychnos phaeotricha liana bark extract was used as a metabolite container both on the surface of metallic nanosilver and encapsulated by chitosan polymer. The plant able to reduce Ag + into 0 efficiently, encapsulation rate determined. synthesized nanoderivatives were characterized using ultraviolet‐visible spectrophotometry (UV‐Vis), Fourier transform infrared (FTIR) spectroscopy, powder X‐ray diffraction (PXRD), scanning electron microscopy (SEM), energy dispersive (EDX)...

10.1155/2022/3491267 article EN cc-by Journal of Nanomaterials 2022-01-01

The origin of larger<italic>J</italic>values trinuclear bis(oxamidato)<italic>versus</italic>bis(oxamato) type complexes is explained by an interplay with the spin densities their mononuclear precursors.

10.1039/c4dt03579h article EN cc-by Dalton Transactions 2015-01-01

The development of drug-resistant strains is rising and the search for new novel ways fighting or reemerging microbes goes on. A hope treating such multidrug-resistant infections came from plants mediated nanoparticles since nature a generous source which provides variety chemical compounds that can be used drug discovery. Silver are reported to possess antiviral, antibacterial, antifungal, antiparasitic, larvicidal activity anticancer properties. We green synthesis silver food Megaphrynium...

10.1155/2017/6834726 article EN Journal of Nanomaterials 2017-01-01

The present study reports a cost-effective and eco-friendly silver nanoparticles synthesis using Microsorum punctatum frond extract as new solution in the development of therapeutic strategies against inflammation. Egg albumin denaturation model was used to ascertain anti-inflammatory potential biosynthesized nanoparticles. Plasmon resonance surface peaked at 440 nm particles interface were coated with organics. X-ray diffraction pattern showed nanocrystallite nature 20.05 39.46 size for...

10.26502/jnr.2688-85210014 article EN Journal of Nanotechnology Research 2020-01-01

The progress in the field of nanotechnology has contributed to development tools for combating most critical problems developing countries. requirements that such should meet are low-cost and resource settings, environmental protection, ease use, availability. use plant properties generation nanoparticles (NPs), which serve as bioinsecticides combat plasticity resistance mosquitoes parasites, is considered possible. Here, we report first time larvicidal activity silver (Ag) NPs (AgNPs)...

10.4236/jbnb.2020.111004 article EN Journal of Biomaterials and Nanobiotechnology 2019-12-11

Two mononuclear bis(oxamato) complexes with the formula [nBu4N]2[M(2,3-acbo)] (M = Ni (2), Cu (3), acbo anthra-9,10-chinone-2,3-bis(oxamato) have been synthesized starting from symmetric diethyl N,N′-anthra-9,10-chinone-2,3-bis(oxamate) (1, 2,3-acboH2Et2). The crystal structures of 2 and 3 determined, verifying that transition metal ions are η4(κ2N,κ2O) coordinated by [2,3-acbo]4− ligands. Using asymmetric N,N′-anthra-9,10-chinone-1,2-bis(oxamate) (4, 1,2-acboH2Et2) leads, under otherwise...

10.1039/b804382e article EN Dalton Transactions 2008-01-01

This work focuses on the synthesis of silver nanoparticles using fresh cocoa pods from “Theobroma cacao” extract plant through reduction ions (Ag+) into Ag (0) by a green chemistry process, subsequently used as an electrode material. Reaction factors such pH, incubation time, and ion concentration were optimized during formation nanoparticles. The synthesized characterized ultraviolet spectrophotometry (UV-Vis), Fourier transform infrared spectroscopy (FT-IR), powder X-ray diffraction...

10.1155/2023/6447994 article EN cc-by Journal of Chemistry 2023-11-21

The increasing demand to produce secure and cost-effective healthcare nanodevices is at the forefront of research in nanotechnology.The present work reports a simple eco-friendly synthetic method for silver nanoparticles using bark aqueous extract Mangifera indica (MI-AgNPs) management inflammation.MI-AgNPs were obtained following incubation mixture plant with nitrate solution (10:50 v/v).The sample was biophysically characterized Ultraviolet Visible spectroscopy (UV-Vis), Fourier Transform...

10.24214/ijghc/hc/9/3/34560 article EN international journal of green and herbal chemistry 2020-08-15
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