The nanoparticles offered by TORSKAL are produced by green chemistry (by bio-reduction of metal salts HAuCl4), with crude and / or purified extracts from plants. These extracts have the double action of reducing the metal and stabilizing the nanoparticle formed. The size and shape of the nanoparticles formed can be modulated by various factors during the synthesis.

Eco-friendly and cost-effective procedures for the synthesis of nanoparticles represent interesting topics for biologists, chemists and materials scientists, because of the high demand to produce clean, non-toxic chemicals, environmentally benign solvents, and renewable materials. The oxidant / reducing ratio, the pH of the reaction medium, the reaction time are all factors that can influence the final compound. Synthetic optimization work has been carried out by TORSKAL to increase the yield and understand the formation of nanoparticles.

TORSKAL Spherical Gold Nanoparticles - Microscopic Image 2
TORSKAL Spherical Gold Nanoparticles - Microscopic Image 1

Our spherical gold nanoparticles

The synthesis of nanoparticles by using the bio-reducing potential of plant extracts has been demonstrated in various studies in recent years. Based on this observation, TORSKAL developed a green chemistry approach to synthesize nanoparticles using endemic plants originated from Reunion Island. Plants extracts have the double action of reducing the metal and stabilizing the formed nanoparticles.

The obtained nanoparticles are fully characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), zeta-potential, XRD, UV-Vis, FTIR and Raman spectroscopy to understand their physicochemical and biological properties.

To do this, TORSKAL benefits from a partnership with several laboratories:

  • CSPBAT (Chemistry, Structures, Properties of Biomaterials and Therapeutic Agents)
  • ICSM (Institute of Separative Chemistry of Marcoule)
  • LPQM (Quantum Molecular Photonics Laboratory)

TORSKAL also provides various scientific research services in fields like nanotechnology, biology, phytochemistry, etc. Know more here.