Plant-Based Green Synthesis of Bioactive Nanoparticles: Innovation and Application

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Phytochemistry".

Deadline for manuscript submissions: 30 November 2024 | Viewed by 1564

Special Issue Editors

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Guest Editor
National Institute for Research and Development in Chemistry and Petrochemistry, ICECHIM, 060021 Bucharest, Romania
Interests: plant extracts: phytochemical compounds; antioxidant properties; metallic nanoparticles; UV-VIS; FTIR; SEM

Special Issue Information

Dear Colleagues,

In recent years, the focus of nanotechnology has shifted from classical synthesis methods to modern, “green” methods. These methods include techniques such as biosynthesis (the development of nanomaterials using a living organism, i.e., fungi), radiation-assisted synthesis, or phytosynthesis (the development of nanomaterials using plant extracts). Very promising, this latter method includes the use of a wide range of plant-related materials, such as pulp, core, peel from fruits, stem, root, petal flowers, and the leaves from plants or algae, while also employing a wide range of solvents (including, but not limited to, water, ethanol/methanol/acetone, and single or binary/multiple mixtures). As it was demonstrated, these vegetal materials have the ability to produce nanomaterials with a wide range of applications, including medicine, engineering, agriculture, cosmetic, or environment protection. The composition, size, shape, or stability of metallic (Ag, Au, Pt, Cu, etc.) nanoparticles was investigated using UV-VIS, DLS, FTIR, SEM/TEM, and XRD techniques, among others.

The goal of the present Special Issue is to focus on the influence of the extract composition and characteristics of the vegetal materials, relating to the properties of the obtained nanoparticles, as well as the most recent findings on the development and application of phytosynthesized nanoparticles. The extracts can be characterized through a wide range of phytochemical assays (qualitative and quantitative), as well as more appropriate, analytical methods (including HPLC or GC-MS).

Dr. Raluca Șuică-Bunghez
Dr. Radu Claudiu Fierascu
Guest Editors

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  • natural extract
  • metallic nanomaterials
  • phytosynthesis

Published Papers (1 paper)

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22 pages, 13567 KiB  
Application of Lavandula angustifolia Mill. Extracts for the Phytosynthesis of Silver Nanoparticles: Characterization and Biomedical Potential
by Ioana Raluca Șuică-Bunghez, Raluca Mădălina Senin, Ana Alexandra Sorescu, Mihaela Ganciarov, Iuliana Răut, Cristina Firincă, Mariana Constantin, Ioana Cătălina Gifu, Rusăndica Stoica, Irina Fierăscu and Radu Claudiu Fierăscu
Plants 2024, 13(3), 333; - 23 Jan 2024
Viewed by 998
Nanotechnology can offer a series of new “green” and eco-friendly methods for developing different types of nanoparticles, among which the development of nanomaterials using plant extracts (phytosynthesis) represents one of the most promising areas of research. This present study details the use of [...] Read more.
Nanotechnology can offer a series of new “green” and eco-friendly methods for developing different types of nanoparticles, among which the development of nanomaterials using plant extracts (phytosynthesis) represents one of the most promising areas of research. This present study details the use of lavender flowers (Lavandula angustifolia Mill., well-known for their use in homeopathic applications) for the biosynthesis of silver nanoparticles with enhanced antioxidant and antibacterial properties. Several qualitative and quantitative assays were carried out in order to offer an image of the extracts’ composition (the recorded total phenolics content varied between 21.0 to 40.9 mg GAE (gallic acid equivalents)/g dry weight (d.w.), while the total flavonoids content ranged between 3.57 and 16.8 mg CE (catechin equivalents)/g d.w.), alongside modern analytical methods (such as gas chromatography-mass spectrometry—GC-MS, quantifying 12 phytoconstituents present in the extracts). The formation of silver nanoparticles (AgNPs) using lavender extract was studied by UV-Vis spectroscopy, Fourier-transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), and dynamic light scattering (DLS)/zeta potential, with the selected nanoparticles having crystallite sizes of approx. 14.55 nm (AgNP-L2) and 4.61 nm, respectively (for AgNP-L4), and hydrodynamic diameters of 392.4 nm (for AgNP-L2) and 391.6 nm (for AgNP-L4), determined by DLS. A zeta potential of around −6.4 mV was displayed for both samples while presenting as large aggregates, in which nanoparticle clusters with dimensions of around 130–200 nm can be observed. The biomedical applications of the extracts and the corresponding phytosynthesized nanoparticles were evaluated using antioxidant and antimicrobial assays. The obtained results confirmed the phytosynthesis of the silver nanoparticles using Lavandula angustifolia Mill. extracts, as well as their antioxidant and antimicrobial potential. Full article
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