Noelia González-Ballesteros

Noelia González-Ballesteros
University of Vigo | UVIGO · Department of Inorganic Chemistry

PhD

About

36
Publications
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457
Citations

Publications

Publications (36)
Article
The significance of gold nanoparticles in nanobiotechnology and the trend towards the development of green methods of synthesis has boosted research on the use of new natural resources, such as plants, as reducing agents for the formation of nanoparticles. This article focuses on Hypericum perforatum L., a plant known since ancient times for its mu...
Article
The integral utilization of sustainable resources with versatile, efficient and cleaner processes is encouraged. Hydrothermal treatment with subcritical water is a chemical free, tunable and rapid technology providing enhanced yield compared to conventional extraction and was explored for the benign by design extraction and depolymerization of carr...
Article
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This study reports on the green and cost-efficient synthesis of gold nanoparticles from three different red algae extracts. The nanoparticles synthesized were fully characterized by UV-Vis spectroscopy, HRTEM, and Z-potential. Relevant components occurring in the extracts, such as polysaccharides or phenolic content, were assessed by analytical tec...
Article
Crude fucoidans from Sargassum muticum obtained by hot water extraction at 40–80 °C were used for the synthesis of gold nanoparticles (AuNPs). The effect of operation temperature on the yield and properties of the extract was determined. The alginate fraction partially coextracted precipitated as calcium alginate and showed rheological properties s...
Article
Carrageenan was extracted from Mastocarpus stellatus using hot water extraction under atmospheric and pressurized conditions. The influence of heating temperature during a non-isothermal heating profile up to temperatures in the range 70-190 °C was studied to evaluate the extraction yields and properties of the carrageenan fraction. Under the selec...
Article
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Introduction: Research on gold nanoparticles (AuNPs) occupies a prominent place in the field of biomedicine nowadays, being their putative toxicity and bioactivity areas of major concern. The green synthesis of metallic nanoparticles using extracts from marine organisms allows the avoidance of hazardous production steps while maintaining features...
Article
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Macroalgae are sources of bioactive compounds that are interesting from both a chemical and a medical point of view. Although their use in biomedicine has increased significantly in recent years, tests conducted to date have been mostly related to species from temperate latitudes, with the potential application of Antarctic biodiversity being minor...
Article
Over the last years, there has been an increasing trend towards the use of environmentally friendly processes to synthesize nanomaterials. In the case of nanomedicine, the use of bionanofactories with associated biological properties, such as seaweed, has emerged as a promising field of work due to the possibility they open for both the preservatio...
Article
The present work reports on the antibacterial and antioxidant activity of gold and silver nanoparticles, synthesized by an extract of the brown macroalga Sargassum muticum (SM). These nanoparticles were synthesized and fully characterized by means of UV–Vis spectroscopy and electron microscopy. These techniques confirmed that spherical nanoparticle...
Article
In this paper, we explore the drastic differences in transport properties and catalytic activity for two structural polymorphs of NiP2: cubic (Pa-3 ; No. 205) and monoclinic NiP2 (C2/c; No. 15). The former one has been long assumed to be the high-pressure metastable phase, as it had been originally synthesized through high-pressure methods. Synthet...
Article
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We report excellent electrocatalytic performance by AlFe2B2 in the oxygen-evolution reaction (OER). The inexpensive catalytic material, prepared simply by arc-melting followed by ball-milling, exhibits high stability and sustained catalytic performance under alkaline conditions. The overpotential value of 0.24 V observed at the current density of 1...
Cover Page
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Chemical ordering in CuInSe2 nanoparticles: Cu and In segregate over distinct framework positions within perfect Se wurtzite sublattice resulting in hexagonal plate-like morphology
Article
We report excellent electrocatalytic performance by AlFe 2 B 2 in the oxygen-evolution reaction (OER). The inexpensive catalytic material, prepared simply by arc-melting followed by ball-milling, exhibits high stability and sustained catalytic performance under alkaline conditions. The overpotential value of 0.24 V observed at the current density o...
Article
Full-text available
Chalcogenide semiconducting nanoparticles are promising building blocks for solution-processed fabrication of optoelectronic devices. In this work, we report a new large-scale colloidal synthesis of metastable CuInSe2 nanoparticles with hexagonal plate-like morphology. Powder X-ray diffraction analysis of the nanoparticles showed that the structure...
Article
Marine bio-resources are being widely studied as an invaluable source of compounds with therapeutic applicability. In particular, macroalgae contain an extended variety of bioactive compounds with different structures and promising biological applications. In this work, Ulva lactuca L. (hereafter UL) was utilyzed for the synthesis of gold and silve...
Article
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Many research groups, institutions and organizations are involved in discovering the most efficient kiwifruit farming practices for effective control of Pseudomonas syringae pv. actinidiae (Psa). This complicated process requires the analysis and understanding of how environmental factors affect vine susceptibility, which factors favor grow and inf...
Chapter
Cancer is not a static disease that can be easily monitored and treated. It is a dynamic, time-dependent and environment-dependent pathology in which all molecular and cellular interactions are constantly reshaped in response to environmental stimuli. None of the current treatment approaches, which include the combination of tumour removal by surge...
Article
In recent years, the management of food waste processing has emerged as a major concern. One such type of food waste, grape pomace, has been shown to be a great source of bioactive compounds which might be used for more environmentally - friendly processes for the synthesis of nanomaterials. In this study, grape pomace of Vitis vinifera has been us...
Article
In this study, two Antarctic macroalgae (Rhodophyta Palmaria decipiens and Phaeophyta Desmarestia menziessi) were selected in order to report their use for the biosynthesis of nanomaterials. Two aqueous extracts of the macroalgae were prepared and their reducing activity, total phenolic content and DPPH scavenging activity were determined, showing...
Article
This study is the first dealt with the use of brown macroalgae Cystoseira baccata (CB) extracts in obtaining gold nanoparticles (Au@CB) through an eco-friendly, fast, one-pot synthetic route. The formation of spherical, stable, polycrystalline nanoparticles with mean diameter of 8.4 ± 2.2 nm was demonstrated by UV–vis spectroscopy, TEM, HRTEM, STEM...
Article
Three novel copper(I) complexes with three methyl 4-aryl-6-methyl-3,4-dihydropyrimidine-2(1H)-thione-5-carboxylate ligands were synthesized and fully characterized by elemental analysis, magnetic susceptibility, molar conductivity, ESI-MS, FTIR, UV-Vis and NMR. The difference between the three ligands is located in the aryl group: 4-(tert-butyl)phe...
Article
New copper(I) complexes of four methyl 4-aryl-6-methyl-3,4-dihydropyrimidine-2(1H)-thione-5-carboxylate ligands, where the aryl group is phenyl (HL1), 1-naphthalenyl (HL2), 2-bromophenyl (HL3) and 2-chlorophenyl (HL4), have been synthesized. Structural characterization was carried out using different techniques, such as elemental analysis, mass spe...
Conference Paper
In the context of our research project which is focused on the green synthesis of new nanomaterials with biomedical application, an aqueous extract of Cystoseira baccata was used to synthesize gold nanoparticles by reduction of HAuCl4 at room temperature. C. baccata is a common brown algae widely distributed along the subtidal rocky shores of the N...
Presentation
Dihydropyrimidin-2(1H)-ones present very interesting therapeutic and pharmacological properties such as channel blockers, alpha-1a-adrenergic receptor antagonists, mitotic kinesin inhibitors, antihypertensive agents, neuropeptide Y antagonists, and antiviral and antibacterial agents. Methyl 4-(4-bromophenyl)-6-methyl-3,4-dihydropyrimidin-2(1H)-one-...
Presentation
Metal complexes have been studied for their interesting and wide properties and different applications in the medical field. Among them, copper complexes of diferent ligands have been investigated for their biological activity as antibacterial, antifungal, antitumor and anti-inflamatory, as well as their used in diagnostics. Continuing our research...
Conference Paper
Full-text available
Copper is an essential metal that can be found in trace amounts in all living organisms. Copper deficiency or toxicity is implicated in a large variety of pathological conditions, like Menkes syndrome and Wilson's disease. In recent years, inorganic complexes of copper have been investigated for their therapeutic and diagnostic potential. Some exam...
Conference Paper
Full-text available
Microwave irradiation has been applied as a non-conventional reaction condition in several areas of chemistry such as organic and polymer synthesis or analytical chemistry. However, microwave synthesis of coordination and organometallic compounds has been less explored[1]. Copper is an essential trace nutrient for organisms. It has been established...
Presentation
Full-text available
In the past few decades, dihydropyrimidinones, also known as Biginelli compounds have been attracted great interest due to their biological activity. Dihydropyrimidinones and the corresponding thione derivatives have been used, among others applications, as antibacterial and anticancer drugs. Brominated Biginelli-type 4,6-diaryl-3,4-dihydropyrimidi...
Presentation
Full-text available
Monastrol, (ethyl-4-(3-hydroxyphenyl)-6-methyl-2-sulfanylidene-3,4-dihydro- 1H-pyrimidine-5-carboxylate) is known for its capability as inhibitor of mitotic kinesin Eg5. Compared with the traditional chemotherapeutic agents, this kind of inhibitors does not lead to the neuropathic side effects, so kinesin spindle protein has become a novel and attr...

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