Reactive Oxygen Species (ROS)-Mediated Antibacterial Oxidative Therapies: Available Methods to Generate ROS and a Novel Option Proposal

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(13), P. 7182 - 7182

Published: June 29, 2024

The increasing emergence of multidrug-resistant (MDR) pathogens causes difficult-to-treat infections with long-term hospitalizations and a high incidence death, thus representing global public health problem. To manage MDR bacteria bugs, new antimicrobial strategies are necessary, their introduction in practice is daily challenge for scientists the field. An extensively studied approach to treating consists inducing levels reactive oxygen species (ROS) by several methods. Although further clinical investigations mandatory on possible toxic effects ROS mammalian cells, evaluations extremely promising, topical use treat infected wounds ulcers, also presence biofilm, already clinically approved. Biochar (BC) carbonaceous material obtained pyrolysis different vegetable animal biomass feedstocks at 200–1000 °C limited O2. Recently, it has been demonstrated that BC’s capability removing organic inorganic xenobiotics mainly due persistent free radicals (PFRs), which can activate oxygen, H2O2, or persulfate absence transition metals electron transfer, generating ROS, turn degrade pollutants advanced oxidation processes (AOPs). In this context, antibacterial BC-containing PFRs have some authors against Escherichia coli Staphylococcus aureus, giving birth our idea BC-derived as novel method capable generation oxidative therapy. Here, general aspects concerning physiological pathological production regulation mechanism they could exert reviewed. methods currently adopted induce therapy discussed. Finally, first time, BC-related proposed source via AOPs.

Language: Английский

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Bamboo-Based Biochar: A Still Too Little-Studied Black Gold and Its Current Applications

Journal of Xenobiotics, Journal Year: 2024, Volume and Issue: 14(1), P. 416 - 451

Published: March 20, 2024

Biochar (BC), also referred to as “black gold”, is a carbon heterogeneous material rich in aromatic systems and minerals, preparable by the thermal decomposition of vegetable animal biomasses controlled conditions with clean technology. Due its adsorption ability presence persistent free radicals (PFRs), BC has demonstrated, among other uses, great potential removal environmental organic inorganic xenobiotics. Bamboo an evergreen perennial flowering plant characterized short five-year growth period, fast harvesting, large production many tropical subtropical countries worldwide, thus representing attractive, low-cost, eco-friendly, renewable bioresource for producing BC. their surface area increased porosity, pyrolyzed derivatives bamboo, including bamboo biochar (BBC) or activated BBC (ABBC), are considered bio-adsorbent materials removing heavy metals, well contaminants from wastewater soil, improving yield. Nowadays, increasing technological applications ABBC include employment energy sources, catalyze chemical reactions, develop thermoelectrical devices, 3D solar vapor-generation devices water desalination, efficient photothermal-conversion devices. Anyway, although it alternative biomass wood produce BC, paving way new bio- circular economy solutions, study bamboo-derived still infancy. In this context, main scope review was support stimulate further studies about possible applications, enlarging current knowledge these allowing more rational, safer, optimized application. To end, after having provided background concerning methods, we have reviewed discussed on reported recent years.

Language: Английский

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Biochar-Derived Persistent Free Radicals: A Plethora of Environmental Applications in a Lights and Shadows Scenario

Published: March 15, 2024

Biochar (BC) is a carbonaceous material obtained by pyrolysis at 200−1000 °C in the limited presence of O2 different vegetable and animal biomass feedstocks. BC has demonstrated great potential, mainly environmental applications, due to its high sorption ability persistent free radicals (PFRs) content. These characteristics enable BCs carry out direct PFRs-mediated removal/degradation organic inorganic contaminants. The types PFRs possibly present depend on temperature kind pristine biomass. Since they also can cause ecological human damage, systematic evaluation behavior, risks, or management techniques BC-derived urgent. generally could consist mixture carbon- oxygen-centered radicals, oxygenated carbon-centered depending pyrolytic conditions. Here, promote more productive beneficial use related stimulate further studies make them environmentally safer less hazardous humans, we have first reviewed most common methods used produce BC, main primary mechanisms which remove xenobiotics, as well reported for formation BCs. Secondly, discussed migration transformation; applications degrade pollutants, correlated potential possible strategies limit them.

Language: Английский

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Valorization of Banana Peel Waste into Advanced Adsorbent Beads for the Removal of Emerging Pollutants from Wastewater

Materials, Journal Year: 2025, Volume and Issue: 18(5), P. 1084 - 1084

Published: Feb. 28, 2025

This study addresses environmental concerns by utilizing banana peel waste to develop innovative adsorbent materials for wastewater treatment, aligning with circular economy principles. Spherical beads were synthesized from sodium alginate mixed various peel-based materials, including pure powder (PBP), activated carbon (AC), and magnetic (MAC). These evaluated their efficiency in removing tetracycline (TC) hexavalent chromium (Cr(VI)) as model pollutants representing antibiotics heavy metals, respectively. Characterization of the revealed functional groups thermal stability conducive effective adsorption. Adsorption trials demonstrated that MAC achieved highest removal efficiencies, up 92% TC 79% Cr(VI). The adsorption process followed pseudo-second-order kinetics Langmuir isotherms. Remarkably, retained a significant capacity across reuse cycles, indicating regenerative potential. Comparisons other adsorbents highlight competitive performance these materials. results emphasize potential peel-derived cost-effective, sustainable solutions mitigating emerging water systems, promoting valorization protection. research demonstrates novel approach sequential without intermediate regeneration, showing can effectively remove both (VI) successive cycles. finding is particularly because it reveals presence previously adsorbed actually enhanced beads' second cycle, suggesting synergistic effect had not been reported literature. innovations contribute meaningfully treatment technologies, offering new insights into development multi-functional agricultural

Language: Английский

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