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[Display omitted] • Egyptian basil waste is used to synthesize silver nanoparticles and enhance the antibacterial and antioxidant properties of polyurethane nanofibers. • Liquid chromatography with tandem mass spectrometry is used to analyze the chemical constituents in the basil extract. • physicochemical properties of AgNPs and impacts on nanofibers are examined, revealing a round, uniform shape with a diameter of 9.15 ± 2.5 nm. • The presence of AgNPs and basil waste significantly enhances the antimicrobial and antioxidant properties of the nanofibers compared to pure polyurethane. • TPU/AgNPs (4.0 wt%) nanofibers have the strongest ZOI against E. coli (18.2 ± 0.9 mm) and S. aureus (16.1 ± 0.7 mm) and the highest radical scavenging action against DPPH (90.2 %). The growing global population drives increased food demand, impacting the global packaging materials sector, leading to the development of active packaging to enhance food quality, shelf life, and safety. Proper packaging materials, with improved antibacterial and antioxidant barriers, are becoming important in the food sector to reduce food loss and contamination. This study uses Egyptian basil Ocimum basilicum L manufacturing wastes as a biowaste, an agro-industry waste, as a reducing and capping agent to biosynthesize silver nanoparticles (AgNPs). Then, different contents from AgNPs (0.5, 2, 4 wt%) were entrapped into polyurethane nanofiber (PUNFs) to enhance the antimicrobial and antioxidant properties. Gas chromatography/mass spectrometry (GC/MS) was employed to analyze the chemical constituents present in the aqueous peel extract of Ocimum basilicum L. The physicochemical properties of AgNPs before and after entrapped nanofibers were investigated, their antimicrobial and antioxidant properties were evaluated. As a result of the distinctive surface plasmon resonance properties exhibited by Ag (metallic nanoparticles), there are notable peaks observed at 272.5 nm and a prominent peak at 467.3 nm. TEM analyses indicated that the AgNPs were consistently round and uniform, measuring an average of 17.16 ± 1.94 nm in diameter; SEM also confirmed these findings. AgNPs were found to possess their typical crystalline structure, as evidenced by the results of XRD and TEM analyses. The rise in nanofiber diameter is responsible for the escalated AgNP concentration. The presence of AgNPs and Ocimum basilicum L biowaste significantly enhanced the antibacterial and antioxidant properties compared to pure TPU. [ABSTRACT FROM AUTHOR]

[Display omitted] • The presence of SPR peak in absorption spectrum at 440 nm confirms the formation of AR-AgNPs. • Serum renal marker levels were significantly reverted near control in AR-AgNPs treated mice. • The AR-AgNPs protected kidney tissue against gentamicin induced oxidative damage. • Oral administration of AR-AgNPs to gentamicin induced mice restored the GSH level to normal level. A study on green synthesized silver nanoparticles (AgNPs) using aqueous extract of Actiniopteris radiata and investigated the effect of A. radiata biosynthesized silver nanoparticles (AR-AgNPs) against gentamicin induced nephrotoxicity. The surface plasmon resonance (SPR) peak at 440 nm in UV–visible absorbance spectrum reveals the presence of AgNPs. DLS analysis shows that the distribution of size is normal and the average size of AgNPs converges about 100 nm. SEM revealed the consistent shape, uniform distribution, and closely packed characteristics of NPs whereas EDX confirms the presence of metallic silver with a strong peak at 3 keV. The N–H and O–H stretching vibrations are observed in the FTIR spectrum around 3450 and 3423 cm−1. Gentamicin induced changes in serum parameters resulted in a significant increase in the level of serum urea, creatinine, bilurubin and uric acids. AgNPs even at modest doses (250 mg/kg), significantly reverted the level of serum markers. The gentamicin-induced AR-AgNP in mice with the levels of CAT, GPx, SOD and TBARS ensured the protection against the oxidative damage in mice which clearly implies that enhancing the antioxidant defense mechanism. Nephrotoxicity of gentamicin induced mice were demonstrated by significantly elevated levels of blood urea, serum creatinine, bilirubin, and uric acids. The exposure of AR-Ag nanoparticles leads to a substantial decrease in blood urea and serum creatinine levels and enhanced the antioxidant and anti-nephrotoxic activity. [ABSTRACT FROM AUTHOR]

[Display omitted] • Green synthesis of Silver nanoparticles (AgNPs) from Terminelia chebula extract. • Dual selective colorimetric detection of soil pollutants, thiourea and thiophenol. • The LoD found was remarkably low with 5.79 nM for thiourea and 0.13 µM for thiophenol. • This methodology was practically applied to real soil samples for sensing of thiourea and thiophenol. • A DFT study validated the mechanism of formation of nanoparticles and detection of the pollutants. This work reported a very simple, low cost and easy green method of synthesis of silver nanoparticles (GA-AgNPs) using gallic acid (GA) extracted from Terminalia chebula to detect the soil pollutants thiourea (TU) and thiophenol (TP). The GA-AgNPs were properly characterized by different techniques involving XRD, UV–Visible spectra, XPS, FE-SEM, and Raman spectroscopy. This synthesized GA-AgNPs was used as an effective colorimetric sensor and was even employed in real soil samples. Colorimetric detection was observed in a UV–visible spectrometer by analyzing the change in surface plasmon resonance of NPs when subjected to TU and TP. The result obtained was quick and visibly detectable by the naked eye. The colorimetric study resulted in a good linear relationship and the limit of detection (LoD) was calculated to be 5.79 nM for TU and 0.13 µM for TP. A color detector smartphone application was also used to detect the intensity of color change with variations in different concentrations of TU and TP. This system approach was also applied to real soil samples. Additionally, HPLC was used to validate the presence of TU and TP in the soil and to evaluate their recovery percentage. Density functional theory (DFT) analysis was done to support the plausible mechanism of the interaction between NPs and the sensing molecules. Moreover, the synthesized NPs showed excellent selectivity towards TU and TP in the presence of a wide range of interferences. [ABSTRACT FROM AUTHOR]

[Display omitted] • Simple, safe and eco-friendly synthesis of silver nanoparticles (AgNPs) using the leaf extract of Coleus Vettiveroids. • Study the influence of silver ion concentration on the size and properties of AgNPs. • AgNPs exhibited remarkable photocatalytic degradation properties in the reduction of organic dyes, methylene blue, malachite green, and crystal violet. In this work, simple, safe and eco-friendly synthesis of silver nanoparticles (AgNPs) using the leaf extract of Coleus Vettiveroids was carried out and it showed that the chemical species variations in this common family of plant extracts can have a different reducing ability of silver ions. The nanoparticles of silver were formed by the reduction, during UV exposure, of aqueous silver nitrate solution containing leaf extract of Coleus Vettiveroids. The AgNP formation was confirmed by the appearance of Surface Plasmon Resonance (SPR) band at ∼420 nm, which is characteristic for nano silver. The size of the prepared nanoparticles was characterised using Dynamic Light Scattering (DLS), average particle size was around 41.4 nm and for Transmission Electron Microscopy (TEM) the size was found to be ∼30 nm. The biogenic AgNPs found to have photocatalytic ability to degrade textile dyes such as crystal violet, methylene blue and malachite green. They exhibited excellent catalytic activity in the degradation of organic dyes within 3 hours of exposure time in presence of sunlight. [ABSTRACT FROM AUTHOR]

[Display omitted] • Silver nanoparticles (Ag NPs) were obtained by plant-mediated synthesis. • Ag NPs were characterized by SEM, UV–vis, FTIR and XRD analyses. • Ag NPs have high antibacterial activity against gram-positive and gram-negative bacteria. • Ag NPs were observed to have the potential to be used as antimicrobial and antioxidant agents. Plant-mediated synthesis of silver nanoparticles (Ag NPs) has increased its use in various biomedical applications due to its cost-effectiveness, renewable and environmentally friendly properties. Therefore, the focus of the study was to synthesize Ag NPs and to evaluate their antibacterial, and antioxidant activities by using the aqueous root extract of Ferula pseudodalliacea plant as a reducing agent. In addition, the synthesis of nanoparticles was confirmed by performing Ag NPs/Fp characterization processes. According to the findings of our research, color change due to surface plasmon resonance was confirmed by UV–vis spectrometry. The crystal properties of Ag NPs/Fp were determined according to the XRD model. Phytochemicals responsible for coating and reduction of Ag NPs/Fp were observed by FT-IR analysis. It has been shown that the therapeutic effect of Ag NPs/Fp exhibits better antimicrobial and antioxidant activity than aqueous extract. In addition, it was determined that Ag NPs/Fp structures showed the best antifungal effect against Candida albicans ATTC 90028 pathogen and gave a better zone than Rifampicin antibiotic. Therefore, studies at the molecular level and more comprehensively are required to determine the bioactive components and pharmacological effects of Ferula pseudodalliacea plant to confirm our antibacterial, antioxidant, and antifungal activity results. [ABSTRACT FROM AUTHOR]