Antibacterial Activities of Phytofabricated ZnO and CuO NPs by Mentha pulegium Leaf/flower Mixture Extract against Antibiotic Resistant Bacteria

Abstract

Purpose: In this study, leaf/flower aqueous extract of medicinal plant species Mentha pulegium was used to synthesize ZnO and CuO nanoparticles (NPs) as a cost-effective, one-step, and eco-friendly method. Methods: Physicochemical properties of both metal oxide NPs (MONPs) were determined by UV-Vis spectroscopy, X-Ray Diffraction (XRD), Fourier-Transform Infra-Red (FTIR) spectroscopy, Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX) techniques. Results: Phytofabricated ZnONPs and CuNPs illustrated 65.02±7.55 and 26.92±4.7 nm with antibacterial activities against antibiotic-resistant Escherichia coli and Staphylococcus aureus. Higher antibacterial activities were observed for CuONPs compared with ZnONPs. Conclusion: Large surface area and more reactivity resulted from smaller size as well as higher production of reactive oxygen species (ROS) were considered to antibacterial efficiency of CuONPs against antibiotic-resistant E. coli and S. aureus.

Liquid–liquid phase reaction between crystal violet and sodium hydroxide: kinetic study and precipitate analysis

“…For instance, the intensity of the approximately 1576 cm −1 peak in the CV spectrum decreased after the reaction, and the peak shifted to approximately 1564 cm −1 . Upon closer inspection, the precipitate spectra were found to contain a weak peak at approximately 1124 cm −1 corresponding to C-O stretching in the tertiary alcohol, which is not present in the CV structure [ 24 ]. Compared with the spectrum of SV9, the spectra of the precipitates clearly show that the peak positions and intensities are well matched.…”

Investigation of the chemical properties of Mentha pulegium essential oil and its application in Ocimum basilicum seed mucilage edible coating for extending the quality and shelf life of veal stored in refrigerator (4°C)

“…The FTIR results demonstrated that the band in the wavenumber range of 3400–3000 cm −1 was associated with the stretching vibrations of the O–H groups of water molecules, as well as those of the phenolic and alcoholic compounds of the essential oil like menthol (Alavi et al., 2021 ). The peak at 2968.83 cm −1 was ascribed to the asymmetric stretch of C–H and CH 3 groups (Petrakis et al., 2009 ).…”

Evaluation of antibiotic resistance and prevalence of multi-antibiotic resistant genes among Acinetobacter baumannii strains isolated from patients admitted to al-yarmouk hospital

“…Antimicrobial resistance often occurs as a result of the treatment of infectious diseases by misuse of antibiotics and is a global problem that affects the environment, human and animal health, as well as agriculture and the economy [5,6]. Bacterial resistance to antibiotics can be either innate or acquired [7]. Meanwhile, antibiotic resistance has become a global problem among the clinical strains of Acinetobacter, Klebsiella, Pseudomonas aeruginosa, Proteus, Escherichia coli, and Enterobacter species, and becomes a concern when this resistance can be transmitted through motile genetic elements (MGE) [8].…”