Evaluation of antimicrobial properties of a novel synthesized nanometric delafossite

Abstract

Antibiotics and other antimicrobial compounds are the backbone of clinical medicine. Antimicrobial resistance can cause serious diseases to man. Nanotechnology can improve therapeutic potential of medicinal molecules and related agents. Widespread application of antibiotics and other antimicrobial compounds led to development of multidrug-resistant microbes, so there is need to develop novel therapeutic agents. Novel synthesized nanometric delafossite was assayed against two Gram-positive bacteria (Staphylococcus aureus and Micrococcus luteus), two Gram-negative bacteria (Escherichia coli and Klebsiella pneumoniae), four opportunistic fungi (Aspergillus flavus, A. fumigatus, A. niger, and Fusarium solani), and four Candida species (C. albicans, C. parapsilosis, C. krusei, and C. tropicalis) using diffusion assay method. The minimum inhibitory concentration (MIC) of the novel synthesized nanometric delafossite was determined using the dilution method. The assayed compounds showed different degrees of antifungal and antibacterial activities, depending on the annealing temperature of preparation of these compounds. Compounds prepared at room temperature showed greater antimicrobial activities than those prepared at higher temperatures. The antimicrobial activity depends also on the susceptibility of the test microbe.

Influence of Elastic and Optical Properties on AgFeO2 and AgCrO2 Delafossite to be Applied in High-Frequency Applications

“…Recently, ABO 2 delafossite-oxides [A is monovalent = silver (Ag), B is trivalent = chromium (Cr) or iron (Fe)] have been paid great attention due to several potential applications, such as water purification, conductors, antimicrobials, chemical sensors, and solar cells. [1][2][3][4][5][6][7][8][9][10][11] Moreover, it is known that silver (Ag) nanoparticles has high resistance against oxidation and high thermal and electrical conductivity that can be used in a wide range of useful applications. [12][13][14][15][16][17][18][19][20] In this work, the study of elastic properties and high-frequency applications is discussed for the first time for AgCrO 2 and AgFeO 2 delafossite; there is no previous literature on this subject.…”

Attractive study of the physical properties of silver iron oxide nanoparticles for biomedical applications

“…Understanding the device's working frequency is necessary for verifying its effectiveness. To get the operating frequency (ω), we used the following relationship [35,36] [37][38][39][40]. It is reported that silver nanoparticles without any substituted magnetic materials showed high antibacterial and antifungal behavior [24].…”

Study of the Structural and Magnetic Properties of a Novel Cola/Lah Nanocomposite Material

“…50 Therefore, introducing strong antibacterial substances did not affect the microorganisms. [51][52][53] CONCLUSION Lanthanum perovskite-hematite (LaFeO 3 -Fe 2 O 3 ) (LaH) nanoparticles and a cobalt lanthanum nanofer- rite/lanthanum perovskite-hematite (0.3CoLa 0.02-Fe 1.98 O 4 /0.7LaFeO 3 -Fe 2 O 3 ) (CoLa/LaH) nanocomposite were prepared using a rapid method (flash). The XRD and AFM investigations of structure and morphology revealed that the materials have nanoscale sizes.…”