Eco-friendly biosynthesis of silver nanoparticles using Aloysia citrodora leaf extract and evaluations of their bioactivities. (December 2022)

• Record Type: Journal Article
• Authors: Hassanisaadi, Mohadeseh; Bonjar, Amir Hashem Shahidi; Rahdar, Abbas; Varma, Rajender S.; Ajalli, Narges; Pandey, Sadanand
• Is Part Of: Materials today communications. Volume 33(2022)
• Publication Date: 2022-12
• Subjects: NPs Nanoparticles -- AgNPs Silver nanoparticles -- MNPs Metal nanoparticles -- PMMA Polymethyl methacrylate -- TEM Transmission electron microscopy -- FESEM Field emission scanning electron microscopy -- DLS Dynamic light scattering -- PDI polydispersity index -- EDS Energy-dispersive X-ray analysis -- ISCB In vitro surface coating-bioassay -- MIC Minimum inhibitory concentration -- CGD Colony growth diameter -- IZ Inhibition zone -- IR Inhibition rate; Aloysia citrodora -- Antifungal -- Biomedical -- Eco-friendly -- Green synthesis -- Silver nanoparticles; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2022.104183
• Languages: English
• ISSNs: 2352-4928

Abstract

Abstract: In view of their ease of synthesis, stability, functionalization, and low toxicity, biological processes are the excellent choice for the biosynthesis of nanoparticles (NPs). There is potential for NPs in alleviating plant diseases where these nano-sized materials are an ecological alternative to traditional chemical pesticides. Herein, silver nanoparticles (AgNPs) were biosynthesized using the aqueous leaf extract of Aloysia citrodora and were characterized using UV/Vis spectroscopy, transmission electron microscopy (TEM), field emission electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), dynamic light scattering (DLS), and X-ray diffraction (XRD). The phytochemicals involved in metal ion bioreduction are being identified through Fourier transformation infrared (FTIR). The ensued AgNPs were evaluated for anti-oomycete and antifungal activity against Pythium aphanidermatum, Paecillomyces formosus, Fusarium oxysporum f.sp. cumini, Macrophumina phaseolina, and Botrytis cinerea, wherein they exhibited strong inhibition of the mycelial growth. These findings demonstrated that green AgNPs have the potential to protect plants against phytopathogens under field conditions. Graphical Abstract: Biosynthesis process of biogenic AgNPs using Aloysia citrodora and their anti-pathogenic activity ga1 Highlights: Biosynthesis of AgNPs using Aloysia citrodora aqueous leaf. Instrumental techniques confirmed the biosynthesis of AgNPs. In vitro surface coating bioassay used to measure MIC of biogenic AgNPs. Biogenic AgNPs showed a significant antifungal and anti- Pythium activity.