Background: The feasibility of plant extracts for metallic nanoparticle fabrication has been demonstrated. Each
plant species impacts differently on formed nanoparticles, thus specific plants need to be explored in detail.
Objective: Continuing the fabrication of nanoparticles using green method, Garcinia mangostana shell and Tradescantia
spathacea leaf extract are exploited as reducing sources to form two types of silver nanoparticles (GMS-AgNPs and TSLAgNPs) less than 50 nm.
Methods: Structural characterization of GMS-AgNPs and TSL-AgNPs was performed by ultraviolet-visible
spectrophotometry (UV-vis), Fourier transform infrared spectroscopy (FTIR), X-ray energy dispersive spectrometer
(EDAX), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Antifungal tests of GMSAgNPs and TSL-AgNPs were performed with Aspergillus niger, Aspergillus flavus, and Fusarium oxysporum.
Results: UV-vis spectra with the 440-nm peak demonstrate the silver nanoparticle formation. FTIR analysis shows the
GMS-AgNPs and TSL-AgNPs modified by organic functional groups. The SEM and TEM images indicate that the GMSAgNPs are spherical shape with rough edge, while the TSL-AgNPs are spherical shape with smooth surface. The GMSAgNP average size (15.8 nm) is smaller than TSL-AgNP (22.4 nm). In addition, antifungal tests using Aspergillus niger,
Aspergillus flavus, and Fusarium oxysporum reveal that GMS-AgNPs and TSL-AgNPs can inhibit significantly the
proliferation of these fungal strains.
Conclusion: Garcinia mangostana shell and Tradescantia spathacea leaf extract as renewable and eco-friendly resources
playing a dual role for nanoparticle biosynthesis create GMS-AgNPs and TSL-AgNPs with high antifungal efficiency for
biomedical or agricultural applications.