Garcinia mangostana Shell and Tradescantia spathacea Leaf Extract- Mediated One-pot Synthesis of Silver Nanoparticles with Effective Antifungal Properties

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Author(s): Ngoc Thuy Trang Le, Thai Thanh Hoang Thi*, Dai Hai Nguyen, Yern Chee Ching, Ngoc Hoi Nguyen, Dong Yen Pham Nguyen, Quynh Mong Truong

Journal Name: Current Nanoscience

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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.

Keywords: silver nanoparticle, antifungi, phytoconstituent, green chemistry, Garcinia mangostana, Tradescantia spathacea.

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(E-pub Ahead of Print)
DOI: 10.2174/1573413716666201222111244

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