Biosynthesis of silver nanoparticles using nanocurcumin extracted from fresh turmeric of Vietnam
Author:
Kim Anh Le Thi1, Dai Vuong Le2ORCID, Quoc Bao Vo-Van1, Phuong Nga Nguyen Thi3, Luan Le Van3
Affiliation:
1. College of Agriculture and Forestry , Hue University , Hue City , Thua Thien Hue Province , Vietnam 2. School of Engineering and Technology , Hue University , Hue City , Thua Thien Hue Province , Vietnam 3. Hue Industrial College , Hue City , Thua Thien Hue Province , Vietnam
Abstract
Abstract
This study presents a novel process to synthesize curcumin nanoparticles from fresh turmeric. An ultrasonic-assisted cajeput oil in water emulsion technique was used to synthesize nanocurcumin. The prepared nanocurcumin was spherical with an average size of 47 nm and size distribution of 5–80 nm. The synthesized nanocurcumin showed improved aqueous-phase solubility, and it was used as a reducing agent and stabilizer for biosynthesizing silver nanoparticles. Furthermore, the X-ray diffraction pattern of the silver nanoparticles showed four distinct diffraction peaks at 38.3°, 44.6°, 65.1°, and 78.1° corresponding to the lattice planes of face-centered cubic silver ((111), (200), (220), and (311)). Transmission electron microscopy analysis indicated the average size and maximum size distribution (80 %) of the silver nanoparticles were 10.9 nm and 5–15 nm, respectively. UV–visible spectroscopy measurement of samples indicated the localized surface plasmon resonance absorbance of an aqueous dispersion of silver nanoparticles at 406 nm. Zeta potential analysis revealed a negative charge with a magnitude of −27.2 mV, which indicated higher aqueous dispersion stability of the silver nanoparticles prepared from nanocurcumin. The nanoparticles showed antibacterial activity against Vibrio parahaemolyticus.
Publisher
Walter de Gruyter GmbH
Subject
Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics
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