The Ability of Ginger Rhizome (Zingiber officinale Rosc) Extract in Producing of Silver Nanoparticles and the Antibacterial activity of these nanoparticles
Authors: Thi Phuong Ho , Thi Le Na Nguyen , Trung Thanh Nguyen , Dinh Thang Nguyen 
Published: September 2019

Recently, using plant extract as a reducing agent for nanosilver particle synthesis hasbeen focused. This is a green technology utilizing the ready material in the nature to create thenanoparticles with good properties and uniqe quality. In this study, ginger rhizome extract wasused to reduce the silver cation (Ag + ) to silver (Ag o ) as nanoparticles with uniqe quality and evendistribution in the solution. The size of the particles varied in the range of 20-40 nm. Reactionconditions were investigated and optimized with AgNO 3 concentration of 3mM, extractsolution/AgNO 3 solution of 1/5, temperature of 80˚C, pH of 12 and reaction time of 30 min. Theresults obtained from the antibacterial assays showed that silver nanoparticle solution hadantibacterial ability with an average effective diameter of 10 mm. It also indicated that theantibacterial activity of silver nanoparticle solution on the Gram (-) bacterium (E. coli) is betterthat on Gram (+) bacterium (S. aureus). In conclusion, we suggest that the ginger rhizome extractcan be used to produce silver nanoparticles in mild reaction conditions; the silver nanoparticlesolution expressed as a quite good antibacterial agent and therefore could be applied in decreasingthe effects of deleterious bacteria.Keywords
Silver nanoparticle, plant extract, antibacterial, Zingiber officinale Rosc.
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