Title: Novel green synthesis of silver nanoparticles from newly discovered Putranjivaceae plant leaf extract and their antibacterial studies

Authors: Shareefraza J. Ukkund; Momin Ashraf; Abhinaya Nellerichale; Apoorva B. Udupa; Sapna Kannan; Vinaya B. Koradoor; P. Prasad; Krishanraja Acharya

Addresses: Department of Nano Technology, Srinivas Institute of Technology, Mangalore, India; Department of Nano-Biotechnology, Srinivas University, Mangalore, India ' Department of Physics, University of Strasbourg, Strasbourg, France ' Department of Nano Technology, Srinivas Institute of Technology, Mangalore, India ' Department of Nano Technology, Srinivas Institute of Technology, Mangalore, India ' Yenepoya Research Centre, Center for Systems Biology and Molecular Medicine (CSBMM), Yenepoya University, Mangalore, India ' Department of Electrical and Electronics Engineering, Srinivas Institute of Technology, Mangalore, India ' Department of Nano Technology, Srinivas Institute of Technology, Mangalore, India; Department of Nano-Biotechnology, Srinivas University, Mangalore, India ' Department of Nano Technology, Srinivas Institute of Technology, Mangalore, India

Abstract: Silver nanoparticles (AgNPs) have been synthesised by many plant extracts so far. In this novel study we have synthesised AgNPs from Putranjivaceae leaf extract. The new plant Putranjivaceae was discovered in 2017 (Krishna et al., 2017) in West Bengal, India. The AgNO₃ is treated with the leaf extract and subjected to microwave irradiation to get AgNPs. The nanoparticles were synthesised in just 10 minutes and subjected to characterisation for structural and morphological studies. The synthesis was rapid and shape of nanoparticles found uniform in nature by SEM and TEM analysis observed to of 20-25nm. The primary confirmation of AgNPs was done by UV-visible-spectrophotometer and EDAX. The synthesised silver nanoparticles were optimised by several parameters like pH, salinity and substrate concentration to observe the maximum production. The silver nanoparticles were then conjugated with several antibiotics for antibacterial studies out of which erythromycin showed three fold increments in its efficiency.

Keywords: Drypetes species; Putranjivaceae leaf extracts; silver nanoparticles; antibacterial studies; UV-visible spectrophotometer.

DOI: 10.1504/IJNM.2020.110382

International Journal of Nanomanufacturing, 2020 Vol.16 No.4, pp.299 - 311

Received: 27 Jun 2018
Accepted: 03 Jan 2019
Published online: 19 Oct 2020 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article