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      Antioxidant, antibacterial and cytotoxic potential of silver nanoparticles synthesized using terpenes rich extract of Lantana camara L. leaves

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          Abstract

          Several attempts have been made for green synthesis of silver nanoparticles (AgNPs) using different plant extracts. Present study revealed that, antioxidant, antibacterial and cytotoxic AgNPs were synthesized using terpenes-rich extract (TRE) of environmentally notorious Lantana camara L. leaves. AgNPs were characterized by advanced techniques like UV–Visible and Infra red spectroscopy; XRD, SEM techniques as terpenes coated sphere shaped NPs with average diameter 425 nm. Further, on evaluation, AgNPs were found to exhibit dose – dependent antioxidant potential, good to moderate antibacterial activity against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa; and toxicity on Brine shrimp (A. salinanauplii) with LD 50 value 514.50 µg/ml.

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          Highlights

          • •

            Terpenes-rich extract (TRE) of Lantana camara L. leaves was prepared and evaluated.

          • •

            Silver nanoparticles (AgNP) were green synthesized using Terpenes-rich extract (TRE).

          • •

            Silver nanoparticles (AgNP) were shown to have antioxidant, antibacterial and cytotoxic potential.

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          Rapid biological synthesis of silver nanoparticles using plant leaf extracts.

          Jae Song, Beom Kim (2009)
          Five plant leaf extracts (Pine, Persimmon, Ginkgo, Magnolia and Platanus) were used and compared for their extracellular synthesis of metallic silver nanoparticles. Stable silver nanoparticles were formed by treating aqueous solution of AgNO(3) with the plant leaf extracts as reducing agent of Ag(+) to Ag(0). UV-visible spectroscopy was used to monitor the quantitative formation of silver nanoparticles. Magnolia leaf broth was the best reducing agent in terms of synthesis rate and conversion to silver nanoparticles. Only 11 min was required for more than 90% conversion at the reaction temperature of 95 degrees C using Magnolia leaf broth. The synthesized silver nanoparticles were characterized with inductively coupled plasma spectrometry (ICP), energy dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and particle analyzer. The average particle size ranged from 15 to 500 nm. The particle size could be controlled by changing the reaction temperature, leaf broth concentration and AgNO(3) concentration. This environmentally friendly method of biological silver nanoparticles production provides rates of synthesis faster or comparable to those of chemical methods and can potentially be used in various human contacting areas such as cosmetics, foods and medical applications.
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            Nanosilver-based antibacterial drugs and devices: mechanisms, methodological drawbacks, and guidelines.

            Pier Paolo Pompa, Loris Rizzello (2014)
            Despite the current advancement in drug discovery and pharmaceutical biotechnology, infection diseases induced by bacteria continue to be one of the greatest health problems worldwide, afflicting millions of people annually. Almost all microorganisms have, in fact, an intrinsic outstanding ability to flout many therapeutic interventions, thanks to their fast and easy-to-occur evolutionary genetic mechanisms. At the same time, big pharmaceutical companies are losing interest in new antibiotics development, shifting their capital investments in much more profitable research and development fields. New smart solutions are, thus, required to overcome such concerns, and should combine the feasibility of industrial production processes with cheapness and effectiveness. In this framework, nanotechnology-based solutions, and in particular silver nanoparticles (AgNPs), have recently emerged as promising candidates in the market as new antibacterial agents. AgNPs display, in fact, enhanced broad-range antibacterial/antiviral properties, and their synthesis procedures are quite cost effective. However, despite their increasing impact on the market, many relevant issues are still open. These include the molecular mechanisms governing the AgNPs-bacteria interactions, the physico-chemical parameters underlying their toxicity to prokaryotes, the lack of standardized methods and materials, and the uncertainty in the definition of general strategies to develop smart antibacterial drugs and devices based on nanosilver. In this review, we analyze the experimental data on the bactericidal effects of AgNPs, discussing the complex scenario and presenting the potential drawbacks and limitations in the techniques and methods employed. Moreover, after analyzing in depth the main mechanisms involved, we provide some general strategies/procedures to perform antibacterial tests of AgNPs, and propose some general guidelines for the design of antibacterial nanosystems and devices based on silver/nanosilver.
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              Bioreduction of chloroaurate ions by geranium leaves and its endophytic fungus yields gold nanoparticles of different shapes

              S Shankar, Absar Ahmad, Renu Pasricha … (2003)
              Article 0 comments Cited 181 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Patil Shriniwas P.
                Kumbhar Subhash T.
                Journal
                Journal ID (nlm-ta): Biochem Biophys Rep
                Journal ID (iso-abbrev): Biochem Biophys Rep
                Title: Biochemistry and Biophysics Reports
                Publisher: Elsevier
                ISSN (Electronic): 2405-5808
                Publication date PMC-release: 10 March 2017
                Publication date Collection: July 2017
                Publication date (Electronic): 10 March 2017
                Volume: 10
                Pages: 76-81
                Affiliations
                [a ]Department of Pharmacognosy, SCES’s Indira College of Pharmacy, Pune, India
                [b ]Department of Pharmacology, SCES’s Indira College of Pharmacy, Pune, India
                Author notes
                [* ]Corresponding author. patilsp111@ 123456gmail.com
                Article
                Publisher ID: S2405-5808(16)30253-9
                DOI: 10.1016/j.bbrep.2017.03.002
                PMC ID: 5637243
                PubMed ID: 29114571
                SO-VID: 6b28019f-e81e-4fd0-93f0-23179d220350
                Copyright © © 2017 The Authors
                License:

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

                History
                Date received : 29 October 2016
                Date accepted : 2 March 2017
                Categories
                Subject: Research Article

                Keywords: lantana camara l.,terpenes-rich extract,silver nanoparticles,antioxidant,antibacterial,brine shrimp cytotoxicity
                Data availability:
                Keywords: lantana camara l., terpenes-rich extract, silver nanoparticles, antioxidant, antibacterial, brine shrimp cytotoxicity

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