4th Edition of World Nanotechnology Conference

April 19-21, 2021 | Virtual Event

April 25 -27, 2022 | Las Vegas, United States
2020 Speakers

Raymond Jagessar

Speaker at World Nanotechnology Conference 2020 - Raymond Jagessar
University of Guyana, Guyana
Title : Plant extracts based nanoparticles, potential nanomedicine in fight against COVID-19


There is no declared vaccine or specific medication/medications to date, to fight COVID-19, even though the first vaccine is expected to be out before December, 2020. However, plant based nanoparticles, may be one of the medical route that scientists can pursue to eradicate this planet threatening virus. The SARS-COV-2 virus consists of a structure of a similar  cale as plant based nanoparticles. Its anticipated that the proposed plant based nanoparticles can attach to SARS COV-2 viruses, disrupting their structure and so kill the virus. Plant based nanoparticles are expected to disable the viruses, even before they break into the body.

Nanotechnology is the design, characterization, production/synthesis and application of structures, devices and systems by controlling the shape and size at the nanometer scale. Nanoparticles are usually synthesized by chemical methods that usually used toxic reactants/reagents as reducing agents that further produce toxic by-products, which in turn are hazardous to the environment. However, recently, there has been the used of plant extracts as an alternative, complementary source of reducing agents to reduce metal ions to the corresponding metal nanoparticles. Plants contain an abundance and diverse arrays of natural products such as alkaloids, flavonoids, saponins, steroids, tannins, coenzymes etc. that vary in concentration and type in different parts of the plants such as leaves, stems, roots, shoots, flowers, barks, fruits and seeds. These secondary metabolites can act as reducing and stabilizing agents for the bioreduction reaction to synthesize novel metallic nanoparticles. Plant based nanoparticles are less expensive to synthesise, ecofriendly and are thus less hazardous to the environment. This presentation on Green nanotechnology, surveys the use of plant extracts as possible green reagents for the synthesis of green nanoparticles to combat SARS-COV-2 virus Keywords: Nanotechnology, nanoparticles, plant based nanoparticles, natural products, environmental friendly, medicinal, Covid-19, SARS-COV-2


Raymond C. Jagessar obtained his BSc (Distinction) in Chemistry/Biology from the University of Guyana (1992) and his PhD from the UK (1995). He held three Post Doctoral Research Fellowships at the University of South Carolina (USA), Wichita State University (USA) and the University of the West Indies (1996-1999). He has also won several international awards, amongst them are Chartered Chemist, CChem and Fellow of the Royal Society of Chemistry, FRSC, UK. His research interests are broad, covering the spectrum of Pure and Applied Chemistry, Chemical Biology, Pharmaceutical and Medicinal Chemistry. He has published over seventy (70) research articles, five book chapters and presented at several international conferences. He is currently Professor in Chemistry at the University of Guyana (South America)