Green Synthesis of Metal Nanoparticles using Ocimum sanctum (Tulsi)

Author(s): Subrat Kumar Panigrahi, Anadi Singhamahapatra, Mrutyunjay Jena and Satyanarayan Sahoo

Abstract: In recent literature, the area of metal nanoparticles has found considerable attraction due to the versatile role of such nanoparticles in biomedical science, catalysis, antimicrobial study, cosmetics, energy production, pollution control and information storage. The effective use of these metal nanoparticles as material and medicine depend on their shape, size and functional groups surrounding them. The conventional methods used for synthesis of metal nanoparticles are not environment friendly. Green synthesis of metal nanoparticles, being eco-friendly, bio-compatible and less toxic, is an alternative approach in this regard. Ocimum sanctum or ‘tulsi’ is known to be the most sacred aromatic plant found in India. According to Indian traditional medicine such as Ayurveda, Unani and Siddha, almost all the parts of tulsi tree are known to have some therapeutic property. The extracts from different parts of the plant, specifically from the leaf, have been reported for synthesis of different metal nanoparticles including silver, gold, copper, palladium, iron etc. These nanoparticles are potentially applicable in the area of medicine, material science and catalysis. The present review provides a brief account of the synthesis, spectrochemical analysis and potential applications of these nanoparticles.

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