title: RETRACTED: Facile, eco-friendly and template free photosynthesis of cauliflower like ZnO nanoparticles using leaf extract of Tamarindus indica (L.) and its biological evolution of antibacterial and antifungal activities.
abstract: In the present investigation, we chose the very simple and eco-friendly chemical method for synthesis of zinc oxide nanoparticles from leaf extract of Tamarindus indica (L.) (T. indica) and developed the new green route for synthesis of nanoparticles. Formed product has been studied by UV-vis absorption spectroscopy, Photoluminescence (PL) spectroscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Field emission scanning electron microscopy (FE-SEM) and with corresponding energy dispersive X-ray analysis (EDX). Mainly, the present results depicted that the synthesized nanoproducts are moderately stable, hexagonal phase, roughly spherical with maximum particles in size range within 19-37 nm in diameter. The antibacterial and fungal activities of aqueous extracts of T. indica were ended with corresponding disk diffusion and Minimum Inhibitory Concentration (MIC). The highest mean zones of inhibition were observed in the ZnO NPs (200 μg/mL) against Staphylococcus aureus (13.1±0.28). Finally, it can be concluded that microbial activity of ZnO NPs has more susceptible S. aureus than the other micro organisms. Further, the present investigation suggests that ZnO NPs has the potential applications for various medical and industrial fields.
authors.affiliation: Department of Physics, Annamalai University, Annamalai Nagar 608 002, India.
authors.forename: K
authors.initials: K
authors.lastname: Elumalai
authors.affiliation: Department of Engineering Physics (FEAT), Annamalai University, Annamalai Nagar 608 002, India. Electronic address: drvelmurganphy@gmail.com.
authors.forename: S
authors.initials: S
authors.lastname: Velmurugan
authors.affiliation: Department of Engineering Physics (FEAT), Annamalai University, Annamalai Nagar 608 002, India.
authors.forename: S
authors.initials: S
authors.lastname: Ravi
authors.affiliation: Department of Physics, Annamalai University, Annamalai Nagar 608 002, India.
authors.forename: V
authors.initials: V
authors.lastname: Kathiravan
authors.affiliation: Department of Physics, Annamalai University, Annamalai Nagar 608 002, India.
authors.forename: S
authors.initials: S
authors.lastname: Ashokkumar
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D000935:Antifungal Agents / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects; D005658:Fungi / Q000187:drug effects; D055772:Green Chemistry Technology / Q000379:methods*; D006801:Humans; D008826:Microbial Sensitivity Tests; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D010788:Photosynthesis; D010936:Plant Extracts; D018515:Plant Leaves / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared; D029861:Tamarindus / Q000737:chemistry*; D013696:Temperature; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D010936:Plant Extracts; D015034:Zinc Oxide
keywords: FE-SEM; Tamarindus indica (L.); XRD; ZnO NPs