Journal
APPLIED NANOSCIENCE
Volume 8, Issue 6, Pages 1353-1360Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13204-018-0810-0
Keywords
ZnO nanoparticles; Green synthesis; Costus igneus; Solvent extraction; In vitro
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Funding
- Department of Science and Technology (DST), New Delhi
- German Academic Exchange Service (DAAD), Germany [INT/FRG/DAAD/P-13/2017]
- University Grants Commission (UGC), New Delhi [F.15-1/2015-17/PDFWM-2015-17-TAM-36274]
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The present study is intended to produce high-purity zinc oxide nanoparticles from the leaves of Costus igneus and zinc acetate precursor via sustainable methods by the tribulation with three different solvents (hot water, methanol, and acetone) for the extraction of plant compounds. While examining the physico-chemical characteristics of ZnO nanoparticles incurred by the catalysis of plant bioactive compounds extracted from different solvents, the hot water extract-based green synthesis process yields higher purity (99.89%) and smaller particle size (94 nm) than other solvents. The optimization of the solvents used for the green synthesis of nanoparticles renders key identification in appropriate extraction of bioactive compounds suitable for the nucleation/production of nanoparticles in addition to annealing temperature. The impregnable usage of ZnO nanoparticles in clinical applications is further confirmed based on the treatment of particles (1-10 mg ml(-1)) against Grampositive (S. aureus and S. epidermis) and Gram-negative bacteria (E. coli and K. pneumoniae) with respect to their growth inhibition. An in-force growth inhibition against particular S. aureus and S. epidermis imparted by the low concentration of ZnO nanoparticles signifies the utilization and consumption of green-synthesized high-purity nanoparticles for therapeutic and cosmetic applications.
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