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Published in: Journal of Nanoparticle Research 1/2015

01-01-2015 | Research Paper

Evaluation of magnetic- and carbon-based nano-adsorbents application in pre-purification of paclitaxel from needles of Taxus baccata

Authors: M. R. Naghavi, E. Motamedi, J. Nasiri, H. Alizadeh, M. R. Fattahi Moghadam, A. Mashouf

Published in: Journal of Nanoparticle Research | Issue 1/2015

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Abstract

In this investigation, the proficiency of a number of magnetic carbon-based nano-adsorbents is evaluated in pre-purification process of the crude paclitaxel extract obtained from fresh needles of yew tree (Taxus baccata L.). The effectiveness and removal ability of color and impurities from crude extracts, for three novel candidate nano-adsorbents (i.e., Fe3O4 nanoparticles (Fe3O4Nps), graphite oxide (GO), and their hybrids Fe3O4Nps/GO) are compared with commercial graphite in three different solvents. In general, both HPLC and UV–Vis spectroscopy results demonstrate that in less polar solvent (i.e., dichloromethane), the adsorption is greatly affected by the electrostatic attractions, while in more polar solvents (i.e., acetone and ethanol) π–π electron interactions taking place between adsorbent and adsorbate are the most dominant factors in sorption. Considering decolorization efficiency, purity of taxol, recovery and reusability of adsorbents, Fe3O4Nps/GO (50 g/L) in dichloromethane is selected as the best medium for pre-purification of paclitaxel. Additionally, in kinetic studies the sorption equilibrium can be reached within 120 min, and the experimental data are well fitted by the pseudo-second-order model. The Langmuir sorption isotherm model correlates well with the sorption equilibrium data for the crude extract concentration (500–2,000 mg/L). Our findings display promising applications of Fe3O4Nps/GO, as a cost-effective nano-adsorbent, to provide a suitable vehicle toward improvement of paclitaxel pre-purification.

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Appendix
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Metadata
Title
Evaluation of magnetic- and carbon-based nano-adsorbents application in pre-purification of paclitaxel from needles of Taxus baccata
Authors
M. R. Naghavi
E. Motamedi
J. Nasiri
H. Alizadeh
M. R. Fattahi Moghadam
A. Mashouf
Publication date
01-01-2015
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 1/2015
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-014-2830-3

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