Journal
FOOD CHEMISTRY
Volume 145, Issue -, Pages 687-693Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2013.08.114
Keywords
Multi-walled carbon nanotubes; Solid-phase extraction; Molecularly imprinted polymers; Emodin; Kiwi fruit root
Funding
- National Natural Science Foundation of China [21005030]
- Research Foundation of Education Bureau of Hunan Province, China [10A099]
- Twelfth Five-year-plan National Technology Support Program, China [2011BAD10B01]
- Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
- Graduate Innovation Foundation of Jishou University [JGY 201111]
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In this paper, we present a novel surface imprinting technique for the preparation of molecularly imprinted polymers/multi-walled carbon nanotubes (MIPs/MWNTs) for extraction of emodin from kiwi fruit root. The MIPs/MWNTs were characterised by scanning electron microscopy (SEM) and Fourier transform-infrared spectroscopy (FT-IR). The properties involving adsorption dynamics, static adsorption, and selective recognition capacity were evaluated. The MIPs/MWNTs exhibited good site accessibility in which it only took 60 min to achieve adsorption equilibrium and highly selective recognition for the template emodin. Furthermore, the performance of the MIPs/MWNTs as solid phase extraction (SPE) material was investigated in detail. The proposed MIPs/MWNTs-SPE procedure for emodin exhibited satisfactory recoveries ranging from 89.2% to 93.8% for real samples. It was used for the purification and enrichment of emodin from kiwi fruit root successfully. (C) 2013 Elsevier Ltd. All rights reserved.
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