Journal
FOOD CHEMISTRY
Volume 204, Issue -, Pages 334-342Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2016.02.086
Keywords
Phenolic compounds; Magnetic carboxylated multi-walled carbon nanotubes; Liquid chromatography-tandem mass spectrometry; Sesame oil
Funding
- Project of National Science & Technology Pillar Plan [2012BAK08B03]
- Special Fund for Quality Inspection Research in the Public Interest [2012104010-4]
- National Major Project for Agro-product Quality & Safety Risk Assessment [GJFP2015006, GJFP201502-03]
- National Natural Science Foundation of China [21205118, 31201447]
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A novel magnetic carboxylated multi-walled carbon nanotubes (c-MWCNT-MNPs) was proposed for magnetic solid-phase extraction coupled with liquid chromatography-tandem mass spectrometry to determine phenolic compounds in sesame oil. In this study, c-MWCNT-MNPs were acquired by simply dispersing Fe3O4 magnetic nanoparticles into carboxylated multi-walled carbon nanotubes. The major parameters affecting extraction efficiency were optimized, including the type and volume of desorption solvents, extraction and desorption time, washing solution, and sorbent amount. The limit of quantifications and limit of detections were from 0.03 mu g/kg to 43.00 mu g/kg and from 0.01 mu g/kg to 13.60 mu g/kg, respectively. The recoveries of phenolic compounds in vegetable oils were in the range of 83.8-125.9% with inter-day and intra-day precisions of less than 13.2%. It was confirmed that this method was simple, rapid and reliable with an excellent potential for routine analysis of phenolic compounds in oil samples. (C) 2016 Elsevier Ltd. All rights reserved.
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