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Artikel: γ-Fe2O3 magnetic nanoparticle functionalized withcarboxylatedmultiwalledcarbon nanotube for magnetic solid phase extractions and determinations of Sudan dyes and Para Red in food samples

Kılınç, Ersin / Kadir Serdar Çelik / Havin Bilgetekin

Food chemistry. 2017,

2017  

Abstract: Hybrid nanostructures composed of γ-Fe2O3 (maghemite) and carboxylated-multi walled carbon nanotube (cMWCNT) were used for the magnetic solid phase extractions and determination of Sudan I, II, III, IV, Para Red, Sudan Black B and Sudan Red 7B in chili ... ...

Abstract Hybrid nanostructures composed of γ-Fe2O3 (maghemite) and carboxylated-multi walled carbon nanotube (cMWCNT) were used for the magnetic solid phase extractions and determination of Sudan I, II, III, IV, Para Red, Sudan Black B and Sudan Red 7B in chili products. High performance liquid chromatography (HPLC) was employed for the measurements. Limit of quantification (LOQ) values were found in the range 0.44-2.82 ng mL-1 for analytes. The best extraction parameters were determined as pH 8.0, 40 mg of magnetic nanoparticle, 4.0 min of contact time, 0.3 mL desorption by acetonitrile. The samples were dissolved in acetone-dichlorometane-methanol (3:2:1, v/v/v) and diluted with acetonitrile-methanol (v/v; 80:20) before the method was applied. Concentrations of Sudan dyes and Para Red were determined in four samples of chili powder from less than LOQ to 31.21±1.6 ng g-1, two samples of chili tomato sauces (lower than LOQ) and two samples of ketchup (lower than LOQ).
Schlagwörter Sudan dyes ; acetonitrile ; carbon nanotubes ; desorption ; high performance liquid chromatography ; ketchup ; maghemite ; magnetism ; nanoparticles ; pH ; tomato sauce
Sprache Englisch
Umfang p. .
Erscheinungsort Elsevier Ltd
Dokumenttyp Artikel
Anmerkung Pre-press version
ZDB-ID 243123-3
ISSN 1873-7072 ; 0308-8146
ISSN (online) 1873-7072
ISSN 0308-8146
DOI 10.1016/j.foodchem.2017.09.039
Signatur
Z 3634: Hefte anzeigen
Datenquelle NAL Katalog (AGRICOLA)

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