Journal
FOOD CHEMISTRY
Volume 277, Issue -, Pages 586-594Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.10.107
Keywords
Food additives; Salting out liquid-liquid extraction; RP-UPLC; Accuracy profile; Juices
Funding
- Gobierno de Aragon
- Fondo Social Europeo [T53_17R]
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A novel and fast salting out liquid-liquid extraction method was developed for simultaneous determination of food additives with different polarities in juices. Chromatographic separation was achieved in less than 6 min using Acquity UPLC BEH C 18 (100 mm x 2.1 mm d.i. x 1.7 mu m) column with ammonium acetate with 0.01% of trifluoroacetic acid as eluent A and acetonitrile as eluent B at a flow rate of 0.2 mL min(-1). The main factors affecting the extraction efficiency were optimized. The method was validated applying accuracy profile based on total error. The extraction recoveries ranged from 84.97 to 122%. Relative standard deviation ranged from 1.24 to 7.99% for intraday assay and from 1.69 to 9.16% for intermediate precision. The limits of detection for five food additives were from 0.3 to 1.42 mu g mL(-1). The method was successfully applied to 47 samples of juices from nine brands.
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