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Del Giovine, L.; Piccioli Bocca, A.
Food control, 04/2003, Letnik: 14, Številka: 3Journal Article
A capillary electrophoresis method was developed to analyse same food dyes in ice-cream. Sunset yellow (E110), carmoisine (E122), Ponceau 4 R (E124), are permitted in ice-cream by directive 95/45/ce of Commission 26-7-95, but their maximum amount (50 μg/kg) is lower of the limit for the other permitted (150 μg/kg). In this paper we propose a separation on a capillary column ( 50 cm×70 μ m I.D.) with photodiode array detection: each peak is identified from absorbance spectra and then quantified by external standard. The electrophoresis buffer used was a mixture of 25 mM sodium phosphate and 25 mM sodium borate (1:1) pH 8. The three dyes are separated in a short time, <6 min the standard deviations of the migration times of the peaks range between 0.3% and 0.7%. The limit of detection with a 3:1 signal-to-noise ratio was 5 μg/kg. This capillary zone electrophoresis procedure resulted rapid and sensitive.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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