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Development and validation of a rapid HPLC method for the determination of five banned fat-soluble colorants in spices using a narrow-bore monolithic column

Constantinos K CK Zacharis, Fotini S FS Kika, Paraskevas D PD Tzanavaras, Pantelis P Rigas, and Efstratios R ER Kyranas

Talanta 84(2):7 (2011) PMID 21376976

This work reports a fast and simple liquid chromatographic method for the simultaneous determination of five banned fat-soluble synthetic colorants, namely Sudan I-IV and Para-Red, in spice samples. The analytes were successfully separated isocratically in less than 5min on the new narrow bore monolithic column, FastGradient^(R) Chromolith (50mmx2.0mm i.d.) using a mobile phase of 0.1% (v/v) HCOOH/acetonitrile (35/65%, v/v) at a flow rate of 1.5mLmin^-^1. All colorants were detected at 506nm. The main parameters (mobile phase composition, flow rate, injection volume) affecting the separation were studied. The proposed method was thoroughly validated in terms of linearity, LODs, precision and accuracy. The method was applied to the determination of the studied azo-dyes in various spices (paprika, chilli and mixed spice powders) after ultrasound-assisted extraction. Satisfactory recoveries, ranging from 92% to 109% were obtained.

DOI: 10.1016/j.talanta.2011.01.043
Version: za2963e q8zab q8zba q8zc3 q8zdc q8ze3 q8zfc q8zgc

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