In this work, a simple, rapid and sensitive analytical method for the determination of rhodamine B in
chili-containing foodstuffs is described. The dye is extracted from samples with methanol and analysed
without further cleanup procedure by high-performance liquid chromatography (HPLC) coupled to fluorescence
detection (FLD). The influence of matrix fluorescent compounds (capsaicin and dihydrocapsaicin)
on the analysis was overcome by the optimisation of mobile-phase composition. The limit of
determination (LOD) and limit of quantification (LOQ) were 3.7 and 10 lg/kg, respectively. Validation
data show a good repeatability and within-lab reproducibility with relative standard deviations