Comparison of beetroot extracts originating from several sites using time-resolved laser-induced fluorescence spectroscopy

Abstract

Beetroot (Beta vulgaris) juice contains a large number of fluorophores which can fluoresce. There is a growing interest in beetroot extracts analysis. In contrast, there is only limited information about beetroot obtained without sample preparation and/or extraction of components from the sample. In this work, we continue our previous study (Rabasović et al 2009 Acta Phys. Pol. A 116 570–2), analyzing and comparing beetroot extracts from several sites, using the time-resolved laser-induced fluorescence technique to measure the fluorescence of samples at different excitation wavelengths (340–470 nm) and for different sample dilutions.