The number of studies on this issue over the past few years
gives testimony to the importance of this problem and highlights
the need for developing fast, accurate and selective techniques
for synthetic dye analysis [9]. Up to now several methods for the
determination of carmine and carminic acid in food samples have
been proposed. These methods are including differential pulse
polarography (DPP) [10], stripping voltammetry (SV) [11],
high-performance liquid chromatography (HPLC) [12,13] and
spectrophotometric method [14]. Some of these methods, e.g.
chromatography and polarography are not considered as green
analytical methods due to the use of hazardous organic solvents
in chromatography and dropping mercury in polarography. On
the other hand, HPLC and capillary electrophoresis (CE) methods
are construed as more efficient alternative methods. However, they
are expensive, time-consuming and produce waste with a high
percentage of organic solvents. Despite the high sensitivity of electroanalytical
methods, they suffer from low selectivity. The disadvantages
of stripping voltammetry (SV) are including longer
analysis time than spectroscopic methods, and also interferences
which can lead to limitations.