Applications
The proposed procedure has been applied to determine of carmine
in different food matrixes. Since this additive is not used in
the food industry of Iran, spike method was used to demonstrate
the practical application of the proposed method. The results are
given in Table 2. According to these results from Table 2, the spiked
concentration of carmine can be quantitatively recovered from the
food samples by the proposed procedure. These results demonstrate
the applicability of the proposed method for measurement
of carmine in smarties and several soft drinks.
The analytical parameters of the proposed method were compared
with several reported methods in the literatures (Table 3).
The results show the LOD, LOQ and recovery values were improved
by using the proposed CPE method. In the other hand, analysis time
for this method was shorter than other methods especially chromatographic
methods. In this method, no organic solvent was
used. The proposed method can be successfully used to extract
and quantify carmine in food samples.