[Use of computers for processing thin-layer chromatograms based on an example of red food dyes]

On an example of definition of the forbidden red dye amaranth E123 in a mix with other red food dyes (azorubin E122 and ponso 4R E124) the method of quantitative processing think level chromatograms was developed. The method includes transfer of chromatogram in a digital kind by scanning and processing of the received image with the help of the program Adobe Photoshop 5.0. The average values of detection of dyes on the developed method make for azorubin, amaranth and ponso 4R accordingly 95.6, 97.1 and 99.4% with correlation coefficients 0.98, 0.98 and 0.99.