Unusual Finding of Tartazine Carmoisine and Brilliant Blue Dyes In Suspected Duplicate Foreign Liquor samples by HPTLC

-Forensic science laboratories in Maharashtra state regularly receiving number of duplicate foreign liquor samples under section 420 of IPC Act. The study was under taken to confirm these samples as per specifications of the manufacturer. It was found that illegal syndicates adjusted the percentage of alcohol up to standard specific value and used substandard coloring, flavoring and essential oils in brand liquors. The HPTLC (high performance thin layer chromatography) and ultra violet visible (UV-visible) spectrophotometer was successfully used to solve such cases by identification and separation of these coloring materials. The chloroform: methanol and triethylamine (8.0:1.8:0.2) as a moving phase gave good separation of dissolved dyes in liquors. This approach is the simplest tool for identification of adulterated liquor samples. Keywords-Tartazine, Carmoisine, Brilliant Blue, HPTLC, Duplicate liquor, Forensic.