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The frequent use of dried chilli powder in dacoity and murder cases is routine and quite common practice in criminology. The main active ingredient is “Capsaicin” a flavonoid which is highly pungent and causes lachrymatory effects. The next most important ingredient is “Capsanthin” a carotenoid which imparts colour to chilly (Capsicum). Capsicum is normally classified by its extractable colour and this important factor determines the quality of the final product. The extractable colour was determined by American Spice Trade Association (ASTA) which refers to the international standard for measuring the extractable colour by Spectrophotometry. Our study was carried out in three stages. Stage 1 involves the utility of various solvents namely methanol, acetone, hexane, chloroform and ethyl acetate and the contribution of these solvents for efficient pigment extraction was examined thoroughly and comparatively. Stage 2 involves the utility of ASTA method for the measurement of total extractable colour of Capsicum powder by UV-Vis Spectrophotometer. Stage 3 involves the identification of any added commercially available dyes by Thin Layer Chromatography and Spectrometry. Technical Application: The uniqueness of total extractable carotenoids property is made use of in this study and helps in connecting the crime with the criminal in murder and dacoit cases and also in trade mark violation cases of comparing questioned and standard brand samples and to find out the presence of adulterants such as commercially available dyes.
A Visalakshi, G Jeyanthi/Evaluation of Total Carotenoids in Chilly: A Guide to Forensic Examination of Chilly Powder by Spectrophotometry/J Forensic Chemistry Toxicol. 2022;8(1): 21–27.
This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.
| Received | Accepted | Published |
|---|---|---|
| December 16, 2021 | April 26, 2022 | June 25, 2022 |
Saturday 17 October 2026, 09:42:47 (IST)
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| Received | December 16, 2021 |
| Accepted | April 26, 2022 |
| Published | June 25, 2022 |
This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.