How will you detect the following in the context of adulteration:i

Question

How will you detect the following in the context of adulteration:

i) Artificial colour added to tea leaves.

ii) Silver foil replaced by aluminum foil

iii) Vanaspati added to Ghee

iv) Metanil yellow added to Turmeric powder

09 Jan 2025

Answer :

Word Count : 268

i) Artificial colour added to tea leaves:
To detect artificial colour in tea leaves, one can use the thin layer chromatography (TLC) method or spectrophotometric analysis. The tea can be dissolved in an appropriate solvent, and then the sample can be tested for specific dyes or artificial colourants using these techniques. In TLC, different colour compounds can be separated, and the artificial colour will show ___ ____ __________ ______ ______ ___ _____ ___ __________.
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