Metanil yellow, a non-permitted dye, is often used to adulterate turmeric. Which chemical test can confirm its presence?

Correct option is B

The correct answer is: (b) Alcohol and hydrochloric acid test yielding pink color
Explanation:
· Metanil yellow is a non-permitted azo dye sometimes added to turmeric and pulses as an adulterant.
· When turmeric powder suspected of adulteration is treated with alcohol and concentrated hydrochloric acid, the mixture turns pink/red, confirming the presence of Metanil yellow.
Information Booster:
· Consumption of Metanil yellow can cause neurotoxicity, carcinogenic effects, and damage to liver, kidneys, and intestine.
· Food Safety and Standards Authority of India ( FSSAI) has banned its use in food items.
· Turmeric adulteration is a common food safety issue in India.
· Other common adulterants: Lead chromate (in turmeric), brick powder (in chili), papaya seeds (in pepper).
· Simple home tests are promoted by FSSAI’s “Detect Adulteration with Rapid Test (DART)” initiative.