Which of the following is responsible for the red colour of beetroot?

Question

Accepted Answer

1. Beetroot red colour comes from betalain pigments, specifically the betacyanin called betanin.

2. Betanin (a betacyanin) is the principal red pigment in beetroot; its molecular formula is $C_{24}H_{26}N_{2}O_{13}$.

3. The other options are incorrect:
- Curcumin: a yellow pigment from turmeric.
- Beta carotene: an orange carotenoid (pro-vitamin A) found in carrots.
- Lycopene: a red carotenoid abundant in tomatoes, not beetroot.

Therefore the correct choice is (2) Betanin.

FINAL_ANSWER: b

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