Multiple choice

Characteristic smell of onion bulb is due to the presence of:

  1. lipid content

  2. reserve carbohydrates

  3. sulphur compounds

  4. bad odour of soil in which they are cultivated.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Onions contain organosulfur compounds like allyl propyl disulfide that produce their characteristic pungent smell when cells are damaged. These sulfur-containing compounds are secondary metabolites that give Allium vegetables their distinctive aroma and flavor.

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