Which element is particularly associated with the characteristic smell of many sulfur-containing onion compounds?

Options

  • A. Sulfur
  • B. Calcium
  • C. Iron
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. Sulfur

Detailed Explanation

Sulfur is an important element in many compounds responsible for the characteristic smell and chemical reactions associated with onions. When onion cells are damaged, sulfur-containing molecules participate in enzymatic reactions that produce volatile compounds. Sulfur chemistry is also important in amino acids, proteins, fertilizers and industrial chemicals.