Machine-translated by Google. Questions are authored in English.
Top

Discussion

A shortage of assimilable nitrogen in grape must may lead to

  • A.A wine with much more colour than would be expected
  • B.Complete prevention of any malolactic fermentation
  • C.A stuck fermentation and hydrogen sulphide formation
  • D.A faster fermentation that finishes far too soon

Answer: C

Yeast needs nitrogen to build cell material, and when it runs short the fermentation slows or halts and the stressed yeast may produce hydrogen sulphide, giving a rotten-egg smell. Winemakers add nutrient salts to avoid both problems.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.