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If malolactic fermentation occurs unintentionally after a wine has been bottled, the result is

  • A.A wine with markedly improved colour and better clarity
  • B.A wine with a considerably higher alcohol content
  • C.No detectable change of any kind in the finished wine
  • D.A hazy, slightly gassy wine that is regarded as faulty

Answer: D

Carbon dioxide released in a sealed bottle leaves the wine gassy and the bacterial growth makes it hazy, so the step is either completed and stabilised before bottling or prevented outright. Filtration and sulphur dioxide are the usual means of preventing it.

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