Study

Wine Production

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  • In Champagne Wine, the lees by a process called ____________.
    Remuage.
  • What is "liquer de tirage" ?
    A solution of wine, sugar and yeast added to a bottle of still base wine
  • Bacteria that perform malo-lactic fermentation.
    Lactobacillus & Leuconostoc
  • The sugar level is measured measured in which units?
    Brix
  • Yeast ferment sugar anaerobically to give which products?
    Ethanol and CO2
  • What is ‘blue fining’ ?
    Removal of metal ions is accomplished with potassium ferrocyanide known as ‘blue fining’
  • ___________ contains the skins, pulp, seeds, and stems of the fruit.
    Pomace
  • Which components gives wine a bitter flavour?
    Tannins / Tannic acid
  • What is "lees" ?
    The yeast sediment Is known as ‘lees’.
  • What is "dosage" and why is it added in Champagne production?
    A mixture of sugar and wine called dosage is used to add sweetness.
  • Any one desirable property of wine yeast.
    ➢growth at the relatively high acidity (i.e., low pH) of grape juice; ➢resistance to high alcohol content (higher than 10%); ➢resistance to sulfite.
  • What is the pH of grape juice?
    Acidic pH 3 - 4
  • Principal sugars in grapes
    Glucose and Fructose
  • Grape juice is also called as
    Must