CSW Chapter 1: Wine Composition and Chemistry

88 cards   |   Total Attempts: 193
  

Cards In This Set

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What are the 5 main components of wine?
  • Water,
  • Alcohol,
  • Acid,
  • Sugar
  • Phenolic Compounds.
What else may be in wine besides the 5 main components?
  • Bacteria,
  • yeast,
  • proteins.
What percentage of Wine is water?
80-90%.
Where does water in wine come from?
Primarily from the grapes themselves although small amounts of water may be added incidentally during winemaking. In rare cases added by the winemaker.
Why would a winemaker add water to wine?
If potential alcohol, actual alcohol or phenolic compounds are beyond desired levels.
How much alcohol (%) is in wine?
Usually 10% to 15% of the volume.
What is the main alcohol in wine?
Ethyl Alcohol or Ethanol.
What 4 alcohols might be in wine?
  • ethanol (primarily)
  • glycerol
  • methyl alcohol (methanol)
  • fusel alcohol (also referred to as fusel oils or higher alcohols)
What makes up the "body" or "weight" of a wine?
  • alcohol
  • sugar
What do thick-appearing "tears" or "legs" in a glass after swirling indicate?
Primarily indicate high levels of alcohol. Can also indicate sugar in a sweet wine.
What percentage of the wine is made up of acid?
0.5 to .75% of the volume.
A variety of acids especially in white wine gives the wine what?
  • structure
  • balance
  • thirst-quenching refreshment
What are the 6 principle acids in wine?
  • Tartaric acid
  • Malic acid
  • Citric acid
  • Lactic acid
  • Acetic acid
  • Succinic acid
What is the most prevalent acid found in both grapes and wine?
Tartaric acid
Which wine acid is the strongest in terms of pH?
Tartaric acid