The Impact of Wine Oxidation
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Questions and Answers

Name two effects of oxygen exposure on wine quality.

Lowering of quality or enhancement

What are the two types of oxidation in wine?

Enzymatic oxidation and chemical oxidation

Name two substrates for oxidation in must and wine.

Phenolic compounds and ascorbic acid

What is the structure produced during the oxidation reaction?

<p>Kenone</p> Signup and view all the answers

What does kenone do during oxidation?

<p>Traps volatile thiols and masks their aromatic aromas</p> Signup and view all the answers

Which compound can be a substitute for oxygen in must and wine?

<p>Ascorbic acid</p> Signup and view all the answers

What is the effect of oxidation on the aroma of wine?

<p>Causes loss of fruitiness and general aroma</p> Signup and view all the answers

Which type of oxidation occurs in the juice and is much faster?

<p>Enzymatic oxidation</p> Signup and view all the answers

What is the initial form of oxygen in wine before it starts being consumed?

<p>Dissolved O2</p> Signup and view all the answers

What color does white wine turn due to oxidation?

<p>Brown</p> Signup and view all the answers

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