Sedimentation

Question 1

What is sedimentation?

Answer 1

Suspended soils in must left to fall overtime with gravity.

Question 2

How does sedimentation work?

Answer 2

Chill juice to 4 degrees- reduces rate of oxidation and spontaneous fermentations.
Takes longer in large tall vessels- longer way to fall.
Clear juice transferred to ferm vessel, leaving solids at the bottom of sedi vessel (racking).
Solids left behind filtered by cross/depth filters.
Cheapest in terms of equipment, but £ in labour and time, and cost of chilling.

Question 3

What is centrifugation?

Answer 3

Rapidly rotating container that uses centrifugal force to separate the solids from the liquids.

Question 4

What are the advantages of centrifugation?

Answer 4

Quick
Continuous (instead of batch)
Must as well as wine
Saves time and labour cost

Question 5

What are the disadvantages of centrifugation?

Answer 5

Expensive to buy
Increases exposure to oxygen unless flushed with inert gases