Fermantation

livmills97
Mind Map by livmills97, updated more than 1 year ago
livmills97
Created by livmills97 almost 6 years ago
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GCSE Extension Chemistry Mind Map on Fermantation, created by livmills97 on 03/19/2014.
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Fermantation
1 Beer and wine are produced from carbohydrates such as sugars and starch.
2 Many fruits, such as grapes contain natural sugars.
3 Other crops such as wheat, barley and rice, contain starch that can be broken down into sugars (e.g. glucose).
4 Yeast is a single-celled fungus that can use sugars for a type of respiration that produces ethanol.
5 Fermentation is controlled by enzymes, which the yeast cells release.
6 Fermentation must happen in anaerobic conditions and must be kept warm.
6.1 This is because the yeast works best in warm conditions.
7 If the temperature is too low the reaction is very slow, but at high temperatures the yeast is killed.
8 If oxygen is present aerobic respiration will take place, producing carbon dioxide and water but no ethanol.
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