Biochem - Fermentation

Zymology

The science of fermentation

Fermentation

Process where living cells are able to obtain energy by splitting glucose anaerobically

Louis Pasteur

In the 19th century, he used the term fermentation to describe changes brought by yeast and other microorganisms growing without air. He also recognized that ethyl alcohol and CO2 are not the only products of fermentation

Lactic acid fermentation

A type of fermentation that happens in humans

Alcohol fermentation

A type of fermentation that happens in yeast

Glycolysis

First step of lactic acid fermentation

Pyruvic acid is reduced to lactic acid using NADH+H+, which reoxidises to NAD+

Second step of lactic acid fermentation

2 lactate acid molecules

Lactic acid fermentation produces how many molecules from 2 pyruvate acid molecules?

Lactate dehydrogenase

Enzyme responsible for the lactic acid fermentation process

Glucose breaks down into 2 pyruvate molecules via glycolysis

First step of alcohol fermentation

Alcohol fermentation

Chemical formula of this fermentation is: C6H12O6(aq) —> 2C3CH2OH(aq) + 2CO2 (g)

2 pyruvate molecules are converted into 2 carbon dioxide molecules and 2 ethanol molecules

Second step of alcohol fermentation

glycolysis, decarboxylation, and reduction

If lactic acid fermentation requires hydrolysis, glycolysis, and reduction reactions, what about alcohol fermentation?

hydrolysis, glycolysis, and reduction

If alcohol fermentation requires glycolysis, decarboxylation, and reduction, what about lactic acid fermentation

CO2 and ethyl alcohol

What are the end products of alcohol fermentation?

Lactic acid

What is the end product of lactic acid fermentation?

Lactic acid fermentation

Chemical formula for this fermentation is: C6H1206 —> 2C3H6O3

After

Does fermentation occur before or after glycolysis?

Energy

Fermentation is an anaerobic process, meaning it does not use ____

Cytoplasm

Where does fermentation occur in the cell?

Alcohol fermentation and Lactic acid fermentation

Name the two types of fermentation

C6H12O6 —> 2CH3CH2OH(aq) + 2CO2 (g)

What is the chemical equation of alcohol fermentation?

Muscle cells

Where does lactic acid fermentation occur?

C6H12O6 —> 2C3H6O3

What is the chemical equation of lactic acid fermentation?