Anaerobic fermentation is a biochemical process in which microorganisms transform organic compounds in the complete absence of oxygen.
It is a metabolic pathway by which bacteria, yeasts, or other microorganisms obtain energy without using oxygen as a final electron acceptor, producing byproducts such as alcohols, organic acids, and gases.
How does it work?
1. Microorganisms consume sugars or other organic compounds.
2. In the absence of oxygen, energy is obtained through fermentation reactions.
Examples:
Alcoholic fermentation: production of ethanol (wine, beer)
Lactic fermentation: production of lactic acid (yogurt, cheeses)
Fermentation in coffee: Carried out in sealed tanks to control sensory profiles
In the context of coffee
Anaerobic fermentation is used to develop more complex and exotic profiles, intensifying notes such as:
- Fruity
- Wine-like
- Floral
-
Sweet
It is carried out in airtight containers, where the producer controls:
- Time
- Temperature
-
pH
It differs from aerobic fermentation
Anaerobic Aerobic
- No oxygen - With oxygen
- More intense flavors - Cleaner flavors
- Greater control - More Traditional
