When oxygen is not available, many organisms switch to fermentation instead. But because fermentation can’t use the high energy bond in oxygen, it provides a lot less energy, per molecule of sugar, than respiration does. In respiration, the waste products are carbon dioxide and water. In fermentation, different organisms produce different waste products — most commonly, lactic acid and ethanol.
Processing
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Processing Prologue
- PC 0.0 Prologue
Harvest
- PC 1.0 What's in Chapter 1?
- PC 1.01 The Harvest
- PC 1.02 Mechanical Harvesters
- PC 1.03 Ripeness
- PC 1.04 Fruit Softening
- PC 1.05 Reddening
- PC 1.06 Brix
- PC 1.07 Recap and Glossary
- PC 1.08 Comprehension Test — Chapter 1
The Wet Mill
- PC 2.00 What's in Chapter 2?
- PC 2.01 - Cleaning and Separating
- PC 2.02 Sorting
- PC 2.03 Flotation
- PC 2.04 - Pulping
- PC 2.05 Drum Pulpers
- PC 2.06 Disk Pulpers
- PC 2.07 Screen Pulpers
- PC 2.08 Interview with Ryan Brown
- PC 2.09 Recap and Glossary
- PC 2.10 Comprehension Test — Chapter 2
Flora
- PC 3.0 What's in Chapter 3?
- PC 3.01 The Fermentation Tank
- PC 3.02 The Fermentation Process
- PC 3.03 Temperature and Time
- PC 3.04 Bacteria, Fungi, or Yeast?
- PC 3.05 Filamentous Fungi
- PC 3.06 Respiration and Fermentation
- PC 3.07 Washing
- PC 3.08 Wastewater Management
- PC 3.09 - Wastewater Treatment
- PC 3.10 Recap and Glossary
- PC 3.11 Comprehension Test — Chapter 3
Controlled Fermentation
- PC 4.0 What's in Chapter 4?
- PC 4.01 Semi-Carbonic Maceration in Winemaking
- PC 4.02 An Interview with Hugo Silva
- PC 4.03 Carbonic Maceration
- PC 4.04 An Interview with Jamison Savage
- PC 4.05 Bag Fermentation — An interview with Nikolai Fürst
- PC 4.06 Innoculation
- PC 4.07 Kenyan Double Fermentation
- PC 4.08 Fermentation in Kenya — An Interview with Mette-Marie Hansen
- PC 4.09 Hot Fermentation — Interview with Petra Střelecká
- PC 4.10 Lactic Processing
- PC 4.11 Interview with Felipe Sardi, La Palma y El Tucan
- PC 4.12 Recap and Glossary
- PC 4.13 Comprehension Test — Chapter 4
Dry Processing
- PC 5.00 What’s in Chapter 5?
- PC 5.01 Naturals
- PC 5.02 Interview with Anabella Meneses
- PC 5.03 Quality Controls
- PC 5.04 Sugars in Natural Processing
- PC 5.05 Fermentation in Natural Processing
- PC 5.06 Mechanical Demucilagers
- PC 5.07 Flavour vs. Efficiency
- PC 5.08 Pulped Naturals and Honey Processing
- PC 5.09 The Short History of Honey Processing — With Francisco Mena
- PC 5.10 Recap and Glossary
- PC 5.11 Comprehension Test — Chapter 5
Drying
- PC 6.00 What's in Chapter 6?
- PC 6.01 Drying Patios
- PC 6.02 Raised Beds
- PC 6.03 Guardiolas — Mechanical Coffee Dryers
- PC 6.04 Taints Caused by Improper Drying
- PC 6.05 Interview with Rachel Peterson
- PC 6.06 Measuring the Moisture Content of Parchment Coffee
- PC 6.07 Water Activity in Green Coffee
- PC 6.08 Ochratoxin
- PC 6.09 Recap and Glossary
- PC 6.10 Comprehension Test — Chapter 6
Dry Milling
- PC 7.00 What's in Chapter 7?
- PC 7.01 Silos and Bodegas
- PC 7.02 An Interview with Marta Dalton
- PC 7.03 Hulling
- PC 7.04 Screening — Size-Grading Green Coffee
- PC 7.05 Density Sorting
- PC 7.06 Bagging, Super Sacks, and Shipping Containers
- PC 7.07 An Interview with Diego Lara of GrainPro
- PC 7.08 Recap and Glossary
- PC 7.09 Comprehension Test — Chapter 7
Processing Final Assessment
- PC 8.01 A Final Word
- PC 8.02 Final Assessment