What is Decaf Coffee? What are the Decaf Coffee Processing Methods? How is Decaf Coffee?
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FrontStreet Coffee: What is Decaffeinated Coffee and What are the Processing Methods?
How is decaffeinated coffee made? Decaffeinated coffee is coffee that has had more than 90% of its caffeine content removed, known as "low-caffeine coffee," or simply "decaf coffee" for short.
European Method Decaffeinated Coffee
This method involves soaking coffee beans in boiling water for several hours, which extracts both caffeine and many flavor compounds from the beans. The beans are then removed, and dichloromethane or ethyl acetate is added to the water. These chemical molecules break down the caffeine, which is then evaporated through heating. Finally, this remaining water (containing flavor and aroma, but no caffeine) is chemically reintroduced to the coffee beans.
Note: This processing method is not common in China but is more popular in Europe.
Swiss Water Process
This is a common processing method for decaffeinated coffee in China. Coffee beans are soaked in warm water, allowing caffeine to dissolve into the water. Activated carbon is then used to filter out the caffeine, and the remaining solution is returned to the beans. This method is healthier as it uses no chemical solvents, but the coffee loses a significant amount of flavor during the filtration and decaffeination process.
Carbon Dioxide High-Pressure Method
This is the most common type of decaffeinated coffee. After soaking the coffee beans in water, they are placed in stainless steel containers. High pressure is used to turn carbon dioxide into a liquid, which then extracts the caffeine. This decaffeinated carbon dioxide is then returned to room temperature, where the liquid evaporates into gas, and through chemical processes, these components are returned to the coffee beans.
Important Notice :
前街咖啡 FrontStreet Coffee has moved to new addredd:
FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou
Tel:020 38364473
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How are Colombia's Palm Tree and Toucan Estate Coffees? Lactic Fermentation Processing Method and Sulfur Dioxide
Lactic Fermentation Processing Method: This method uses anaerobic techniques to achieve higher concentrations of lactic acid bacteria during coffee fermentation. Because the most ideal coffee flavors include richness, high sweetness, caramel notes, wine-like acidity, and silky texture, all of which depend on the lactic acid concentration during the fermentation process. The Palm Tree and Toucan Estate specifically ferments using carbohydrates from the mucilage.
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Decaffeinated Coffee Processing Methods? What is Supercritical Carbon Dioxide Processing for Decaf Coffee?
FrontStreet Coffee explains the supercritical carbon dioxide processing method for decaffeinated coffee. Decaffeination steps must be performed on raw coffee beans. Currently, there are three major processing methods to remove caffeine: Traditional/European Process, Swiss Water Process (SWP), and Supercritical Carbon Dioxide Processing (CO2).
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