What is Decaf Coffee? What are Decaf Coffee Treatments? How about decaf?

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Qianjie Coffee briefly describes what is decaf and what are the treatments of decaf?

How is decaf made? Decaffeinated coffee is coffee that removes more than 90% of the caffeine. It is called "decaffeinated coffee", or "decaf coffee" in short.

European decaf coffee

This one is to soak the coffee beans in boiling water for several hours, which will bring out the caffeine and many flavor substances in the coffee beans, then pick up the coffee beans and add dichloromethane or ethyl acetate to the water. the chemical molecules break down the caffeine and evaporate the caffeine by heating the remaining water (flavor and aroma). No caffeine) and then pour it into the coffee beans chemically.

Note: this kind of treatment is not common in China, but is more popular in Europe.

Swiss water treatment method

This is a common treatment of low-caffeine coffee in China. Soak the beans in warm water and caffeine will dissolve in the water, then filter out the caffeine with activated carbon tools and pour other solutions back into the beans. This method is healthier and does not have any chemical solvents, but coffee loses a lot of flavor in the process of filtration and decaffeination.

Carbon dioxide high pressure method

This kind of decaffeinated coffee is the most common one, which soaks the beans in a stainless steel bucket and uses high pressure to turn carbon dioxide into a liquid to extract caffeine. Then put the carbon dioxide (decaffeinated) back into the environment at room temperature, and the liquid evaporates into a gas, chemically returning these things to the coffee beans.