Coffee review

Run coffee with water, the higher the temperature, the more caffeine will dissolve, right?

Published: 2024-11-08 Author: World Gafei
Last Updated: 2024/11/08, Running coffee with water, the higher the temperature, the more caffeine will dissolve, right? Espresso coffee not only has unparalleled aroma, consistency and rhyme, but also has one of its biggest features, which is very low caffeine. When some people drink Esprsso coffee for the first time, they have the illusion that such strong and pure coffee must have a high caffeine content. In fact, on the contrary, in all the coffee makers

Run coffee with water, the higher the temperature, the more caffeine will dissolve, right?

In addition to its unparalleled aroma, consistency and rhyme, Espresso coffee has one of its biggest features: low caffeine. When some people drink Esprsso coffee for the first time, they have the illusion that such strong and pure coffee must have a high caffeine content. In fact, on the contrary, of all the coffee-making methods, coffee is made with the same beans, and the coffee made by the Espresso machine contains the least caffeine. Because the caffeine in coffee is a water-soluble substance, the longer the coffee powder is in contact with water, the more caffeine is dissolved, while the brewing time of Espresso coffee is only more than 20 seconds. When the caffeine is not released, a cup of mellow coffee has already been brewed, so the caffeine content is only 1max, 3mer, 1max, which is generally used in other brewing methods.

In addition to its unparalleled aroma, consistency and rhyme, Espresso coffee has one of its biggest features: low caffeine. When some people drink Esprsso coffee for the first time, they have the illusion that such strong and pure coffee must have a high caffeine content. In fact, on the contrary, of all the coffee-making methods, coffee is made with the same beans, and the coffee made by the Espresso machine contains the least caffeine. Because the caffeine in coffee is a water-soluble substance, the longer the coffee powder is in contact with water, the more caffeine is dissolved, while the brewing time of Espresso coffee is only more than 20 seconds. When the caffeine is not released, a cup of mellow coffee has already been brewed, so the caffeine content is only 1max, 3mer, 1max, which is generally used in other brewing methods.

Tea decaffeination methods at home and abroad, such as hot water extraction, organic solvent extraction, membrane separation, precipitation, supercritical CO2 extraction, column chromatography and so on. Hot water extraction method

According to the nature that caffeine is soluble in hot water over 80 ℃, whether fresh tea leaves, steamed green leaves or withered leaves are directly immersed in hot water of 85 ℃, caffeine is quickly dissolved after about 1min, and the dissolution rate is 71%. After soaking 3min, the dissolution rate of caffeine is 83%. However, when the hot water temperature was 60 ℃, the caffeine dissolved from fresh tea leaves and steamed green leaves was very little, indicating that the dissolution of caffeine was restricted by hot water temperature. Wu Xiaochong's research shows that when the extraction temperature increases from 80 ℃ to 90 ℃, the extraction rate of caffeine can be increased from 60.51% to 72.26%, but there is no significant difference in the extraction rate of caffeine after 5min.

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