The composition of coffee beans explains what caffeine is.
Caffeine: caffeine is the most eye-catching of all the ingredients in coffee.
It belongs to a kind of phytoxanthin (animal muscle component). It has the same properties as theobromine contained in cocoa. Green tea contains the same theophylline, and the percentage of reduction after baking is very small. Caffeine has a very extensive effect. It will affect the brain, heart, blood vessels, gastrointestinal tract, muscles and kidneys. The right amount of caffeine will stimulate the cerebral cortex and promote sensory judgment, memory and emotional activity. Let the myocardial function become more active, dilate blood vessels and enhance blood circulation, and improve metabolic function, caffeine can also reduce muscle fatigue and promote digestive juice secretion. In addition to this, because it also promotes the kidney function to help the body expel excess sodium ions (chemicals that hinder the metabolism of water molecules), caffeine will not accumulate in the body like other narcotic and excitant substances (* * products, paint solvents, stimulants, etc.) and will be excreted in about two hours. The biggest bitterness of ─ in coffee flavor is caused by caffeine.
Tannic acid: after extraction, tannin will turn into a yellowish powder, which can easily blend into water. After boiling, it will decompose and produce pyrosylic acid, which will make the coffee taste worse. If the coffee is soaked and left for several hours, the color of the coffee will become stronger than when it was just soaked. And it is also less tasty, so there is the saying that "it is best to drink it as soon as possible."
Fat: the fat contained in coffee plays a very important role in flavor. It is found that there are many kinds of fat in coffee, the most important of which are acidic fat and volatile fat. Acidic fat means that there is acid in fat, and its strength varies with different types of coffee, and volatile fat is the main source of coffee aroma. Once the fat contained in roasted coffee beans comes into contact with the air, chemical changes may occur and the taste and flavor will become worse.
Protein: the main source of calorie is protein, and like dripping coffee, most of the protein will not dissolve out, so no matter how much coffee you drink, the nutrition you get is limited, which is why coffee will become a sacred food for dieters.
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Bulletproof coffee can lose weight. Who invented it? What is the principle?
Bulletproof coffee can lose weight. Who invented it? What is the principle? The inventor of bulletproof coffee is cloud computing expert Dave Aspree (Dave Asprey), who went to Xizang in 2004 to study meditation, and later changed his spiritual practice plan because of Xizang's yak butter tea. When he returned to the United States, he spent years studying the ingredients of yak butter tea, trying to invent a sugar-free and milk-free tea.
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The technology of coffee grinding three stages of coffee bean grinding
The task of grinding roasted coffee beans into powder is called grinding coffee beans. It is said that Beethoven puts sixty coffee beans into the mill every morning, grinds and brews coffee and enjoys its fragrance. And then experience the fun excitedly. According to its size, the grinding methods of coffee beans can be divided into three types: rough grinding, medium grinding and fine grinding. According to
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