What are the ingredients of coffee?

Coffee is a very important drink in life and a very important material in Western countries. The role of coffee is to serve as a daily beverage. It contains a lot of beneficial substances that can better replenish the body. Moreover, the taste of coffee is rich and very suitable for people's taste needs. Let’s take a look at what the ingredients of coffee are? I hope everyone can understand it.

Coffee contains caffeine: it has a particularly strong bitter taste and stimulates the central nervous system, heart and respiratory system. A moderate amount of caffeine can also reduce muscle fatigue and promote the secretion of digestive juice. Because it promotes kidney function and has a diuretic effect, it helps the body excrete excess sodium ions. But consuming too much can lead to caffeine poisoning.

Coffee contains tannins: after extraction, tannins will turn into light yellow powder, which can easily dissolve in water. After boiling, it will decompose and produce pyrotannic acid, which makes the coffee taste worse. If the coffee is brewed and then left for several hours, its color will become darker than when it was just brewed, and it will also be less flavorful. That's why there is a saying that "it's best to drink the brewed coffee as soon as possible."

Coffee contains fat: The fat contained in coffee plays an extremely important role in the flavor. After analysis, it was found that the fat contained in coffee is divided into many types, and the most important ones are acidic fat and volatile fat. Acidic fat refers to fat containing acid, and its strength varies depending on the type of coffee. Volatile fat is the main source of coffee aroma. Once the fat contained in the roasted coffee beans comes into contact with the air, it will undergo chemical changes and the taste and aroma will deteriorate.

Coffee contains protein: the main source of calories, but the proportion is not high. The protein in coffee grounds mostly does not dissolve when the coffee is brewed, so the amount you can ingest is limited.

Coffee contains sugar: Green coffee beans contain about 8% sugar. After roasting, most of the sugar will turn into caramel, making the coffee brown and combining with tannin to produce sweetness.

Coffee contains minerals: lime, iron, sulfur, sodium carbonate, phosphorus, chlorine, silicon, etc. Due to their very small proportion, they do not affect the flavor of coffee much, and overall only bring a slightly astringent taste.