What are the main ingredients in coffee beans?
Coffee can be divided into the following ingredients:
Caffeine: it has a particularly strong bitter taste and stimulates the central nervous system, heart and respiratory system. The right amount of caffeine can reduce muscle fatigue and promote digestive juice secretion. It also promotes kidney function, has a diuretic effect, and helps the body expel excess sodium ions from the body, but eating too much can lead to caffeine poisoning.
Tannic acid: the boiled tannic acid will decompose into pyrouric acid, so the coffee that has been brewed for too long will taste worse.
Fat: the most important ones are acid fat and volatile fat.
Acidic fat: fat contains acid, its strength will vary according to the type of coffee.
Volatile fat: is the main source of coffee aroma, it is a kind of aroma will emit about 40 kinds of aromatic substances.
Protein: the main source of calories, the proportion is not high. Most of the protein in coffee beans will not dissolve out when brewing coffee, so the intake is limited.
Sugar: coffee beans contain about 8% sugar. After baking, most of the sugars are converted to caramel, which browns the coffee and combines with tannins to produce sweetness.
Fiber: the fiber of raw beans will be carbonized after baking and combine with caramel to form the hue of coffee.
Minerals: contains a small amount of lime, iron, phosphorus, sodium carbonate and so on.
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Growth characteristics of Coffee trees
Coffee trees belong to the evergreen family of Akanaceae. They are tropical plants and are not cold-tolerant. Most of them are planted in areas with elevations of 300,400m, and also in highlands with elevations of 2000-2500 meters. But those who plant on slopes above 1500 meters above sea level have better quality.
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Coffee cultivation requirements for the environment
Coffee cannot be grown in any environment, because it is originally a tropical rainforest plant, and in the development of the system, it develops habits that require calm wind, warm, shade or semi-shade and humid environments. Therefore, coffee has strict requirements for planting conditions. We call the strip of area on both sides of the equator, between 25 degrees north and south latitude, suitable for coffee growth, coffee belt.
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