What are the cultivation techniques of coffee trees? what is the reason for the astringency of coffee?
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The origin of coffee tree [4] is in Ethiopia in Africa. In botany, coffee trees belong to the evergreen trees of the subgenus Rubiaceae, and coffee beans, commonly known as coffee beans, are actually the seeds of the fruit of coffee trees. They are called coffee beans only because they are shaped like beans. Climate is the decisive factor for coffee cultivation. Coffee trees are only suitable for growing in the tropics or subtropics, so the zone between latitude 25 degrees south and north is generally called coffee belt or coffee area. However, not all the land located in this area can produce good coffee trees.
Conditions
The ideal planting conditions for coffee trees are as follows: the temperature is between 15 and 25 ℃, and
Coffee tree
Coffee tree
The annual rainfall must reach 1500 to 2000 mm, and the rainfall time should be in line with the flowering cycle of the coffee tree. Of course, in addition to the seasonal rainfall, there should also be fertile soil and good drainage. Fertile soil containing volcanic ash, in addition, although sunlight is an indispensable element for the growth and fruit of coffee, too strong sunlight will inhibit the growth of coffee trees, so various producing areas usually cooperate with the planting of some shade trees. The ideal altitude is 500 to 2000 meters above sea level. [2]
It can be seen that the conditions for cultivating high-quality coffee are very strict: sunlight, rainfall, soil, air temperature, as well as the way coffee beans are harvested and the process of making coffee beans will affect the quality of coffee itself.
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How to pick and handle coffee beans how to make good siphon coffee
The natural drying method sends the picked berries to the drying plant, which will be classified according to the degree of maturity, as the basis for the time and degree of exposure in the sun. Generally, overripe berries take only 1-3 days, red berries take 5-6 days, and green unripe berries take 1-2 weeks. After sun treatment, the dried fruit needs to go through the sheller to remove the peel, pulp and silver skin.
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Is there any medicine for coffee beans? how to make a strong coffee?
1. Effect on the central nervous system: caffeine, the main active ingredient of coffee, and its structural analogue theophylline have a strong central excitatory effect on coffee trees. But theophylline has a stronger effect and lasts longer than caffeine. People who take caffeine or drink caffeinated drinks often show that drowsiness disappears, fatigue is reduced, and the mind is quick. With the increase of the dose, the excitatory effect of the central nervous system becomes clearer.
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