The nine main ingredients of coffee beans
1. Caffeine
It has a particularly strong bitter taste and stimulates the central nervous system, heart and respiratory system. Appropriate amount of caffeine can also reduce muscle fatigue and promote digestive juice secretion. Because it promotes kidney function, it is diuretic and helps the body to expel excess sodium ions from the body. But eating too much can lead to caffeine poisoning.
two。 Tannic acid
Boiled tannic acid will decompose into pyrouric acid, so coffee that has been brewed for too long will taste worse.
3. Fat
The most important of these are acidic fat and volatile fat.
4. Acid fat
That is, fat contains acid, its strength will vary according to the type of coffee.
5. Volatile fat
Is the main source of coffee aroma, it is a substance that emits about 40 kinds of aroma.
6. Protein
The main source of calories, the proportion is not high. Most of the protein in coffee powder will not dissolve out when brewing coffee, so the intake is limited.
7. Sugar
Raw coffee beans contain about 8% sugar. After roasting, most of the sugars are converted to caramel, which browns the coffee and combines with tannins to produce sweetness.
8. Fibre
The fiber of raw beans will be carbonized after baking and combine with caramel to form the hue of coffee.
9. Mineral substance
Contains a small amount of lime, iron, phosphorus, sodium carbonate and so on.
10. Table of nutritional components of coffee
The nutrients in every 100 grams of coffee beans are shown in the following table
The nutritional composition of every 100 grams of coffee extract is shown in the following table.
Dissolve 10 grams of coffee in hot water with 0.04 grams of caffeine and 0.06 grams of tannins.
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The characteristics of coffee beans as the standard for judging high-quality coffee beans
At present, there is no clear judgment standard of fine coffee in the international community. Here, we will briefly explain the standards of the American Fine Coffee Association and the basic standards of coffee producing countries. American Fine Coffee Association Standard: 1. Whether it has rich dry aroma (Fragrance). The so-called dry aroma refers to the aroma of roasted or ground coffee. two。 Whether it has rich wet aroma (Aroma).
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The etiquette of drinking coffee should not cool the coffee with your mouth.
It has been said that a good cafe should make people feel at home or relaxed. Will not be restrained by any etiquette, everything is natural ~ at will, speak freely. Although this sentence sounds reasonable, we should also understand the basic coffee etiquette. 1. Keep your fingers from the ear of the cup: coffee you drink after a meal usually use sleeves.
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