Where does the bitterness in coffee come from?
Many people will think that caffeine is the source of coffee bitterness, but in fact caffeine accounts for only 1/10 of the bitterness, so where does the remaining 90% come from?
1. Brown pigment
Brown pigment is divided according to the size of the molecule, and the bigger the molecule, the stronger the bitterness. In the process of baking, deep baking will increase the brown pigment, and the brown pigment with larger molecules will also increase. So when drinking deep-baked coffee, you will find that it has a strong bitter taste. Arabica and Congo coffee beans have different bitterness and taste, which is due to the amount and molecular size of brown pigment. The content of oligosaccharides in Congo is relatively low, and caramelization will not occur, so it is easy to produce brown pigments with large molecules, and it is easy to produce bitterness even if it is baked lightly.
2. Amino acids and proteins
Cyclic diaminic acid is produced during the heating of amino acid and protein, which is a substance produced by the combination of two amino acids. The intensity of bitterness varies with the way of combination. In addition to coffee, cocoa, dark beer and other substances are also produced by it.
However, the bitterness can be controlled by changing the type of coffee beans, the way of baking, the degree of baking and the method of extraction. Acid, etc.
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Pay attention to the hidden dangers of coffee partners affecting their health.
If you ask what a coffee partner is, most people might say: it's milk that makes coffee white and thick. In fact, if you carefully look at the instructions on the coffee partner, I am afraid you will find that the truth is thousands of miles away. In fact, the trans fatty acids contained in it have been recognized by the nutrition community to be harmful to cardiovascular health. On the front of the coffee partner, there are three small characters
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The function of coffee how to keep in good health
More and more people like to drink coffee, whether in a friend party or in the office to discuss things, will drink a cup of coffee, people drink coffee is a kind of feeling, is a kind of fashion, is a kind of leisure, is a kind of culture. But have you ever heard that coffee can also keep you healthy? In Australia, tests on track and field athletes who consumed a small amount of caffeine showed
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