First of all, American coffee
American coffee is a kind of coffee and the most common coffee. It is made of black coffee, which is made of drip coffee pot or concentrated in Italy by adding a lot of water. American coffee tastes mild. Because the general extraction time is relatively long (about four or five minutes), the caffeine content is high.
Coffee beans contain about 5% to 8% sugar, and most of them are converted into caramel after baking. Caramel is the source of fragrance and bitterness, and unconverted sugar leaves a little sweetness. Tannic acid will be released during baking, which will combine with caramel to produce a slightly bitter sweetness. Therefore, people generally have five tastes of coffee: bitter, sour, sweet, fragrant and astringent.
Second, the efficacy and role of American coffee
1, American coffee contains certain nutrients.
Nicotinic acid in American coffee contains vitamin B, and green beans in coffee after cake baking are higher. But also triacylglycerol, caffeine, tannic acid and so on.
2. American coffee can promote metabolic function.
Moderate drinking of American coffee can promote the digestive system and play a great role in constipation. Drinking a cup of coffee after a meal is also beneficial to digestion and absorption.
American coffee can sober up.
Drinking a proper amount of coffee after drunkenness will make the hydrogen bromide converted from ethanol rapidly oxidized in the air and converted into water and carbon dioxide to be excreted.
American coffee can relieve fatigue.
To relieve fatigue, we must supplement nutrition, rest and sleep quality, and promote metabolism, and American coffee just has this effect.
Three cups of American coffee a day can prevent gallstones.
For American coffee containing caffeine, it can stimulate gallbladder collapse and reduce cholesterol which is easy to produce gallstones in bile fluid.
6. The influence of American coffee on mentality
Experiments show that the average person digests and absorbs 300 milligrams of caffeine a day (about 3 cups of brewed coffee), which will have an excellent impact on a person's alertness and mentality.