Caffeine has a particularly strong bitter taste and stimulates the central nervous system, heart and respiratory system. Moderate caffeine can also reduce muscle fatigue and promote the secretion of digestive juice. Because it can promote renal function, it has diuretic effect and helps the body discharge excess sodium ions. But too much intake can lead to caffeine poisoning. The boiled tannic acid will be decomposed into wood vinegar, so the brewing time is too long, and the taste of coffee will become worse after cooling. The most important fats are acidic fats and volatile fats. Acidic fat, that is, fat contains acid, and its strength will vary with different types of coffee. Volatile fat is the main source of coffee aroma, and it is a substance that emits about 40 kinds of aroma. The main source of heat in protein is not high. Protein at the end of coffee will not dissolve out when making coffee, so the intake is limited. Raw beans of sugar coffee contain about 8% sugar. After baking, most of the sugar will be converted into caramel, which will turn coffee brown and combine with tannic acid to produce sweetness. The fiber of raw beans will carbonize after baking and combine with caramel to form the color of coffee. Minerals contain a small amount of lime, iron, phosphorus, sodium carbonate and so on. Table of nutritional components of coffee

The nutrients in each 100g coffee bean are as follows: moisture 1.2g protein 1.6g fat 1.7g cellulose 9g ash 1.2g calcium 120mg phosphorus/. 2mg sodium, 3mg vitamin B2 1. 12g nicotinic acid 1.5mg caffeine 1.3g tannin 8g efficacy Pharmacologists/institutions drink coffee after a hangover, which can rapidly oxidize acetaldehyde converted by alcohol, decompose it into water and carbon dioxide and excrete it. Diuretic and dehumidifying caffeine can promote renal function, expel excess sodium ions from the body, increase urination, improve abdominal distension and edema, and help to lose weight. Black coffee is more diuretic. Coffee for relieving constipation can promote metabolic function and activate digestive organs, which has a great effect on constipation. improve

The results of liver function research show that patients with chronic liver diseases such as hepatitis or cirrhosis will improve their liver function if they drink more than one cup of coffee every day. Caffeine, an appetizing food aid of Japanese osaka city university Research Group, can stimulate sympathetic nerve, stimulate gastrointestinal secretion of gastric acid, promote digestion, prevent abdominal distension and gastroptosis, and promote gastrointestinal hormones and peristalsis hormones, thus quickly relieving constipation. Calming wind and relieving spasm coffee can increase high-density cholesterol, accelerate the metabolism of bad cholesterol, reduce coronary atherosclerosis and reduce the probability of stroke. A cup of black coffee after a meal can effectively whiten the skin. Black coffee can also promote cardiovascular circulation. Stop hard work

Patients with low blood pressure can get better by drinking black coffee every day. In the process of brewing coffee at high temperature, it will also produce an antioxidant compound, which is helpful for anti-cancer, anti-aging and even prevention of cardiovascular diseases, and can be comparable to fruits and vegetables. Caffeine is a mild stimulant, which can improve the sensitivity and attention of the human body, accelerate the metabolism of the human body, improve the mental state and physical quality of the human body, and thus eliminate fatigue. Prevention of gallstones For caffeinated coffee, it can stimulate gallbladder contraction and reduce cholesterol which is easy to form gallstones in bile. The study found that men who drink two or three cups of coffee a day have a lower risk of gallstones than 40%. Researchers at Harvard University can prevent

The conclusion of radiation injury is obtained in mouse experiments and can be applied to humans. Experiments by atomic researchers in Baba, India on emotional effects show that the average person absorbs 300 mg (about 3 cups of brewed coffee) every day, which will have a good effect on a person's alertness and mood. Bathing with coffee powder is a kind of hyperthermia, which has the function of losing weight. Coffee can accelerate the body's metabolism and reduce fat formation.