Why does beer have foam?

Beer is a type of alcohol that we drink frequently in our daily life. Beer is not as stimulating as liquor, and the taste of beer is mellower. Many people like to drink beer, and beer is also good for the human body. But beer is always alcohol, and we must drink in moderation to avoid alcohol poisoning that endangers our lives. Many people wonder why there is foam in beer. Why does beer have foam? Let’s take a look at it next.

1. Why does beer have foam?

Beer is a sparkling wine. Bottled or canned beer is a saturated solution of carbon dioxide. This carbon dioxide can be produced during the fermentation process or added during the bottling process.

Under sealed conditions, the higher the pressure, the more carbon dioxide will dissolve. When opening the bottle, due to the decrease in pressure, a large amount of carbon dioxide will separate from the beer, forming many bubbles.

When cola or champagne is poured into a glass, a large number of bubbles will be produced, but these bubbles will quickly break, and only small droplets will splash around, making it difficult to form floating foam.

Beer contains a variety of organic substances from malt and other raw materials. Substances such as peptides and proteins in them can act as surfactants, making bubbles less likely to break and making it easier to form stable foam.

These surfactants are easily absorbed by oil. When the foam cannot be dispersed, you can dip some vegetable soup with chopsticks and tap the foam twice to make it disappear quickly.

2. Beer Benefits

1. Sterilization

Beer contains vitamin C, which can soften blood vessels. The alpha resin and beta resin in beer have strong preservative and bactericidal effects, and can kill Staphylococcus aureus and Mycobacterium tuberculosis. Beer can only be used as an auxiliary treatment method, and it cannot be used to kill bacteria by consuming it excessively.

2. Eliminate fatigue

In summer, the human body sweats a lot, taking away potassium, calcium, magnesium and other ions, especially potassium, which makes the body feel tired. Drinking beer can slightly stimulate the central nervous system and make the body feel comfortable. The carbohydrates in beer are easily absorbed by the body and release heat, thus eliminating the feeling of fatigue.

3. Promote digestion

Drinking beer in summer can not only relieve heat and cool down, but also promote the secretion of saliva and gastric juice, quench thirst, increase appetite and aid digestion.

4. Prevent vascular disease

Drinking beer in moderation can help you ingest niacin, which is beneficial to the human body. Niacin can soften blood vessels, lower blood pressure, improve blood circulation, and prevent arteriosclerosis.

5. Prevent osteoporosis

Studies have shown that the direct manifestation of osteoporosis is insufficient bone density. Beer contains a large amount of silicon that can enhance bone density. Drinking it in moderation can help people maintain strong bones and reduce the risk of osteoporosis.

3. People who cannot tolerate beer

Gout, gastritis, liver disease.