How much do you know about coffee? 2.

Taboos on the consumption of coffee

1. Suffering from coronary heart disease, stomach disease, digestive tract ulcers and other diseases to avoid food.

two。 Pregnant women, insomniacs or before going to bed should not drink.

3. The tannic acid in coffee reduces calcium absorption. Therefore, the best time to drink coffee is to choose between two meals.

4. You shouldn't drink too much coffee.

5. Regular coffee drinkers should pay attention to calcium supplements.

Coffee should be avoided.

Coffee + spirit, increase cardiovascular burden

The selection and purchase of coffee

Fake and shoddy coffee is mixed with chicory root powder in real coffee, or roasted and crushed grains and beans. Real coffee contains caffeine and has a special aroma. Poor-quality coffee is generally out of date or lax sealing caused by moisture caused by caking, obvious changes in aroma and taste, often the aroma disappears, drinking has a peculiar smell.

There is also coffee powder milled as instant coffee, in fact, the two processes are different, instant coffee is concentrated coffee water, spray drying, the process is complex, immediately dissolved after brewing, no floating, no dregs, and although the coffee powder is ground very fine, there is floating matter after brewing, there are dregs, can not be swallowed, can only be blown to drink.

It is also common to alter the shelf life of instant coffee packaging. The shelf life of instant coffee is usually two years.

It only takes 10 minutes for coffee to refresh itself.

Researchers at the University of Barcelona have recently found that coffee takes only 10 minutes to play a role, the Daily Mail reported. The maximum amount of caffeine entering the bloodstream is 45 minutes, but it takes only a few minutes to reach half of the maximum.

Men are more sober than women after drinking espresso. They analyzed 688 college students and measured them before and after drinking coffee for 10, 20 and 30 minutes. They also found that volunteers became awake after drinking decaffeinated coffee, but to a small extent.

Decaffeinated coffee has a more obvious effect on women than men. The researchers say the effects of caffeine can last for two or three hours, and some can last as long as four or five hours, depending on individual sensitivity and metabolic rate.

Knowing so much about coffee, it can be used at any time in the future.