Understanding coffee preservation
Generally speaking, coffee beans are stored in containers with rubber pads on the inside of the lid. Roasted coffee beans are easy to smell and absorb the surrounding odor, so sealed bottles and cans should be used to preserve coffee beans.
Contact with air will accelerate the oxidation of coffee beans. With the decrease in the number of coffee beans, the gap in the container is getting bigger and bigger, so you should fill the container with materials such as cotton to reduce the extra space. Put the coffee beans in a hot and humid place, the surface of the coffee beans will be oily, at this time, the coffee beans have been oxidized, aroma loss, flavor no longer. When preserving coffee beans, they should be protected from direct light and should not be placed in high-temperature places such as near the heater.
At room temperature, roasted coffee beans can be kept fresh for two weeks. Refrigerating in the refrigerator will prolong the retention period and keep it fresh for about a month. However, when you open the refrigerator to pick up and put the coffee, the temperature difference with the outside will produce water fog, which accelerates the deterioration of the coffee beans. When cold storage or cryopreservation, the coffee beans can be divided into small pieces with food bags or plastic wrap, and the required amount can be taken out when in use. At the same time, we should wait for the coffee beans to return to normal temperature before grinding.
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The composition of coffee
Caffeine: caffeine is the most eye-catching of all the ingredients in coffee. It belongs to a kind of phytoxanthine (animal muscle component) and has the same properties as theobromine in cocoa and theophylline in green tea. The percentage of reduction after baking is very small, and the effect of caffeine is very extensive. It will affect the brain, heart, blood vessels, gastrointestinal tract, muscles and kidneys of the human body, and the right amount of caffeine will
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Many benefits of drinking coffee
1. Coffee contains certain nutrients. Nicotinic acid in coffee contains vitamin B, which is higher in roasted coffee beans. And there are free fatty acids, caffeine, tannic acid and so on. 2. Coffee is good for the skin. Coffee can promote metabolic function, activate digestive organs, and has a great effect on constipation. Taking a bath with coffee powder is a kind of thermotherapy, which has the effect of losing weight. 3. Coffee
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