How to preserve freshly roasted coffee beans? How to preserve the flavor of coffee beans?

After roasting, the internal chemical changes of coffee beans will continue. After roasting, there is only aroma at first, and the taste will be sour. After 4 or 12 hours, the sour taste will be gradually removed, and the taste will become full, and it should be said that it is suitable for the entrance. However, within 3 to 7 days is the peak of the best flavor, the taste is mellow and rich, when the golden period of seven days, the bitter taste will be more and more. The fragrance gradually evaporated away.

How can freshly roasted coffee beans be preserved so that their flavor can be preserved for longer?

First, the use of vertical sealing cans. Because the proportion of carbon dioxide is higher than the principle of air, the carbon dioxide released by fresh coffee beans will be stored at the bottom of the container, similar to the production of antioxidants to protect the coffee beans. In terms of containers, it is best to choose vertical storage to prevent the loss of carbon dioxide in sealed cans or bags, so it is more appropriate to choose upright sealing cans with openings upward.

Second, use a long spoon to get coffee beans. It is the same as the principle of the specific gravity of carbon dioxide, so carbon dioxide accumulates at the bottom, so do not use pouring method when taking coffee beans, otherwise the essence of the container, that is, carbon dioxide, will be poured out at the same time.

Third, the opaque light is the best for the vertical sealing tank. Because the light is the catalyst of oxidation, the choice of opaque vertical sealing tank can slow down the speed of oxidation. Although most of the lids on opaque cans are transparent, it is recommended that coffee beans should be treated as transparent as possible after storing coffee beans in cans.

Fourth, use vacuum cans. There are many vacuum cans on the market, most of which draw or take out the air in the tank to form a vacuum, in which there is no oxygen and moisture, so it will also be a way to store coffee beans.

Put it in a cool and dry place as far as possible. If the roasted coffee beans are placed in a place of high temperature, it will easily lead to the volatilization of the aroma of the coffee and the excellent substances inside. Therefore, it is best to avoid placing coffee cans in a high temperature environment, and it is best to choose a cool and dry place.

6. Do not put coffee beans in the refrigerator:

1. The air in the refrigerator is cold and dry, so it is easy to evaporate the water inside the coffee beans and lose the fragrance.

two。 There are too many odors in the refrigerator.

3. Due to the low temperature in the refrigerator, the coffee beans encounter relatively hot air when they are taken out of the refrigerator, which will condense into water vapor to cover the surface of the coffee beans. After grinding, these small water droplets will turn the coffee powder into lumps, resulting in uneven cooking and brewing.

4. As mentioned earlier, after the coffee beans have been roasted, the internal reaction continues. If the coffee beans are put in the refrigerator at this time, the coffee beans are cold and stop the internal reaction, resulting in a loss of flavor.