How to preserve coffee beans and coffee powder it is recommended to buy only two weeks of coffee beans at a time

Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style)

As the flavor of coffee is very unstable, it is easily affected by light, temperature, humidity, oxygen and other factors. Roasted coffee is exposed to the air for a long time and is prone to fat oxidation, which is an important cause of coffee deterioration. Roasted coffee contains about 10-15% fat, 75% triglyceride, and 50% linoleic acid. At the same time, linoleic acid can be automatically oxidized to hexanal, and the longer it is exposed to the air, hexanal will be oxidized into volatile substances, resulting in bad quality, resulting in the decline of the taste of coffee.

The storage of cooked beans needs to have different requirements according to the roasting depth of coffee beans and the storage place.

Shallow roasted coffee beans lack some aroma and must be preserved in a dry environment. If there is humidity, oxidation will bring stale odors.

Deep-roasted coffee beans need to remove the miscellaneous smell of beans before storage, especially some merchants do not pick out defective beans before deep baking, and do not pay attention to screening after deep baking, resulting in a variety of smelly and scorching smells of beans, which need to be removed in advance when storing. At the same time, there will be oil on the surface of deep-roasted beans, and if it is preserved for a long time, the fat will oxidize and deteriorate, there will be a bad smell, and the quality of the whole coffee will vary greatly.

During the shelf life of roasted coffee beans, the flavor of coffee reaches its peak a few days after roasting, which lasts for a period of time, and then gradually loses its flavor over time. Preservation in good condition can prolong the life of coffee and reduce the loss of flavor.

It is recommended to buy only the amount of coffee beans you can drink within two weeks at a time, and the speed of microbes and oxidation is appropriate at room temperature-freshly roasted coffee beans can be kept for two weeks at one room temperature. If you can finish your coffee beans within two weeks of baking, it is strongly recommended to keep them away from light at room temperature, so that the same bag of beans can feel its variety. Feel its different flavor every day, not only add some color to life, but also increase experience, which is very helpful to judge the freshness of coffee beans.

Many friends, especially those who have just come into contact with the original coffee, buy coffee powder directly, and the amount they buy cannot be consumed at once, which is very fatal to the coffee flavor damage, after grinding, because its contact surface with the air increases greatly, oxidation is very fast, the freshness of the coffee will be lost immediately, and the original mellow flavor of the coffee will gradually disappear. Freshly baked coffee beans are ground into powder, and the flavor changes within two or three days. So, if you are not just for a caffeinated drink, but also want to taste the mellow coffee that represents the true coffee spirit, it is recommended that you do not buy coffee powder directly unless you consume it quickly in a day or two. buy coffee beans and a bean grinder or go straight to coffee cow non-coffee to enjoy freshly ground coffee!

END