1.If you have seen a coffee bag, you will find a button-like object on the back that may have a small hole called a "valve."

The purpose of the device is to get carbon dioxide out of the coffee bag, because freshly roasted coffee beans must be vented and more aptly feel like they are breathing.



The role of the valve is to help the coffee beans to drain carbon dioxide, so for the coffee beans, the valve is a device to keep the air out of the air, effectively slowing the speed of coffee beans aging.

Fresh Coffee Beans Release Carbon Dioxide

In the process of roasting coffee beans, carbon dioxide from the coffee beans is released, but most of the carbon dioxide remains in the beans, so the beans slowly drain the gas inside about two weeks after roasting.

No matter how many cups of coffee you drink each day, you need to be mindful of your caffeine intake. Because not only coffee contains caffeine, but also some other foods and beverages. So, using a caffeine calculator to calculate your daily caffeine intake can be a great way to help you avoid overdose.

If the bag of coffee beans does not have a valve to help with the exhaust, the coffee beans in the bag will continue to exhaust, then the bag will overextend. If the storage environment is squeezed, the coffee bag may burst, destroying the preservation of the beans. It may take half a day or several days before you discover that coffee beans have deteriorated because of exposure to the air.

Damage To Coffee Quality By Air

As mentioned at the beginning, the air valve of a coffee bag is a device that cannot be entered only, that is, a one-way air valve. The function of the valve, in addition to excreting the gases of the coffee beans, also prevents the external air from penetrating into the coffee bag, affecting the quality of the coffee beans.

In another article, we mentioned three major variants that affect the quality of coffee beans: oxygen, humidity, and temperature, which shorten the optimal taste period of coffee beans while destroying the quality of coffee beans. It is therefore important to discharge the internal gas without allowing air to enter.

If you want to learn more about coffee or try more coffee recipes, https://roastercoffees.com/ has more coffee resources for you.

Squeeze the coffee bag to smell the fragrance?

It is important to note that when CO2 is discharged, It also releases a lot of coffee beans, which is why we squeeze coffee bags. It is possible to smell a great smell from the valve, but this scent is not the original design of the coffee bag valve. Because these CO2s are actually part of keeping coffee beans fresh, Air pressure in the bag can also help raise beans, and squeezing can also drain the fragrance of coffee beans. Affect the quality of coffee beans, so try to avoid squeezing coffee bags to smell fragrance.

In addition, the valve is also of good quality. The valve can be confirmed with the store to maintain the freshness of coffee. (Implementation uses the most advanced valve made in Italy to protect the quality of coffee beans!)

An ultimate coffee roast levels chart: https://roastercoffees.com/home-coffee-roasting/

2.
Summarize The Function Of The Gas Valve

1. Moisture prevention: Effectively keep coffee beans dry and mellow flavor, air in the water cannot run into the bag.

2. Buffering: The air in a coffee bag can be discharged from a one-way exhaust valve to reduce the impact caused by the residual gas in the bag and avoid packaging bursts when it is impacted or dropped from a height.

3. Exhaust: After the coffee is roasted, it can efficiently drain carbon dioxide from the bag and avoid bursting of the package.

In addition, some people may have experience flying with coffee beans, and you will find that the coffee bags are dry when they get off the plane, as in vacuum rice, which can also affect the flavor and preservation of fresh coffee, as cabin pressure squeezes the air out of the coffee bags. Then just stick the valve with tape and put it in a chain bag to protect the beans.

References Post:

How Does The Coffee Processing Affect The Chemical Composition And Flavor? |

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