How to preserve coffee beans after roasting?

Coffee beans are preserved in several ways:

1. Gas-containing packaging.

The most common packaging, with glass cans, paper bags or plastic containers to package beans, powder, and then cover or seal packaging. Low preservation, and because of contact with the air at all times, need to drink as soon as possible, drinking period of about a week.

2, vacuum packaging.

Packaging containers (cans, aluminum foil bags, plastic bags) After filling with coffee, the air inside the container is evacuated. Although it is called vacuum, it actually removes up to 90% of the air and is not suitable for preserving coffee powder.

3. Gas filling packaging.

A pinhole is designed on the metal bag. After filling the coffee, inert nitrogen gas is injected to squeeze out the carbon dioxide in the bag from the pinhole. This method is more popular, but after all the gas glass is exhausted, some air will be drilled from the pinhole into the bag.

4. Gas sorbent packaging.

The sorbents made of deoxy and decarbonization are placed in packaging bags, and the air in the packaging can be easily absorbed, and the carbonic acid gas generated by coffee can also be absorbed, but the disadvantage is that the aroma of coffee will also be absorbed.

5, UCC Rome packaging.

This is currently the most ideal coffee packaging, all in the form of beans rather than powder packaging. It is similar to a pinhole metal bag, except that the air inside the bag can be exhausted through the pinhole, while the one-way piston can prevent the air outside the bag from entering the bag. Coffee makers cool the beans immediately after roasting and pack them, pumping nitrogen into the bags to vent the gases. Although this packaging is the most ideal, but the material is expensive, high cost, currently only the selection of coffee companies will use this packaging method.