As we know, green coffee bean can easily absorb smell, flavor and moisture of its surroundings. So, professional coffee manufactures will protect coffee bean in one-way valve seal bags which allow gas to escape out of bag instead of entering. After packing, green coffee bean should be stored in a cool, dark and dry place. By the way, freezing process is not advisable to keep green coffee bean.
After being roasted, coffee bean should be packed in Vacuum-Sealed Bags or vacuumized sealed jars to preserve coffee’s flavor and aroma. Because sunlight, moisture, oxygen and so on will accelerate the fading of coffee’s flavor and aroma.
Normally, the flavor and aroma of coffee bean which has been roasted for more than two weeks will be not attractive for people, so coffee bean should be consumed within two weeks after it is roasted.