The current mainstream coffee packaging in market is: aluminum foil packaging with one-way ventilation valve, vacuum packaging, inert gas filled packaging and environmentally friendly packaging.Packing with one-way ventilation velve is widely used to pack freshly roasted coffee beans. It`s quite popular for low cost, simple process and the function to preserve the freshness of coffee beans in a short period of time effectively. Therefore, they are widely accepted by domestic manufacturers. And they would sure be the best choice if the coffee beans are fresh enough, which means the coffee beans are not kept long for more than three months ---- usually ideal within one month. Vacuum packing is also called brick coffee jokingly. Its content is mostly coffee powder. Fresh coffee has a continual and slow process of raleasing gas for about 2 weeks, so vacuumizing is a process of aging in itself. And it is for this consideration, that to guarantee the freshness of vacuum-packed coffee is almost impossible; and what to be done is just lowering the quality of the coffee so as to asking for a longer guarantee period. Inert gas filled packaging is more expensive packaging, inert gas filled make the oxidation process of coffee beans slow down. ILLY use this packing method, it ensures to get the good effect of keeping fresh. But another question is that person feels that once the coffee bean is beaked which is stored in this way, the oxidation rate become very fast. Because many coffee sellers were to market their own products, and consumers also consumed coffee very quickly, so we could regardless of the seal problem of the packages, and it was ok to take paper bag and so on as the packing bag. But in our country, it`s a long period of time for the coffee to pass to consumers from manufacturers and sellers. So environmentally friendly packaging is not practical.
It is a misunderstanding that the coffee beans are the bigger the better. For a single kind of coffee beans which are not blended or mixed with others, those fine-sized are always our first choice. Of course, there are some particular ones. For example, the coffee beans in Ethiopia are of different sizes for some influences from local production technology and product standards.
And just like the type of bean, for a single variety of coffee beans that have not been blending, the more uniform of the bean color the better. If the depth of the colour is different,so there are many possibles, or choosing accure bean of coffeebean is the aging old bean that