Why do coffee beans need to be protected from light? Why can’t they be consumed?

Coffee beans are a very popular beverage ingredient with a unique aroma and taste. However, many people may not know that coffee beans need to be protected from light during storage and use. Why do we need to do this? Next, we will explain this issue from two aspects.

First, coffee beans need to be protected from sunlight because the ultraviolet rays in the sun can have a negative impact on them. Ultraviolet rays can break down some chemicals in coffee beans, such as oxides and acids. These decomposition products change the flavor and quality of the coffee beans and may cause them to become bitter or unpalatable. In addition, ultraviolet rays can accelerate oxidation reactions, causing coffee beans to lose freshness over long periods of exposure.

Secondly, another reason has been discovered in the research field: light conditions can cause pigment formation reactions (Maillard reactions). When untreated green coffee is exposed to sunlight, the pigment compounds contained in it interact with other components and form compounds with different colors, odors and flavor characteristics. These reactions may cause the flavor of coffee beans to become complex, but may also produce some unpleasant odors and tastes.

In summary, in order to maintain the freshness and quality of coffee beans, we coffee copywriters need to store them away from light. It is best to store coffee beans in a sealed container and place it in a cool, dry place away from direct sunlight. In addition, when buying coffee, we should also choose products that are well packaged and not obviously exposed to sunlight.