Usually, the color of beer bottles is brown or green. The main purpose of using brown or green beer bottles is to make people feel relaxed and harmonious. On the other hand, these colors can well block light and reduce photosynthesis, so as to maintain the quality of beer. If beer is not protected from light, it will produce an odor called sunlight odor when exposed to sunlight for a long time. The formation of sunlight odor is caused by the decomposition of bitter components in beer. Therefore, beer is particularly sensitive to sunlight. Using green or brown glass bottles can effectively prevent the generation of this odor.
