U.S. Develops Bottle Caps for Preventing Oxidation of Fresh Beer

Anti-fresh beer bottle cap. The California company produces caps that prevent beer from oxidizing. The caps contain a hemoglobin-like substance that works like a molecule that acts similar to hemoglobin of the lungs, and can be tightly attached to any one that meets it. Oxygen molecules. The hemoglobin contained in the beer cap can extract the oxygen mixed in the beer bottle so that the beer will not lose its freshness due to oxidation.