Abstract: A coral is washed with purified water or tap water, and a crushed coral is heat-treated. Proteins and other organic matter are incorporated between calcium molecules in the coral skeleton, and the organic matter is decomposed and released as volatile components. In the skeleton from which organic matter is released, a calcium skeleton having a porous structure is formed, and the surface area of pores is increased. A hydrogen gas can be retained in the structure by adsorbing a hydrogen gas to the pores in such a calcium skeleton a porous structure (micropores). The resulting coral powder, with which ions dissolved in water are easily extracted, shows a low oxidation reduction potential when dissolved in water.

Abstract: [OBJECT] The object of the present invention is to provide a method for producing a food supplement in powder form to which hydrogen gas is adsorbed. [SOLUTION] Seashells have a layered structure containing CaCO3 as the principal component before calcination. Conchiolin, a protein characteristic to seashells, is sandwiched between layers to maintain a fixed shape. This protein is not removed under a usual condition. Therefore, it is inferred from analytical results described later as well that a protein-derived hydrogen gas is adsorbed and retained between layers.

Abstract: A coral is washed with purified water or tap water, and a crushed coral is heat-treated. Proteins and other organic matter are incorporated between calcium molecules in the coral skeleton, and the organic matter is decomposed and released as volatile components. In the skeleton from which organic matter is released, a calcium skeleton having a porous structure is formed, and the surface area of pores is increased. A hydrogen gas can be retained in the structure by adsorbing a hydrogen gas to the pores in such a calcium skeleton a porous structure (micropores). The resulting coral powder, with which ions dissolved in water are easily extracted, shows a low oxidation reduction potential when dissolved in water.