Apt Co., Ltd

Kose Corporation

Yusei Miyamoto

Naoki Toshima

Masashi Kajita

Misako Kobayashi

Takao Asano

Noboru Naito

Kumi Kameyama

Akemi Takayama

A scavenger of superoxide anion or nitric oxide comprising finepowder of a transition metal such as platinum. The scavenger is preferably provided as an aqueous solution containing transition metal colloid at a ratio of 1 mM or less per 1,000 ml, and can efficiently eliminate excessive superoxide anions or nitric oxide in vivo.

Superoxide anion decomposing agent

A novel singlet oxygen quencher is disclosed. The quencher consists of a colloidal liquid of a platinum metal group. A composition comprising, as an active ingredient, the singlet oxygen quencher is also disclosed.

Singlet oxygen quencher and composition using the same

A nanocolloidal platinum dispersion comprising nanocolloidal platinum and a polyacrylic acid salt, the nanocolloidal platinum having an average particle size of 1-5 nm, 90% or more of the nanocolloidal platinum having a particle size in a range of 0.1-10 nm, its production method, and a drink containing such a nanocolloidal platinum dispersion.

Platinum nanocolloid solution, process for producing the same and drink containing platinum nanocolloid

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Tokyo, Japan

Yusei Miyamoto