| 摘要 |
Provided are: a freshness retaining agent that can be obtained by a simple method and exhibits high absorptivity and excellent antibacterial properties; a gas purification device that is configured from the freshness retaining agent; and a gas purification system. The freshness retaining agent, which comprises tea catechins, said tea catechins being adhered to the surface and/or inside of a charcoal powder, and a clay, said clay being interposed among the charcoal powder particles to bond the charcoal powder particles together, exhibits high absorptivity and excellent antibacterial properties. |
