Abstract: A culture apparatus includes a fine water generating cartridge disposed in an air passage by which moisture is supplied into a culture space and that goes into a moisture absorption state in which moisture in air is adsorbed on conductive polymer films by reducing the temperature of a base material having the conductive polymer films, and goes into a moisture release state in which fine water with a particle size of 50 nanometers or less is released from the moisture adsorbed on the conductive polymer films by increasing the temperature of the base material; and a control part performing moisture absorption control bringing the fine water generating cartridge into the moisture absorption state, and moisture release control releasing the fine water by bringing the fine water generating cartridge into the moisture release state supplied into the culture space, by irradiating the subject with the fine water.

Abstract: The present invention provides a complex of a metal reducing substance and a culture medium component, which is produced in the culturing process of reducing bacteria and the use thereof. The complex of the present invention is a complex produced in the culturing process of reducing bacteria and a compound of a metal reducing substance and a culture medium component. The complex is an adsorbent for quickly and efficiently adsorbing ionic substances present in a solution, and also functions as a reducing agent for reducing specific precious metal ions or platinum-group metal ions.