abstract |
The present invention provides a novel technique for storing a liquid pharmaceutical preparation safely and stably. Nano bubble water according to the present invention is produced in the presence of a surfactant, a hydrophilic resin and/or an electrolyte, and contains nano bubbles at a concentration of 2.0 × 10 8 particles/mL or more. The nano bubble water has an excellent antibacterial activity, and can be used suitably as a base material for a liquid pharmaceutical preparation having safe and stable storage properties. |