mesophilic

Powdered mesophilic cultures, sold in packets, are reasonably priced.

As a bacteriologist, Dr. Arrhenius knew that there were three temperature types of bacteria, those living at low temperatures, the psychrophilic; those living at the temperatures of the human body giving us so much trouble, the mesophilic; those living at high temperatures near geysers, volcanoes etc., the thermophilic.

The temperature 42° C. destroys ordinary water bacteria and inhibits the growth of many ordinary mesophilic bacteria.