Effect of high-power microwave on indicator bacteria for sterilization.

According to the superiority sterilization, a specially-designed microwave disinfector using high-power microwave energy was made. A series of sterilizing experiments have been made to determine the effect of microwave energy on several typical indicator bacteria such as Bacillus subtilis var. niger, Bacillus stearothermophilus, Bacillus pumilus E601, Staphylococcus aureus, Bacillus cereus. Under the conditions of different sterilization duration and unequal intensity of microwave power irradiation onto the bacteria, a useful result of killing bacteria has been observed, i.e., the Bacillus subtilis can be considered as an optimum indicator bacterium for microwave sterilization.