Abstract:
The effect of pressure on growth and reproductive capacity of bacteria in raw fresh milk is studied in range of hydrostatic pressure from 20 to 120 MPa. The result is following: At room temperature and 20 MPa the raw fresh milk was pressed for 5 minutes then it was return to normal pressure, the physiologic activity of bacteria in the raw fresh milk have a striking reduction, this effect is the pressure effect in no situ. The effect of pressure up to 120 MPa has not obvious difference from that of 20 MPa.