Effects of ultra-high pressure on microorganism in bovine coloctrum

The ultra-high pressure not only can kill microorganism, but also effectively preserve most nutrition in the bovine colostrums.The effects of UHP on microbiological quantities and staphyloccocuc aureus in bovine coloctrum were researched with three parameters in this experiment, including pressure, time and temperature.The experimental results indicated that the fatality rate of microbiological quantities and staphyloccocuc aureus could reach 100% when the pressure was 450MPa, the temperature≥40℃, the pressure holding time≥25min;the similar levels of inactivation occurred at 500MPa, the temperature≥40℃, the time≥15min and 550MPa, the temperature≥30℃, the time≥25min or the temperature≥35℃, the time≥15min.So the UHP technology was adopted to treat bovine coloctrum by us, which could kill the microorganisms and ensure biosecurity.