Fig. 2 shows the microbial growth in vacuum-packed HHP-treated meat (at 300 and 600 MPa) and fresh meat samples (FM) during
refrigerated storage at 4 °C for a) mesophilic bacteria and b) lactic acid bacteria.
Frist line is fresh meat without high pressure treatment ,second line is fresh meat submitted to HHP 300Mpa, third line is fresh meat submitted to HHP 600Mpa
From the fig2 the high hydrostatic pressure treatment applied guaranteed the microbiological innocuity of the products. Based on these findings, it can be concluded that at 300 MPa the samples were microbiologically stable during 4 weeks and at 600 MPa during 6 weeks.