High pressure treatment criteria considering egg protein coagulation were investigated as a xrst step of processing optimization for high
pressure treatment of liquid whole egg (LWE). The degree of egg protein coagulation as a result of pressure treatment is presented in
term of the excess work of structure breakdown using steady shear analysis. No coagulation could be identixed at 100 and 150 MPa until
3 600 s at 5 and 25 3C. With increasing pressure under isothermal conditions the starting point of coagulation (lag phase) was shortened
and the rate of coagulation was increased. At 45 3C, coagulation was detected at 100 and 150 MPa. At pressures exceeding 250 MPa,
coagulation occurred almost instantaneously, without any lag phase. The equivalent lines of pressure induced coagulation are provided
at three diwerent temperatures (5, 25 and 45 3C). Below the line of *W"5.0 kJ/m3
, rheological properties of processed LWE were
comparable to that of fresh LWE and it is desirable to conduct high pressure treatment under this criteria