Comparison of the quality characteristics of abalone processed by high-pressure sub-zero temperature and pressure-shift freezing

Pressure-shift freezing has been recognized as the most rapid freezing technique. Currently, high pressure low temperature (HPLT) processing is adopted by means of long time storage of biomaterials. Nevertheless, one of the problem to apply these technique in actual industry is that the materials have to be kept at normally 200 MPa at which the materials can cooled down to around − 20 °C. Based on this study, it is possible to reduce the processing pressure level (~ 100 MPa) which would provide a practical advantage of HPLT processing as well as industrial applicability.