2.3. High pressure processing treatment
High pressure processing (HPP) treatments were carried out in a
laboratory-scale pressure unit (Mini Food lab FPG5620, Stansted
Fluid Power Ltd., Essex, UK), where heat transfer fluid (a mixture of
ethanol and castor oil) continuously circulated through a refrigerated
liquid chiller (Proline RP 855, Lauda, Germany) to maintain at
4 C. Fig. 1 illustrates the HPP lab unit.