During storage, discoloration of pressurized food products occurred during storage (3 °C) due to enzymatic browning.observed enzymatic browning in HP-treated (379–586 MPa/room temperature/0.033, 5, 10, 15 or 20 min) mango puree. Additions of ascorbic acid and cysteine inhibited the polyphenoloxidase activity resulting in less browning.