and is mainly driven by the storage temperature, lower temperature storage being the only way to minimise degradation rate (Trammell,Dalsis & Malone, 1986). When oxygen is present the contribution of anaerobic degradation to the total vitamin C loss is small compared to aerobic degradation(Villota & Hawkes, 1992). Several studies were made to determine the kinetic parameters of thermal degradation of ascorbic acid in food systems under conventional heating conditions (Table 1).