Moisture of samples was determined according to AOAC Official Method 935.25 (AOAC, 1995): approximately 5 g of Kougelhopf,placed in a previously weighed container were dried in a forced convection oven (WTB binder Amilabo, Germany) at 103 C until they reached a constant weight (24 h). The samples were cooled
in a desiccator and weighed by an analytical balance (sensitivity 0.01 mg).