A Box-Behnken RSM design was used to derivemathematical models for describing the effects of theindependent variables on the dependent variables(Myers et al., 2009). The three independent variableswere frying temperature (X1) (70, 80 and 90 C), fryingtime (X2) (35, 50 and 65 min) and MD level (X3) (40%,55% and 70%). Three levels of each of the threeindependent variables were chosen for this study. Thedependent variables determined were moisture content(Y1), colour change (Y2), browning index (Y3) andbreaking force (Y4).
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