Optimization of Parameters for Preparation of Corn Retrograded Starch by Microwave-Enzyme Method

Abstract

Abstract: The processing parameters of microwave-enzyme method,used to produce corn retrograded starch,were optimized by respond surface methodology.The optirnal hydrolyzing parameters by a-amylase are 85℃for 10 min,the ratio of liquid to solid 4:1,α-amylase 1.68 U/g starch;the optimal pasting parameters with microwave are 1.26 kW 92℃for 1min;the optimal dealing parameters with pullulanase are 53.31℃for 3.26 h,pullulanase 4.13 NPUN/g starch.The productivity of resistant starch reaches 13.45% with the optimal processing method.

Key words: resistant starch, microwave-enzyme method, response surface methodology(RSM), Box-Behnken design

ZHANG Hua-Dong, ZHANG Miao, SHEN Xiao-Ping, LU Xiao-Li. Optimization of Parameters for Preparation of Corn Retrograded Starch by Microwave-Enzyme Method[J]. FOOD SCIENCE, 2007, 28(4): 237-240.

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Optimization of Parameters for Preparation of Corn Retrograded Starch by Microwave-Enzyme Method

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