FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (13): 77-80.doi: 10.7506/spkx1002-6630-200913017

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Effects of Heat-moisture Treatment on Physico-chemical Properties of Corn Starch

WANG Shu-sheng1,WANG Qiang2,SU Yu-chun1,*   

  1. 1.College of Life Science, Jilin Agricultural University, Changchun 130118, China;
    2. Biological Institute of Jilin Province, Changchun 130012, China
  • Received:2008-10-24 Revised:2009-01-15 Online:2009-07-01 Published:2010-12-29
  • Contact: WANG Shu-sheng E-mail:walter1975@126.com

Abstract:

This study investigated the property changes of corn starches containing 10%, 18%, 25% and 30% moisture before and after being treated by oven and high-pressure sterilizer at 121 ℃ for 5 h. The results indicated that after heat-moisture treatment, pits appeared in the center of starch particles, the crystallization degree of particles increased, the gelatinization temperature rose, and the paste viscosity decreased. Under the same conditions, the high-pressure sterilizer treatment exhibited more significant effects on starch properties than the oven treatment. Altogether, the heat-moisture treatment can obviously affect the properties of corn starch.

Key words: corn starch, heat-moisture treatment, properties

CLC Number: