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Effect of Microwave Treatment on the Properties of Cationic Starch

ZHANG Hui, YIN Xunlan, HOU Hanxue, DONG Haizhou*   

  1. College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
  • Online:2016-08-15 Published:2016-08-30

Abstract:

In order to improve the characteristics of cationic starch, the molecular structure and paste properties cationic
starches prepared by semi-dry process alone and combined with microwave irradiation were comparatively evaluated in this
study. The results indicated that the degradation of amylopectin in cationic starch prepared by microwave/semi-dry process
was more obvious than in cationic starch prepared by semi-dry process. Electron micrographs showed no significant change
in the shape of semi-dry cationic starch, except for the rough and ruptured surface of granules. However, deformation and
pits were observed in the microwave/semi-dry cationic starch granules. Compared with cationic starch prepared by semidry
process, cationic starch prepared by microwave/semi-dry process had higher solubility, transmittance and freeze-thaw
stability, and lower peak viscosity and final viscosity.

Key words: cationic starch, microwave, molecular weight distribution, viscosity, starch properties

CLC Number: