FOOD SCIENCE ›› 2013, Vol. 34 ›› Issue (21): 87-90.doi: 10.7506/spkx1002-6630-201321018

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Effect of Chitosan on Physico-chemical Properties of Wheat Starch

SUN Cui-xia,XIONG Liu,SUN Qing-jie*,ZHANG Ya-nan   

  1. College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
  • Received:2012-10-10 Revised:2013-10-11 Online:2013-11-15 Published:2013-10-28
  • Contact: SUN Qing-jie E-mail:phdsun@163.com

Abstract:

In this study we investigated physio-chemical properties of wheat starch including pasting properties, texture
properties, freeze-thaw stability, water absorption index and soluble solid content as a function of the amount of chitosan
added. With increasing chitosan content, the gelatinization temperature and retrogradation rate of wheat starch reduced
slightly from 90.35 to 80.26 ℃ and 46.00% to 29.86%, respectively and the peak viscosity significantly increased from
2587.0 to 4893.2 mPa·s. Texture analyses showed that the hardness of wheat starch gel decreased from 71.93 to 42.77 g
and its elasticity rose gradually with increasing chitosan content. In addition, compared with native wheat starch, the freezethaw
stability was improved and water absorption index and soluble solid content were increased obviously by adding
chitosan, while reducing the syneresis.

Key words: wheat starch, chitosan, physico-chemical properties

CLC Number: