FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (12): 153-155.

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Study on Physico-chemical Properties of Crosslinked Microporous Sweet Potato Starch

 XIE  Tao, LI  Ying   

  1. 1.Department of Chemical Engineering,Hunan Institute of Engineering,Xiangtan 411104,China;2.Library of Hunan Institute of Engineering,Xiangtan 411104,China
  • Online:2008-12-15 Published:2011-12-08

Abstract: With POCl3 and mixture solution of α-amylase and glucoamylase as reaction reagents,the crosslinked porous sweet potato starch was made by firstly crosslinking and then enzymolysis. FT-IR spectra demonstrated that the hydroxyl groups in starch granules are esterfied and crosslinked,thus strengthening the structure of crosslinked porous sweet potato starch. Compared with the native starch,there is a larger improvement in the water and oil absorption rates,anti-aging property,shearing resistance,acid resistance and freeze-thaw stability of the crosslinked porous sweet potato starch,respectively.

Key words: crosslinked micro porous starch, sweet potato, physico-chemical property