食品科学 ›› 2008, Vol. 29 ›› Issue (12): 153-155.

• 基础研究 • 上一篇    下一篇

交联微孔甘薯淀粉理化特性研究

 谢涛, 李英   

  1. 湖南工程学院化学化工系; 湖南工程学院图书馆;
  • 出版日期:2008-12-15 发布日期:2011-12-08

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

摘要: 以三氯氧磷为交联剂、耐高温α-淀粉酶-糖化酶混合酶为酶解剂,采用交联-酶解法制备得交联微孔甘薯淀粉。FT-IR红外光谱证明,交联反应发生在淀粉颗粒的-OH、-CO基团上,为酯化交联,结构强度明显增强。此种交联微孔甘薯淀粉较之原淀粉,吸水率、吸油率、抗老化性、抗剪切性、抗酸性和冻融稳定性均有较大提高。

关键词: 交联微孔淀粉, 甘薯, 理化性能

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