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Viscosity Properties of Acetylated Distarch Adipate Waxy Potato Starch Paste

Luo Fa-xing Huang Qiang Zhang Le-xing Li Lin(Engineering Research Center of Starch and Plant Protein Deep Processing of the Ministry of Education,South China University of Technology,Guangzhou 510640,Guangdong,China)  
The rheological and viscosity properties as well as the acid and salt tolerances of acetylated distarch adipate(ADA) waxy potato starch paste were investigated by using the Brabender viscographer and the rotary viscosimeter.The results show that,after the acetylated distarch adipate modification,the setout gelatinization temperature of ADA waxy potato starch paste increases from 64.7 ℃ to 67.3 ℃,while the peak viscosity and the relative breakdown strength decrease respectively from 919 BU to 652 BU and from 76.4% to 27.6%.Moreover,it is found that the viscosity stability,shear tolerance,retrogradation property and acid and salt tolerances of the paste are all improved in varying degrees.
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