2011•Advanced materials researchRequires access

Impacts of Acid Treatment on the Characteristics of Native Corn Starch Granules

Xin Jin, Shuan Qing Hou, Xiao Xu Sha, Yu Liang

Abstract

Native corn starches were acid-treated at 53 °C for hours in HCl aqueous solution. The peak temperature (Tp) and heat of gelatinization (ΔHgel) before and after treatments were determined. The average particle size, TG and viscosity were measured. The results showed that the viscosity of corn starch decreased from 630mPa to 4.6mPa after acid treatment for 6h. The average particle size decreased and ΔHgel decreased obviously after acid modification.

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Key concepts: Corn starch, Viscosity, Starch, Particle size, Aqueous solution, Chemistry, Food science, Maize starch