Study on Characteristics of Rhizoma Alismatis Starch Harvested from Jiangxi Province

Abstract

Abstract: Some physicochemical properties of Rhizoma Alismatis starch were investigated,including the shape and size of granule,retrogradation,blue value,clarity,enzymatic digestibility and viscosity.Differential scanning calorimetry(DSC) was used to determine the thermal behaviors of the starch.Results showed that most granules are oval waist shape and only few ones are spherical.The range of the starch particle size is 6 to 20 μm.The value of retrogradation is minimal when the starch concentration is 4% at pH 8.0.The gelatinization temperature range is 56.09 to 81.89 to 100.80 ℃ and the enthalpy(ΔH) is 217.1162 J/g.The starch,compared with cassava starch and corn starch,is of lower blue value and clarity as well as higher enzymatic digestibility.The increase of starch viscosity depending on temperature consists of two phases.

Key words: Rhizoma Alismatis, starch, physicochemical property

YI Xing, ZHANG Jian-Ping, XIAO Xiao-Nian. Study on Characteristics of Rhizoma Alismatis Starch Harvested from Jiangxi Province[J]. FOOD SCIENCE, 2008, 29(11): 102-105.

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Study on Characteristics of Rhizoma Alismatis Starch Harvested from Jiangxi Province

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