2009•Cereals & OilsRequires access
Preparation process of potato oxidized starch with orthogonal experiment
Nong Ke-liang
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Abstract
Preparation process of potato oxidized starch with orthogonal experiment was studied in this paper.Oxidized starch was prepared by dry method,using potato starch as material.The effects of reaction time,reaction temperature,catalyst amount,oxidant amount and system water amount on the oxidation reaction of potato starch were investigated respectively by using carboxyl content of potato oxidized starch as evaluating parameter.The technique conditions were optimized by orthogonal experiment as follow:the reaction time 3.5h,the reaction temperature 60℃,the quality score of FeSO4 in the starch 0.025%,the mole ration of H2O2 to the starch 0.285,the system water 24%.The carboxyl group content of potato oxidized starch was 0.530% under this preparation condition.