Research on the Process Paraneter of Potato starch Producing Dextrin

[Objective] The research aimed to study the best processing of use potato starch to produce white and yellow dextrin.[Method] The processing was optimized by mono-factor and orthogonal experiments.[Result] The results showed that the optimum reaction condition parameters of producing white dextrin were 0.2 quantity ratio of acid and starch,23% water content,at 120 ℃ for 2 h.And the optimum reaction condition parameters of producing yellow dextrin were 0.5 quantity ratio of acid and starch,20% water content,at 140 ℃ for 2 h.[Conclusion] The research established the optimum reaction condition parameters of producing white and yellow dextrin.