Optimization of the Autoclaving Process for Preparation Lotus Seeds Resistant Starch by Response Surface Methods
Lotus seed resistant starch was prepared by autoclaving.On the basis of single factor tests,the effect of starch concentration,autoclaving temperature,autoclaving time and pH value on the yield of lotus seeds resistant starch were studied.The conditions of preparing resistant starch were optimized with response surface methods.Results revealed that the model was significant,and the optimal conditions were as follows: starch concentration of 30%,autoclaving temperature of 111 ℃,autoclaving time of 10 min,pH6~7.With these optimized conditions,the yield of lotus seeds resistant starch reached 41.89%±1.23%,the same as the prediction value in the model.