[Objective]The aim was to optimize the extraction process for isolate protein from red adzuki bean by response surface methodology.[Method]We selected the factors and levels on the basis of single factor experiment,and designed the experiment with 4 factors and 3 levels based on the principle of Box-Behnken's design to optimize the extraction process for isolate protein from red adzuki bean.[Result]The effect of the factors of extraction pH,solid-liquid ratio,temperature and time on extraction ratio was in ...