Study on the Extraction Technology of Carrot Pomace Dietary Fiber

The extraction of the carrot pomace dietary fiber was researched in this article. The soluble dietary fiber(CRSDF) was extracted by hydrochloric acid. The insoluble dietary fiber (CRIDF) was made that the starch was removed by amylase. By doing each factor and orthogonal experiment,with the process rate of production as main index,the optimum process of acid-treatment method and enzyme-method were investigated. The results showed that the optimal conditions for the acid-treatment were the ratio of stuff to solvent 1:9,pH 2.5,temperature 85℃,taking time 75min; the optimal conditions for the alpha-amylase enzymatic hydrolysis were enzyme concentration 0.6%,temperature 70℃,pH 5.5,taking time 80min. the CRSDF extracting ratio was 7.3% ,the CRIDF extracting ratio was 69.12%,the swollen volume was 5.3mL/g,the water holding capacity was4.3g/g.