Moving protein and fat contained in oil-tea camellia seed shell with by enzymolysis and chemistry,purer dietary fiber was produced. Four factors on the extraction efficiency of dietary fiber were studied as follows:enzyme dosage,NaOH density,extraction temperature and extraction time.Combined with its physical and chemical character,the best condition of extraction of dietary fiber was confirmed:enzyme dosage 0.3%,NaOH density 6%,extraction temperature 80℃and extraction time 90min.Under this condition,extra...