Abstract: The extraction of pectin from persimmon peel with the aid of cellulase was optimized by orthogonal array design on the basis of one-factor-at-at-a-time. The optimum extraction parameters were identified as follows: extraction temperature of 45 ℃, enzyme dosage of 3.0 mg/g, pH 4.0, material-to-liquid ratio of 1:35 and extraction time of 2 h, and the resulting extraction rate of pectin was 8.87%. This method has the advantages of simplicity and convenience and can therefore be used for the extraction and determination of pectin.

Key words: persimmon peel, pectin, cellulase, extraction process