Extraction Pectin from Blood Orange Peel with Enzyme

Blood orange peel was used as experimental materials. Extraction conditions of pectin from blood orange peel, such as cellulase dosage, solid-liquid ratio, pH, time and temperature were studied. The extraction technology was optimized by orthogonal experimentation on the basis of a series of single-factor experiments. The optimal conditions of extraction were obtained as follows: the amount of 0.3 % cellulase, solid-liquid ratio 1 ∶ 15(g/mL), pH 4.5, temperature 50 ℃, extraction time 4 h. Pectin yield can reach 10.9 % under the best conditions.