Optimization of Extraction Technology of Pectin from Orange Peel by Acid Method

In order to explore the best pretreatment method of pectin raw materials, four methods of tissue crushing, repeated freezing and thawing, rapid thermal quenching and compound phosphate treatment were compared with tangerine peel as raw materials. The results show that compound phosphate treatment is the best method to break tissue cells, and the best conditions are: temperature 90℃, standing for 24 hours, and the ratio of compound phosphate is 3% sodium phosphate, 0.9% disodium hydrogen phosphate, 0.3% sodium pyrophosphate and 0.6.