METHOD FOR PRODUCING FOOD ADDITIVE - PECTIN FROM VEGETABLE RAW MATERIALS

摘要

FIELD: food industry.SUBSTANCE: invention relates to the food industry. Method for production of a food additive - pectin from vegetable raw material includes washing raw material with water, acid hydrolysis, separation of solution, deposition and drying of the target product. Initial raw material is represented by cranberries. Hydrolysis is carried out with 0.03 n citric acid solution at ratio of weight of insoluble dry substances of raw materials to weight of acid solution from 1:18 to 1:22, temperature 98–100 °C for 105–125 minutes. Then the obtained pectin-containing solution is evaporated till mass fraction of pectin is equal to 4–6 %. Pectin is precipitated from solution in three volumes of 96 % ethyl alcohol.EFFECT: invention allows to produce pectin satisfying requirements for food additive E440, considerably increase output of target product due to more complete hydrolysis of protopectin.1 cl, 2 dwg, 3 ex