METHOD OF PRODUCING PECTIN Russian patent published in 2024 - IPC C08B37/06 

FIELD: food industry.

SUBSTANCE: invention relates to food and processing industry. Method of producing pectin involves washing apple pomace with acidified water, then extracting the pomace with a solution of nitric acid for 2 hours at temperature of 40 °C with subsequent separation of the extract from apple pomace by centrifugation and collection of the extract. Further, this extract is directed through a membrane unit and concentrated to dry substances of 10-15% in a vacuum evaporator unit. Then pH in the obtained concentrate is normalized to 3-4 using sodium phosphate and the degree of esterification is standardized using the enzyme pectinesterase with activity of 250 units/g in amount of 0.1% to 0.2% of the weight of concentrate for 20-120 minutes to obtain degree of esterification from 20 to 68%. After that, pectin is precipitated with alcohol, pectin is separated from liquid, pectin is dried, ground, sieved and packed.

EFFECT: invention enables to obtain pectin with a given degree of esterification.

1 cl, 3 ex