METHOD OF PRODUCING LOW-MOLECULAR PECTIN Russian patent published in 2012 - IPC C08B37/06 

FIELD: chemistry.

SUBSTANCE: invention relates to methods of producing low-molecular pectin. The method involves hydrolysis of pectin in aqueous solution of mineral acid while heating. Further, the liquid phase is separated from the insoluble pectin residue and neutralised to pH lower than 4.0. Low-molecular pectin hydrolysis products are extracted through precipitation thereof using a water-miscible organic solvent. After precipitation, the obtained low-molecular pectin hydrolysis products are dried. The starting material used for hydrolysis is low-etherified pectin with etherification degree of not more than 30%. Hydrolysis is carried out in cycles. The duration of one cycle is calculated using a given formula. After separation from the pectin residue, the liquid phase undergoes further hydrolysis. The duration of one cycle of additional hydrolysis is calculated using a formula.

EFFECT: invention enables to obtain low-molecular pectin without process loss of material and also significantly ensures destruction of oligogalacturonides, thus increasing ultimate output of the product.

2 cl, 6 ex