METHOD OF OBTAINING ANTOCIANADIN FROM PLANT RAW MATERIALS Russian patent published in 2018 - IPC C09B61/00 A23L33/105 A23L19/12 A23L5/40 

FIELD: technological processes.

SUBSTANCE: invention relates to food, pharmaceutical and cosmetic industries, in particular to production of dry, purified anthocyanin substances with high antioxidant properties. Method of producing anthocyanins involves extraction of anthocyanadin-containing oil meal of violet potato, obtained after extracting starch with a mixture of aqueous solution of 70 % ethyl alcohol and 0.5–1 % hydrochloric acid, when the ratio of the extractant to the meal 10–15:1. Next, three-fold treatment of the mixture of meal is carried out with extractant in vibro-cavitation homogenizer and a tank with an ultrasonic generator. During first pass through vibrocavitation homogenizer and container with ultrasonic generator, meal is fed in amount of 5–7 wt. % of the flow rate of the extractant. With the second pass another 3–5 wt. % of the flow rate of supplied extractant is added and with the third pass through vibrocavitation homogenizer and container with ultrasonic generator the remaining 2–3 wt. % is input. After aforementioned threefold treatment, the mixture is sent for filtration, oil meal is removed, and the extract that has been purified from the solid phase is sent for evaporation under vacuum. Condensed after evaporation, extract is subjected to freeze-drying to obtain target product.

EFFECT: invention allows to increase degree of extraction of anthocyanins per unit mass of raw materials and to obtain herbal remedies used in aknephascopia, increased visual loads, degenerative diseases of the retina, as well as in complex therapy of initial stages of hypertension and atherosclerosis.

4 cl, 1 dwg, 2 ex