BUCKWHEAT HUSK FOOD PIGMENT-DYE AND METHOD FOR ITS PRODUCTION Russian patent published in 2021 - IPC C09B61/00 C09B67/04 

FIELD: food industry.

SUBSTANCE: invention can be used in the food industry. The buckwheat husk food pigment-dye includes melanin and is a mechanocomposite of the following composition passed through a metal trap, wt%: hydrolyzing component - 1-5, air-dry crushed buckwheat husk - the rest. To obtain a food pigment-dye, air-dry crushed buckwheat husk is mixed with a hydrolyzing component in the ratio of (95-99):(1-5) by weight, respectively. The resulting mixture in an air-dry state undergoes mechanochemical treatment in an activator mill, and then it is passed through a metal catcher. As an activator mill, flow-through ball vibro-centrifugal, elliptical centrifugal and roller centrifugal mills are used, which provide an acceleration of the acting bodies of 80-250 m/s² and a residence time in the processing zone of 0.5-2.5 minutes. Adjustment of the cooling system of activator mills ensures product output with a temperature not exceeding 70°C.

EFFECT: invention makes it possible to practically completely utilize buckwheat husk into a useful product – a food pigment-dye, simplifying its production by eliminating liquid-phase stages and drying.

11 cl, 16 ex