Patent ID: 11958672
Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
Field: Chemical engineering (Chemistry)
Classification: CPC B  Y | IPC B

Claim 10:
11. A method for extracting active compounds from a food process waste, the method comprising:
(a) providing a feed slurry comprising (i) a liquid medium comprising water and ethanol and (ii) a solid food process waste dispersed in the liquid medium, wherein:
the water is present in the liquid medium in an amount ranging from 30 wt. % to 70 wt. % relative to total liquid content of the liquid medium,
the ethanol is present in the liquid medium in an amount ranging from 30 wt. % to 70 wt. % relative to total liquid content of the liquid medium,
the solid food process waste comprises (A) cherry pits in powder form, and (B) an active compound selected from the group consisting of polyphenols, flavonoids, o-diphenols, anthocyanins, phenolic acids, and combinations thereof;

(b) subjecting the feed slurry to a temperature in a range of 120° C. to 200° C. at a pressure sufficiently high to prevent boiling of the liquid medium for a time sufficient to extract the active compound from the solid food process waste and into the liquid medium; and
(c) separating solid food process waste from the liquid medium containing the active compound, thereby forming an extract comprising the liquid medium and the active compound dissolved therein.