Patent ID: 11931391
Assignee: CARGILL, INCORPORATED
Field: Chemical engineering (Chemistry)
Classification: CPC A  B  C | IPC A  B

Claim 26:
27. A method for isolating a caffeoylquinic composition from yerba biomass, the method comprising:
i) contacting yerba mate biomass with a first aqueous composition comprising less than 30% (C1-C4)alkanol or free of (C1-C4)alkanol to obtain an initial extract;
ii) chromatographing the initial extract on a weak anion exchange stationary phase;
iii) eluting the weak anion exchange stationary phase with an aqueous ethanol composition comprising 10% to 50% ethanol by volume, to obtain a first eluent; and
iv) eluting the stationary phase with an aqueous acidified ethanol composition comprising 60% to 80% ethanol by volume, to obtain the caffeoylquinic composition comprising monocaffeoylquinic acids, dicaffeoylquinic acids, and salts of the foregoing;
wherein the caffeoylquinic composition comprises less than 1% caffeine based on dry weight of the caffeoylquinic composition.