Process for obtaining catechin complexes

Details Process for obtaining catechin complexes Process for obtaining catechin complexes

1991-04-18

1992-04-21

Chan, Nicky

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D31162

Patent

active

051070006

ABSTRACT:
Catechin complexes are obtained from aqueous extracts obtained from plants containing catechins. The extracts are concentrated to a liquor, and the liquor then is extracted with dichloromethane to eliminate pigments from the liquor and to obtain an aqueous phase, which contains catechin complexes, and a dichloromethane phase. The aqueous phase is mixed with purified sea sand to form a paste which is eluted with acetone to obtain the catechin complexes in the acetone. The catechin complexes are recovered from the acetone by evaporating the acetone, and the recovered catechin complexes may be dried to obtain a powder.

REFERENCES:
patent: 4248789 (1981-02-01), Okada
patent: 4613672 (1986-09-01), Hara
patent: 4673530 (1987-06-01), Hara
patent: 4913909 (1990-04-01), Hara et al.

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