|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||426/3303 ; 426/435 ; 426/597|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 22 인용 특허 : 4|
A process for isolating and purifying green tea solids in good yield is described. The process uses food approved solvents and provides flavanols with less green/grassy flavor. A less bitter and less astringent flavanol pectin complex is also prepared using pectins, cellulose, gums or sugars.
A process for isolating flavanols from natural sources comprising: (1) extracting a flavanol source with hot water to remove the flavanols; (2) deflavoring the flavanols by extracting the aqueous solution with a mixture of hexane and a low molecular weight alcohol wherein the ratio of hexane to alcohol is from about 10:1 to about 1.5:1; (3) extracting the deflavored aqueous phase with ethyl acetate; and (4) recovering the flavanols from the ethyl acetate.