| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a non-polymeric catechin-containing composition suppressed in production of precipitation even if preserving for a long period. <P>SOLUTION: This method for producing the refined green tea extract containing 36-99 wt.% of non-polymeric catechin in solid content comprises adding a mixed solvent of an organic solvent and water with the ratio of (0:100)-(97:3) to tea extract containing 10-90 wt.% of non-polymeric catechin, subjecting the product to contact treatment with activated carbon and/or acid clay, or activated clay, adding to the product 5-10,000 ppm of phytic acid or its salt based on the total weight of the green tea extract, organic solvent and water, and separating turbid components precipitating in the mixed liquid from the product. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
