| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a purified chlorogenic acid-containing formulation useful in production of chlorogenic acid-containing beverages which rarely become cloudy even in an acid region. <P>SOLUTION: The method for producing a purified chlorogenic acid-containing formulation includes: a first step of dispersing/dissolving a starting chlorogenic acid-containing composition in a mixed solvent consisting of an organic solvent and water in the presence of acid clay or activated clay; a second step of removing precipitate formed in the dispersion/solution obtained in the first step; a third step of adjusting the solution obtained in the second step to chlorogenic acid concentration of 1.5-10 mass% and pH of 2-4; and a fourth step of separating precipitate formed in the adjusted solution obtained in the third step. When the chlorogenic acid-containing formulation, which is prepared by the above method and includes chlorogenic acid at concentration of 10-80 mass% in a solid component, is adjusted to chlorogenic acid concentration of 0.6 mass% and pH of 2-4, turbidity of the solution is ≤65 NTU, and a mass ratio ((K+Na)/chlorogenic acid) of the total of potassium and sodium to the chlorogenic acid is ≤0.18. <P>COPYRIGHT: (C)2013,JPO&INPIT |
