| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a quercetin-containing composition obtained by increasing the content of the quercetin by converting a quercetin glycoside to the quercetin in a high efficiency, and a method for producing a food and beverage containing the same and the quercetin-containing composition. <P>SOLUTION: This quercetin-containing composition is produced by heating the quercetin glycoside or a material containing the same to convert it to quercetin simply in a short time in a good efficiency to improve the quercetin content. Also, an extract of the quercetin-containing composition is produced by extracting the quercetin-containing composition with water and/or an alcohol. <P>COPYRIGHT: (C)2007,JPO&INPIT |
