| 摘要 |
A process for producing a tea extract of low caffeine content improved in taste and color tone, in which the ratio of nonpolymeric catechins recovered is high. In one mode thereof, there is provided a process for producing a purified tea extract, comprising performing adsorption of a tea extract on a synthetic adsorbent, bringing the synthetic adsorbent into contact with an aqueous solution of organic solvent or basic aqueous solution to thereby attain elution of nonpolymeric catechins, and bringing the eluate into contact with active carbon in an aqueous solution of organic solvent. ® KIPO & WIPO 2009 |
