カラムクロマト法によるウーロン茶浸出液の脱カフェイン
1990 年 64 巻 1 号 p. 35-37
詳細
1990 年 64 巻 1 号 p. 35-37
When 20ml of an oolong tea infusion of 1.2 Brix was absorbed into a column packed with 30g of Kieselguhr powder, 99.8% of the caffeine in the infusion was eluted out with 150ml of methylene chloride. The recovery of tannin in the decaffeinated tea infusion was 95.4% of the tannin content dissolved in the original infusion.
