Decaffeination of Oolong Tea Infusion by Kieselguhr Column Chromatography
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 i...
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| Veröffentlicht in: | Nippon Nōgeikagaku Kaishi 1990/01/15, Vol.64(1), pp.35-37 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng ; jpn |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | 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. |
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| ISSN: | 0002-1407 1883-6844 |
| DOI: | 10.1271/nogeikagaku1924.64.35 |