Efficiency of Foam Fractionation for the Enrichment of Nonpolar Compounds from Aqueous Extracts of Plant Materials

Marlène Backleh-Sohrt,† Perihan Ekici,† Guenter Leupold,† and Harun Parlar*†‡§
Technical University of Munich, Department of Chemical-Technical Analysis and Chemical Food Technology, Weihenstephaner Steig 23, D-85354 Freising-Weihenstephan, Germany, Research Center Weihenstephan for Brewing and Food Quality, Alte Akademie 3, D-85354 Freising-Weihenstephan, Germany, and Adalbert-Raps Research Center, Am Forum 3, D-85350 Freising-Weihenstephan, Germany
J. Nat. Prod., 2005, 68 (9), pp 1386–1389
DOI: 10.1021/np049743e
Publication Date (Web): August 24, 2005
Copyright © 2005 American Chemical Society and American Society of Pharmacognosy
†

 Technical University of Munich, Chemical-Technical Analysis and Chemical Food Technology.

,
*

 To whom correspondence should be addressed. Tel:  +49 (8161) 71-3283. Fax:  +49 (8161) 71-4418. E-mail:  parlar@wzw.tum.de.

,
‡

 Research Center Weihenstephan for Brewing and Food Quality.

,
§

 Adalbert-Raps Research Center.

Abstract

Abstract Image

Biologically active compounds from several useful plants were enriched using foam fractionation, a separatory method belonging to the adsorptive bubble separation (ABS). Nonpolar humulones (1−6) from Pilsener beer, curcuminoids (7−9) from turmeric, and carotenoids (16 and 17) from carrot juice were enriched fast and quantitatively, depending on the process parameters, whereas more polar compounds such as catechins from green tea (11, 12, 14, and 15) and naringin (18) and hesperidin (19) from orange and grapefruit juices could not be enriched.

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History

  • Published In Issue September 23, 2005
  • Received August 4, 2004

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