References
- Milligan , S. R. , Kalita , J. C. , Heyerick , A. , Rong , H. , De Cooman , L. and De Keukeleire , D. 1999 . Identification of a potent phytoestrogen in hops (Humulus lupulus L.) and beer . J. Clin. Endocrinol. Metab. , 84 ( 6 ) : 2249 – 2252 .
- Stevens , J. F. and Page , J. E. 2004 . Xanthohumol and related prenylflavonoids from hops and beer: to your good health . Phytochemistry , 65 : 1317 – 1330 .
- Blumenthal , M. , ed. 2000 . Herbal Medicine: Expanded Commission E Monographs , 1st Ed. Newton, MA : Integrative Medicine Communications .
- Flückiger , F. A. and Hanbury , D. 1879 . “ Strobili Humuli ” . In Pharmacographia , 2nd Ed. 551 – 555 . London : Macmillan & Co. .
- Schulz , V. , Hänsel , R. and Tyler , V. E. 2001 . “ Hop strobiles and hop glands ” . In Rational Phytotherapy , 4th Ed. 98 – 99 . Berlin, , Germany : Springer‐Verlag .
- Yang , F. , Quan , J. , You , Zhang T. and Ito , Y. 1998 . Multidimensional counter‐current chromatographic system and its application . J. Chromatogr. A , 803 ( 1+2 ) : 298 – 301 .
- Tian , G. , Zhang , T. , Zhang , Y. and Ito , Y. 2002 . Separation of tanshinones from Salvia miltiorrhiza Bunge by multidimensional counter‐current chromatography . J. Chromatogr. A , 945 : 281 – 285 .
- Yuan , L. M. , Chen , X. X. , Ai , P. , Zi , M. , Wu , P. and Li , Z. Y. 2001 . Versatile two‐phase solvent system for anthraquinone prefractionation by high speed countercurrent chromatography . J. Liq. Chromatogr. & Rel. Technol. , 24 ( 19 ) : 2961 – 2970 .
- Yuan , L. M. , Ai , P. , Chen , X. X. , Zi , M. , Wu , P. , Li , Z. Y. and Chen , Y. G. 2002 . Versatile two‐phase solvent system for flavonoid prefractionation by high‐speed countercurrent chromatography . J. Liq. Chromatogr. & Rel. Technol. , 25 ( 6 ) : 889 – 897 .
- Coll , J. C. and Bowden , B. F. 1989 . The application of vacuum liquid chromatography to the separation of terpene mixtures . J. Nat. Prod. , 49 : 934 – 936 .
- Ito , Y. and Conway , W. D. 1996 . “ High‐Speed Countercurrent Chromatography ” . In Chemical Analysis. 132 Edited by: Winefordner , J. D. 454 New York : Wiley .
- Wang‐Fan , W. , Kusters , E. , Mak , C.‐P. and Wang , Y. 2000 . Application of centrifugal counter‐current chromatography to the separation of macrolide antibiotic analogues. II. Determination of partition coefficients in comparison with the shake‐flask method . J. Liq. Chromatogr. & Rel. Technol. , 25 ( 15–16 ) : 1365 – 1376 .
- Chadwick , L. R. , Nikolic , D. , Burdette , J. , Overk , C. , Bolton , J. L. , van Breeman , R. B. , Fröhlich , R. , Fong , H. H.S. , Farnsworth , N. R. and Pauli , G. F. 2004 . Estrogens and Congeners from Spent Hops (Humulus lupulus L.) . J. Nat. Prod. , 67 ( 12 ) : 2024 – 2032 .