REFERENCES
- Houghton , P.J. 1988 . The biological activity of valerian and related plants . J. Ethnopharmacol , 22 : 121 – 142 . [INFOTRIEVE] [CSA]
- Hänsel , R. and Schulz , J. 1982 . Valerensäuren und Valerenal als Leitstoffe des offizinellen Baldrians . Bestimmung mittels HPLC-Technik. Z. Phytother , 3 : 333 – 340 . [CSA]
- Bos , R. , Woerdenbag , H.J. , Hendriks , H. , Zwaving , J.H. , De Smet , P.A.G.M. , Tittel , G. , shy;Wikström , H.V. and Scheffer , J.J.C. 1996 . Analytical aspects of phytotherapeutic valerian preparations . Phytochem. Anal. , 7 : 143 – 151 . [CSA] [CROSSREF]
- 4. Bos R.; Analytical and Phytochemical Studies on Valerian and Valerian Based Preparations. Ph.D. Thesis. University of Groningen, the Netherlands 1997
- Upton , R. 1999 . “ Commercial sources and handling ” . In Valerian Root, Valeriana officinalis, Analytical, Quality Control and Therapeutic Monograph , Edited by: Upton , R. 6 – 7 . Santa Cruz, CA : American Herbal Pharmacopoeia .
- Foss , R. and Houghton , P.J. 1997 . “ Valeriana products ” . In Valerian. The Genus Valeriana , Edited by: Houghton , P.J. 129 – 137 . Amsterdam : Hardwood Academic Publishers .
- Saito , M. , Yamauchi , Y. and Okuyama , T. 1994 . “ Introduction ” . In Fractionation by Packed-Column SFC and SFE , Edited by: Saito , M. , Yamauchi , Y. and Okuyama , T. 15 New York : VCH Publishers .
- Reverchon , E. 1997 . Supercritical fluid extraction and fractionation of essential oils and related products . J. Supercrit. Fluids , 10 : 1 – 37 . [CSA] [CROSSREF]
- Lee , S. 1988 . Supercritical decaffeination . Tea and Coffee Trade Journal , 160 : 3 – 5 . [CSA]
- King , M.B. and Bott , T.R. 1993 . Extraction of Natural Products using Near-Critical Solvents , 325 Glasgow : Blackie Academic & Professional .
- Stahl , E. and Schütz , E. 1980 . Extraktion labiler Naturstoffe mit überkritischen Gasen. 4. Mitt.: Extraktion der Valepotriate aus Valeriana wallichii . Planta Med. , 40 : 262 – 270 . [CSA]
- Unger , K.K. and Roumeliotis , P. 1983 . On line high-pressure extraction-high-performance liquid chromatography. 1. Equipment design and operation variables . J. Chromatogr. , 282 : 519 – 526 . [CSA] [CROSSREF]
- Morvai-Vitányi , M. and Games , D.E. 1993 . Analysis of supercritical fluid extracts of valerian roots by combined chromatography/mass spectrometry . Acta Horticult , 344 : 386 – 403 . [CSA]
- Shohet , D. , Wills , R.B.H. and Stuart , D.L. 2001 . Valepotriates and valerenic acids in commercial preparations of valerian available in Australia . Pharmazie , 56 : 860 – 863 . [INFOTRIEVE] [CSA]