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Items: 1 to 20 of 132

2.

Simultaneous determination of the predominant hyperforins and hypericins in St. John's Wort (Hypericum perforatum L.) by liquid chromatography.

Gray DE, Rottinghaus GE, Garrett HE, Pallardy SG, Gray DE, Rottinghaus GE, Garrett HE, Pallardy SG.

J AOAC Int. 2000 Jul-Aug;83(4):944-9.

PMID:
10995119
3.
4.

Quantitative analysis of the major constituents of St John's wort with HPLC-ESI-MS.

Chandrasekera DH, Welham KJ, Ashton D, Middleton R, Heinrich M.

J Pharm Pharmacol. 2005 Dec;57(12):1645-52.

PMID:
16354409
5.
6.

Development of a high-performance liquid chromatographic method with electrochemical detection for the determination of hyperforin.

Rückert U, Eggenreich K, Wintersteiger R, Wurglics M, Likussar W, Michelitsch A.

J Chromatogr A. 2004 Jul 2;1041(1-2):181-5.

PMID:
15281267
7.

Determination of total hypericins in St. John's wort and herbal medicinal products.

Anyzewska M, Kowalczuk A, Łozak A, Jabłczyńska R, Fijałek Z.

Acta Pol Pharm. 2010 Nov-Dec;67(6):586-92.

8.

Comparative evaluation of St. John's wort from different Italian regions.

Pietta P, Gardana C, Pietta A.

Farmaco. 2001 May-Jul;56(5-7):491-6.

PMID:
11482784
9.

Liquid chromatographic determination of St. John's wort components in functional foods.

de Jager LS, Perfetti GA, Diachenko GW.

J AOAC Int. 2004 Sep-Oct;87(5):1042-8.

PMID:
15493659
10.
11.

Batch-to-batch reproducibility of St. John's wort preparations.

Wurglics M, Westerhoff K, Kaunzinger A, Wilke A, Baumeister A, Dressman J, Schubert-Zsilovecz M.

Pharmacopsychiatry. 2001 Jul;34 Suppl 1:S152-6.

PMID:
11518067
13.

Comparison of German St. John's wort products according to hyperforin and total hypericin content.

Wurglics M, Westerhoff K, Kaunzinger A, Wilke A, Baumeister A, Dressman J, Schubert-Zsilavecz M.

J Am Pharm Assoc (Wash). 2001 Jul-Aug;41(4):560-6.

PMID:
11486982
14.

Determining hyperforin and hypericin content in eight brands of St. John's wort.

de los Reyes GC, Koda RT.

Am J Health Syst Pharm. 2002 Mar 15;59(6):545-7. No abstract available.

PMID:
11908248
16.
17.

A high-performance liquid chromatography with electrochemical detection for the determination of total hypericin in extracts of St. John's Wort.

Rückert U, Eggenreich K, Likussar W, Wintersteiger R, Michelitsch A.

Phytochem Anal. 2006 May-Jun;17(3):162-7.

PMID:
16749423
18.

Effect of eluent pH on the HPLC-UV analysis of hyperforin from St. John's Wort (Hypericum perforatum L.).

Fourneron JD, Naït-Si Y.

Phytochem Anal. 2006 Mar-Apr;17(2):71-7.

PMID:
16634282
19.

Simultaneous determination of hypericin and hyperforin in human plasma with liquid chromatography-tandem mass spectrometry.

Riedel KD, Rieger K, Martin-Facklam M, Mikus G, Haefeli WE, Burhenne J.

J Chromatogr B Analyt Technol Biomed Life Sci. 2004 Dec 25;813(1-2):27-33.

PMID:
15556512
20.

Functional induction and de-induction of P-glycoprotein by St. John's wort and its ingredients in a human colon adenocarcinoma cell line.

Tian R, Koyabu N, Morimoto S, Shoyama Y, Ohtani H, Sawada Y.

Drug Metab Dispos. 2005 Apr;33(4):547-54. Epub 2005 Jan 7.

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