Seasonal variation in hypericin content of Hypericum pecforatum L. (St. John's Wort)

Phytochemistry

Volumn 56, Issue 5, 2001, Pages 437-441

  Southwell, Ian A ^a   Bourke, Christopher A ^b  

^a NSW AGRICULTURE   (Australia)

^b NSW DEPARTMENT OF PRIMARY INDUSTRIES   (Australia)

Author keywords

Clusiaceae; Hypericin; Hypericum perforatum; Pasture; Pseudohypericin; Seasonal variation; Soxhlet extraction; St. John's Wort; Toxicity; UV Vis spectrometry

Indexed keywords

HYPERICIN; HYPERICUM; HYPERICUM PERFORATUM; PERYLENE; PSEUDOHYPERICIN;

ARTICLE; BIOTYPOLOGY; CHEMICAL COMPOSITION; NONHUMAN; PLANT LEAF; SEASON; SEASONAL VARIATION; SPECTROPHOTOMETRY; SUMMER; WINTER;

HYPERICUM; PERYLENE; PLANT LEAVES; PLANTS, MEDICINAL; SEASONS; SPECTROPHOTOMETRY;

CLUSIACEAE; HYPERICUM; HYPERICUM PERFORATUM;

EID: 0035831382     PISSN: 00319422     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0031-9422(00)00411-8     Document Type: Article

References (27)

1. Chemistry of the coccoidea. II Condensed polycyclic pigments from two Australian pseudococcids (Hemiptera)
2. Sunlight associated hyperthermia as a consistent and rapidly developing clinical sign in sheep intoxicated by St John's wort (Hypericum perforatum)
3. Control of Hypericum perforatum L. (St John's Wort) by a grazing management system that uses Merino sheep
4. Seasonal hypericin variation in the poisonous weed St John's wort compared with hypericin tolerance levels in merino sheep
5. Identification by high-performance liquid chromatography-diode array detection-mass spectrometry and quantification by high performance liquid chromatography-UV absorbance detection of active constituents of Hypericum perforatum
6. Significance of genetic and environmental aspects in the field cultivation of Hypericum perforatum
7. The biology of Australian weeds, 13. Hypericum perforatum L
8. The variability of the hypericin content in the regenerants of Hypericum perforatum
9. Anatomical and ultrastructural observations in Hypericum perforatum L. leaves
10. Hypericism
11. Austrovenetin, the principal pigment of the toadstool, Dermocyhe austroveneta
12. Antiviral activities of hypericin
13. Production of hypericin, pseudohypericin and flavonoids in cell cultures, of various Hypericum species and their chemotypes
14. Isolation and activity of the photodynamic pigment hypericin
15. High dosed St John's wort extract for treatment of mild and moderate depressions
16. Studies of the mechanism of action of the antiretroviral agents hypericin and pseudohypericin
17. Essential oil production: A discussion of influencing factors
18. Antiviral activity of the photoactive plant pigment hypericin
19. Etude chimiotaxonomique du genre Hypericum, I. Repartition de l'hypericine
20. High performance liquid chromatography electrospray mass spectrometry of Hypericum perforatum extracts
21. Therapeutic agents with dramatic antiretroviral activity and little toxic effect at effective doses: Aromatic polycyclic diones hypericin and pseudohypericin
22. Proline analogues in Melalenca species: Response of Melalenca lanceolata and M. uncinata to water stress and salinity
23. Determination of naphthodianthrones in plant extracts from Hypericum perforatum L. by liquid chromatography-electrospray mass spectrometry
24. Hypericin content variation in Hypericum perforatum in Australia