Search results for "hypericum"
showing 10 items of 39 documents
Prove di coltivazione di Hypericum perforatum L. in ambiente mediterraneo
2014
La richiesta di Hypericum perforatum da parte dell'industria farmaceutica e cosmetica, sia come droga grezza che come derivati di prima trasformazione, in questi ultimi anni si sta incrementando mentre la sua disponibilità commerciale appare ancora piuttosto limitata. La possibilità di introduzione negli ordinamenti colturali mediterranei delle diverse specie di Hypericum è divenuta dunque potenzialmente assai interessante, ma richiede ancora la definizione di numerosi aspetti relativi alla risposta delle specie alla coltivazione, sia in pieno campo che in vaso, soprattutto quando questa viene condotta in ambienti diversi da quelli di vegetazione naturale. L'approfondimento di tali aspetti …
Spiroterpenoids from Hypericum reflexum
1993
Abstract Two new spiroterpenoids, hyperireflexolide A and B, were isolated from Hypericum reflexum . Their structures and stereochemistry were established by spectroscopic methods, including 13 C NMR, DEPT and HMQC, and X-ray data.
Divšķautņu asinszāle farmaceitiskajā aprūpē
2020
Mūsdienās augu valsts līdzekļi ir plaši izmantoti visā pasaulē, tai skaitā arī Latvijā. Divšķautņu asinszāle aug Latvijas teritorijā un tās saturošie preparāti ir pieejami Latvijas aptiekās, kaut arī ne tik plašā sortimenā. Pēdējos gados, divšķautņu asinszāles produktu patēriņš ievērojami palielinājas un šobrīd šīs augs ir viens no visvairāk patērētajiem augiem pasaulē. Paaugstinātā stresa līmeņa dēļ mūsu laikos liels cilvēku skaits cieš no depresijas un asinszāles antidepresīvais efekts un arī citas īpašības tiek plaši pētītas. Darba mērķis bija noteikt cik labi farmācijas speciālisti un divšķautņu asinszāles saturošo preparātu lietotāji (aptiekas klienti) ir informēti par šī auga īpašībām…
Hypericum scruglii sp. nov. (Guttiferae) from Sardinia
2010
A new species of Hypericum (Guttiferae) from Sardinia, H. scruglii, is described and illustrated. It occurs on damp soil, near springs or streams with freshwater, where it grows with numerous hygrophytes. This diploid species (2n � 16) belongs to the sect. Adenosepalum and is closely related to H. tomentosum, a species widespread in the west Mediterranean region. During field investigations in Sardinia, very peculiar populations of Hypericum L. were found occuring on damp soils and limited to calcareous substrates. These plants showed a close morphological and ecological relationship with H. tomentosum L., a species belonging to sect. Adenosepalum Spach. As emphasized by Robson (1996), the …
Teratogenicity and Developmental Toxicity of Herbal Products
2017
Developmental toxicology and research in teratogenicity focus on xenobiotic substances that damage embryos and fetuses and lead to death, growth retardation, and/or malformation of offspring. While considerable information has been acquired about synthetic drugs and environmental xenobiotics, much less is known about the teratogenicity of herbal products. In this chapter we report on some major topics of developmental toxicity and teratogenicity, and discuss the safety of a few selected medicinal herbs in this context, i.e., Artemisia annua L., Caulophyllum thalictroides (L.) Michx., Echinacea spec,. Glycyrrhiza spec., herbs derived from Chinese medicine, Hypericum perforatum L., Panax gins…
Factors Affecting Polyphenol Biosynthesis in Wild and Field Grown St. John’s Wort (Hypericum perforatum L. Hypericaceae/Guttiferae)
2009
The increasing diffusion of herbal products is posing new questions: why are products so often different in their composition and efficacy? Which approach is more suitable to increase the biochemical productivity of medicinal plants with large-scale, low-cost solutions? Can the phytochemical profile of a medicinal plant be modulated in order to increase the accumulation of its most valuable constituents? Will polyphenol-rich medicinal crops ever be traded as commodities? Providing a proactive answer to such questions is an extremely hard task, due to the large number of variables involved: intraspecific chemodiversity, plant breeding, ontogenetic stage, post-harvest handling, biotic and abi…
Prove di coltivazione di Iperico (Hypericum perforatum L.) in ambiente semi-arido
2010
L’Iperico (Hypericum perforatum L.; Fam. Hypericaceae) è una specie erbacea perenne largamente diffusa allo stato spontaneo, insieme alle altre specie congeneri, all’interno degli ambienti mediterranei. Secondo la Farmacopea Europea (IV Ed.), la droga dell’Iperico è costituita dalla parte aerea e dalle sommità fiorite essiccate, che trovano utilizzazione in diverse aree del mondo per il trattamento di un gran numero di disturbi interni ed esterni. Nelle aree mediterranee, grazie al suo marcato effetto lenitivo del dolore e alla proprietà di stimolare la formazione di nuovo tessuto, la principale utilizzazione tradizionale dell’Iperico è tradizionalmente rivolta al trattamento esterno di ust…
Leaf and stem anatomy in eight Hypericum species (Clusiaceae).
2013
Abstract - Foliar micromorphology, epicuticular wax morphology and anatomical features of leaves and stem, particularly secondary xylem, were examined with light microscopy, general and histochemical staining and scanning electron microscopy in eight Hypericum species. Outer tegument tissue and type of secondary xylem are determining characteristics. Secondary xylem is ring-porous in H. perforatum, H. perfoliatum, H. tetrapterum, H. triquetrifolium, H. androsaemum and H. hircinum. In H. aegypticum and H. pubescens xylem is diffuse-porous, which is considered to be a more primitive type. These characteristics may be considered an additional criterion for species identification.
Valorizzazione produttiva della biodiversità in ambiente mediterraneo: il genere Hypericum
2014
Una conoscenza approfondita delle specie appartenenti al genere Hypericum, finalizzata alla loro introduzione negli ordinamenti colturali come specie di interesse industriale e/o ornamentale, comporta la dettagliata descrizione dei parametri morfologici e ambientali delle piante nei loro siti di vegetazione spontanea, e l’accertamento delle loro caratteristiche fitochimiche. Negli anni 2012-2013 è stata svolta un’attività di ricognizione a tale scopo. In Sicilia le perlustrazioni svolte hanno portato all'individuazione di 23 accessioni di H. perforatum, H. perfoliatum, H. pubescens, H. tetrapterum e H. calycinum; numerose altre se ne sono aggiunte, provenienti dall’appennino tosco-romagnolo…
Hypericum spp.: A Resource from Wild Mediterranean Flora for the Treatment of Mild Depression
2015
The present volume of the series, "Bioactive Phytochemicals: Perspectives for Modern Medicine - Vol. 3" with 21 original research and review articles written by eminent scientists and researchers from within India and abroad has been compiled, and the notable amongst which include: Lupeol as Anticancer Drug; Bioactive Phytochemicals as Phytomedicine and its Pharmacology and Toxicology of Genus Capparis; Artesunate with its Antimalarial Profile; Fractionation and Structural Characterization of Antimicrobials from Woodfordia fruticosa Kurz.; Exocyclic-Nitrogen Alkaloids in Herbalism as a Source of New Drugs; Naringin, a Citrus Flavonone Inhibits the Benzo[a]pyrene (BaP)-Induced Forestomach Ca…