نتایج جستجو برای: h perforatum
تعداد نتایج: 532574 فیلتر نتایج به سال:
The effect of nano selenium foliar application on some secondary metabolites Hypericum perforatum L.
The antioxidant potentials of a total ethanolic extract of Hypericum perforatum (TE) and fractions were evaluated and correlated with their phenolic contents. The extracts were fully characterised by HPLC–DAD–MS–MS. Kaempferol 3-rutinoside and rutinacetyl were identified for the first time in TE extracts. The free radical-scavenging properties of TE (EC50 1⁄4 21 lg dwb/ml) and fractions were st...
BACKGROUND Hypericum perforatum L. (St. John's wort) is a medicinal plant with pharmacological properties that are antidepressant, anti-inflammatory, antiviral, anti-cancer, and antibacterial. Its major active metabolites are hypericins, hyperforins, and melatonin. However, little genetic information is available for this species, especially that concerning the biosynthetic pathways for active ...
Background & Aim: St John's wort (Hypericum perforatum L.) contains hypericin and hyperforin as the main components of the extract that binds with GABA and sigma opioid receptors. This herb has many pharmacological effects, including analgesic, sedative, soothing, antispasmodic, anticonvulsant, anti-depressant, and anti-bacteria. In this study examined the effect of two concentrations of Hyperi...
Bu çalışmada, önemli tıbbi ve aromatik bitki olan Hypericum türlerinin Rhizoctonia solani üzerine antifungal aktivitesi incelenmiştir. (H. heterophyllum, H. scabrum perforatum) çiçek, gövde yapraklarının bazı çözücülerdeki (metanol, etanol, aseton kloroform) ekstraktlarının %2’lik konsantrasyonu solani’ye karşı test edilmiştir. Ekstraktların aktiviteleri bu patojen ile mücadelede kullanılan sen...
The present study was investigated the effects of two elicitors methyl jasmonate (0, 125, 250 and 500 µM) and chitosan (0, 50, 150 and 250 mg L-1) on shoot and callus growth of Iranian Hypericum perforatumL. in vitro cultures in separate experiments. The experiment was done in the base of completely randomized design with five replications and five explants in each replication. Methyl jasmonate...
گونه Hypericum از جنس‌های مهم گیاهان دارویی محسوب می‌شود. در حال حاضر در ایران 17 گونه گیاه علفی، چندساله و درختچه‌ای هیپریکوم (گل‌راعی) وجود دارد که سه گونه آن انحصاری ایران هستند. این تحقیق جهت بررسی میزان ترکیب هیپریسین در 9 گونه گل‌راعی انجام شد. پس از جمع‌آوری و آماده‌سازی گیاه (جدا کردن گل و برگ) اقدام به تهیه عصاره آن در دو مرحله با حلال‌های کلروفرم و متانول به‌وسیله دستگاه سوکسله گردید ...
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