Aqueous extracts of Acalypha langinia, Buddleia scordioides, Hylocereus undatus, Tecoma stans showed protective activity against the increased (both chloroform and histamine) skin vascular permeability in rabbits. The protective effect, measured as the reduction in leakage of Evans blue, were 90.2, 37.3, 43.5 and 69.3% respectively a dose of 250 mg/kg. Astianthus viminalis, showed only a 12.6% ...

The leaves of Eucalyptus have multiple biological activities such as antimicrobial, antiseptic, antioxidant, and antifungal. A Soxhlet extraction, SLE, HD were used to obtain extracts from the six species, E. globulus, oblicua, pavaflora, camaldulensis, viminalis, nitens, study their antioxidant capacity. Solvents acetone, dichloromethane, ethanol, hexane, methanol, water how polarity influence...

Five genotypes of Short Rotation Coppice (SRC) willow: ‘Beagle’ ((S. viminalis ‘L810203’ x ‘L81102’) ‘Astrid’ male parent unknown), ‘Olof’ (S. ‘Bowles Hybrid’) schwerinii ‘L79069’) ‘L78195’ ‘L78101’) ‘Orm’) ‘Bjorn’). ‘Ashton Stott’ (S.viminalis S.dasyclados ‘Korso’, ‘Tora’ ‘Orm’), and ‘Torhild’ ‘79,069’) viminalis) S. ‘L78101’)) ‘Tora’) ((S.viminalis were grown in large mono-plots or within plo...

BACKGROUND & OBJECTIVES Due to ever-growing insecticide resistance in mosquito vectors and environmental contamination by synthetic insecticides, plants may be a source of alternative agents for mosquito control. Therefore, the present investigation involved the determination of larvicidal and phytochemical properties of Callistemon rigidus leaf extracts against Anopheles gambiae, Aedes aegypti...

This study was conducted to determine the relationship in Hoagland’s hydroponic culture medium between fluoride at levels of 190, 380, 570, and 950 mg F/ L and the ability of different clones of basket willow (Salix viminalis L.: ‘Bjor’, ‘Jorr’, and ‘Tora’) to take up F. After 14 days of exposure to NaF in the medium, the roots and leaves of seedlings of these three varieties of basket willow w...

Changes in levels of abscisic acid (ABA) and cytokinin activity in the xylem sap of willow (Salix viminalis, L.) were followed throughout two growth cycles.Growth in spring was preceded by decreasing levels of ABA and an increase in cytokinin activity. The onset of dormancy was associated with low levels of cytokinins and high contents of ABA. A second peak of ABA was found in July which was no...

The protective antioxidative effect of the phenolic extract (PE) isolated from Salix viminalis pyrolysis derived bio-oil was shown in vitro on the Chinese hamster ovary (CHO) cells exposed to hydrogen peroxide (H2O2). Cells pretreated with 0.05 μg/ml PE after exposure to different concentrations of H2O2 (300-900 μM) showed up to 25 % higher viability than the unpretreated ones. The antioxidativ...