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Bioassays against pinewood nematode: assessment of a suitable dilution agent an...
Barbosa, P.; Faria, J.M.S.; Mendes, M.D.; Dias, L.S.; Tinoco, M.T.; Barroso, J.G.; Pedro, L.G.; Figueiredo, A.C.; Mota, M.Acetone was investigated and found to be an appropriate alternative to Triton X-100 as a solvent of essential oils in bioassays aimed to investigate their effects on pinewood nematode (Bursaphelenchus xylophilus) mortality. Therefore it was used as dilution agent to screen the effectiveness of fifty two essential oils against this pest. Thirteen essential oils were highly effective, resulting in more than 90% p...
Nematicidal activity of essential oils and volatiles derived from Portuguese ar...
Barbosa, P.; Lima, A.S.; Vieira, P.; Dias, L.S.; Tinoco, M.T.; Barroso, J.G.; Pedro, L.G.; Figueiredo, A.C.; Mota, M.Twenty seven essential oils, isolated from plants representing 11 families of Portuguese flora, were screened for their nematicidal activity against the pinewood nematode (PWN), Bursaphelenchus xylophilus. The essential oils were isolated by hydrodistillation and the volatiles by distillation-extraction, and both were analysed by GC and GC-MS. High nematicidal activity was achieved with essential oils from Cham...
Breathing disorders in congestive heart failure: gender, etiology and mortality
Silva,R.S.; Figueiredo,A.C.; Mady,C.; Lorenzi-Filho,G.We investigated the relationship between sleep-disordered breathing (SDB) and Cheyne-Stokes respiration (CSR) while awake as well as mortality. Eighty-nine consecutive outpatients (29 females) with congestive heart failure (CHF; left ventricular ejection fraction, LVEF <45%) were prospectively evaluated. The presence of SDB and of CSR while awake before sleep onset was investigated by polysomnography. SDB preva...
Essential oils of flowers of Citrus sinensis and Citrus clementina cultivated i...
Miguel, Maria Graça; Dandlen, S.; Figueiredo, A. C.; Barroso, J. G.; Pedro, L. G.; Duarte, Amílcar; Faísca, J.The essential oils, isolated by hydrodistillation, from the flowers of different cultivars of Citrus sinensis (L.) Osbeck (Cs) and Citrus clementina Hort. Ex Tan. (Cc) collected at different harvesting times, were analyzed by GC and GC-MS. All the samples studied afforded yellowish oil which yields ranged from 0.05 to 0.08 % (v/w). The monoterpene fraction dominated both oils (66-91%), being the monoterpene hyd...
Plantas medicinais da Península de Setúbal. Contribuição para o conhecimento da...
Santos, S.; Correia, A.I.D; Figueiredo, A.C.; Dias, L.S.; Dias, A.S.A Península de Setúbal engloba ambientes muito distintos, na medida em que, por um lado, alberga cidades de grande/média e pequena dimensão, intimamente relacionadas com a capital, e por outro, áreas bem preservadas que integram parques naturais ou reservas/zonas protegidas. Assim sendo, os principais objectivos deste estudo prenderam-se com: 1) a caracterização dos remédios vegetais usados por populações disti...
The use of herbal remedies in urban and rural areas of the Setúbal Peninsula (P...
Santos, S.; Correia, A.I.D; Figueiredo, A.C.; Dias, L.S.; Dias, A.S.The Setúbal Peninsula is a highly diverse area where some large-medium and small cities are concentrated and where well preserved areas integrating a natural park or reserved and protected zones can also be found. The main goals of this study were the characterization of the herbal remedies used by different populations, namely that of urban and rural areas, to compare and understand these practices, namely how...
Composition and variability of the essential oils of the leaves and berries fro...
Cavaleiro, C.; Salgueiro, L. R.; Cunha, A. P. da; Figueiredo, A. C.; Barroso, J. G.; Bighelli, A.; Casanova, J.The compositions of the essential oils isolated from leaves and berries of Juniperus navicularis Gand., an endemic species from Portugal, were investigated by GC and GC-MS. Oils from representative samples of populations as well as from individual samples were studied. The oils consisted mainly of monoterpene hydrocarbons (67.1-88.0% and 61.7% for leaf and berry oils, respectively). [alpha]-Pinene (6.3-38.0%), ...
Chemical polymorphism of the essential oils from populations of Thymus caespiti...
Pereira, S. I.; Santos, P. A. G.; Barroso, J. G.; Figueiredo, A. C.; Pedro, L. G.; Salgueiro, L. R.; Deans, S. G.; Scheffer, J. J. C.The compositions of the essential oils isolated from the aerial parts of 11 populations of Thymus caespititius collected during the flowering phase on Pico, Faial and Graciosa (Azores) were studied by GC and GC-MS. The monoterpene fraction was dominant in all the oils analysed (55-90%) and consisted mainly of oxygen-containing compounds (44-79%). Sesquiterpenes represented an important fraction of the oils from...
Chemical polymorphism of the essential oils from populations of Thymus caespiti...
Pereira, S. I.; Santos, P. A. G.; Barroso, J. G.; Figueiredo, A. C.; Pedro, L. G.; Salgueiro, L. R.; Deans, S. G.; Scheffer, J. J. C.The compositions of the essential oils obtained from ten populations of Thymus caespititius grown on S. Jorge (Azores) were studied by GC and GC-MS. All the oils analysed were dominated by their monoterpene fraction (69-91%). The sesquiterpene fraction was rather small (4-17%) and consisted mainly of oxygen-containing compounds (3-13%). Enantiomeric ratio of sabinene and [alpha]-terpineol was investigated in th...
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