Encontrados 6 documentos, a visualizar página 1 de 1
Estudo da quebra de dormência em sementes de piorno [Genista tenera (Jacq. Ex m...
D' Avó, Margarida; Grego, José; Lopes, Maria; Rauter, Amélia; Justino, Jorge; Goulart, MargaridaO piorno [Genista tenera (Jacq. ex Murr.) O. Kuntze] é uma planta endémica da ilha da Madeira usada na medicina popular dado o seu efeito antidiabético. O presente estudo pretende avaliar o efeito da digestão ácida das sementes de piorno com ácido sulfúrico na redução da espessura do tegumento, rijo, da semente, para ultrapassar a dormência das sementes e assim maximizar a taxa de germinação. Um grupo de acesso...
Non-toxic Salvia sclareoides Brot. extracts as a source of functional food ingr...
Justino, Jorge; Rauter, Amélia; Dias, Catarina; Martins, Alice; Branco, Isabel; Goulart, Margarida; Nogueira, José; Neng, Nuno; Silva, FilipaEstudo de produção agronómica de espécis da salvia com vista à avaliação dos seus constituintes para o potencial controlo da doença de Alzaimer ; Salvia sclareoides is an aromatic herb native to Portugal, of which phenolic content (Folin–Ciocalteau method), chemical profile (HPLC/DAD), antioxidant activity (DPPH, β-carotene/linoleic acid assays), acute toxicity (MTT method, adapted for non-adherent cells), gen...
Synthesis of sugars embodying conjugated carbonyl systems and related triazole ...
Xavier, N. M.; Goulart, Margarida; Neves, Ana; Justino, Jorge; Chambert, S.; Rauter, A. P.; Queneau, Y.The synthesis of a series of pyranoid derivatives comprising a conjugated carbonyl function and related triazole derivatives, structurally suitable for bioactivity evaluation, was achieved in few steps starting from readily available carboxymethyl glycoside lactones (CMGL). 3-Enopyranosid-2-uloses were generated by oxidation/elimination of tri-O-acylated 2-hydroxy pyranosides. Subsequent Wittig olefination prov...
Phenolic composition and antioxidant activity of Rocha pear and other pear cult...
Salta, J.; Martins, A.; Santos, R. G.; Neng, N. R.; Nogueira, J. M.; Justino, Jorge; Rauter, A. P.The phenolic profile and the antioxidant activity of Rocha pear, a Portuguese pear cultivar, were determined and compared with the commercially available pear varieties Cornice, Abate, General Leclerc and Passe Crassane. Phenolic composition of the methanolic extracts of these pears was determined by high performance liquid chromatography with diode array detection (HPLC-DAD), while antioxidant activities were ...
Phytochemical profile and anticholinesterase and antimicobial activities of sup...
Silva, Filipa; Martins, A.; Salta, J.; Neng, N. R.; Nogueira, J.; Mira, Delfina; Gaspar, Natália; Justino, Jorge; Grosso, C.; Urieta, J. S.Winter savory Satureja montana is a medicinal herb used in traditional gastronomy for seasoning meats and salads. This study reports a comparison between conventional (hydrodistillation, HID, and Soxhlet extraction, SE) and alternative (supercritical fluid extraction, SFE) extraction methods to assess the best option to obtain bioactive compounds. Two different types of extracts were tested, the volatile (SFE-9...
Alkyl deoxy-arabino-hexopyranosides: synthesis, surface properties, and biologi...
Silva, Filipa; Goulart, Margarida; Justino, Jorge; Neves, Ana; Santos, F.; Caio, J.; Lucas, S.; Newton, A.; Sacoto, D.; Barbosa, E.; Santos, M. S.Octyl and dodecyl glycosides possessing 2-deoxy-arabino-hexopyranoside moieties belonging to the D-and L-series in their alpha- and beta-forms were synthesized by reaction of an acetyl protected glycal with octanol or dodecanol, catalyzed by triphenylphosphine hydrobromide, followed by deprotection. Their surface properties were studied and discussed in terms of the adsorption and aggregation parameters, pC(20)...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||