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The influence of pauses on the fatigue of upper limb muscles during the task of...
Fernandes, Ângela; Santos, Rubim; Rocha, Nuno; Tavares, João ManuelThe aim of this study was to analyze the influence of position and pauses on muscle activity and fatigue during the task of ironing. Ten female participants performed the task of ironing in two different positions (standing and sitting) for 10 min each with a 1-min pause at the end of each task. Muscle activity and fatigue from the upper trapezium, anterior deltoid, and pectoralis major were analyzed using surf...
Chemical composition, antimicrobial, antioxidant and antitumor activity of Thym...
Nikolić, Miloš; Glamočlija, Jasmina; Ferreira, Isabel C.F.R.; Calhelha, Ricardo C.; Fernandes, Ângela; Marković, Tatjana; Marković, DejanAromatic plant species of genus Thymus are important medicinal plants, highly recommended due to a range of therapeutic properties of their essential oils, commonly known as thyme oil: antirheumatic, antiseptic, antispasmodic, antimicrobial, cardiac, carminative, diuretic and expectorant. The oil is also beneficial in boosting the immune system and helps to fight colds, flu, infectious diseases and chills. It i...
Feasibility of electron-beam irradiation to preserve wild dried mushrooms: effe...
Fernandes, Ângela; Barreira, João C.M.; Antonio, Amilcar L.; Oliveira, M.B.P.P.; Martins, Anabela; Ferreira, Isabel C.F.R.Mushrooms are highly perishable matrices and to extend time of consumption they need to be preserved. Since all the available conservation technologies present disadvantages, the combination of two different processes might minimize some of the limitations. Therefore, in the present work, electron-beam irradiation (up to 10 kGy) was applied to dried samples of Boletus edulis and Russula delica, extending previo...
Triacylglycerols profiling as a chemical tool to identify mushrooms submitted t...
Fernandes, Ângela; Barreira, João C.M.; Antonio, Amilcar L.; Martins, Anabela; Ferrreira, Isabel C.F.R.; Oliveira, M.B.P.P.In order to define irradiation treatment as a routine conservation methodology, it is imperative to develop chemometric indicators with the ability to distinguish irradiated from unirradiated foodstuffs. Electron spin resonance, photostimulated luminescence and thermoluminescence methods were employed to monitor radiation-induced markers, as well as different chemical compounds produced from the lipidic fractio...
Involvement of yeast HSP90 isoforms in response to stress and cell death induce...
Silva, Maria Alexandra; Marques, Belém Sampaio; Fernandes, Ângela Margarida Oliveira; Carreto, Laura; Rodrigues, Fernando José dos SantosAcetic acid-induced apoptosis in yeast is accompanied by an impairment of the general protein synthesis machinery, yet paradoxically also by the up-regulation of the two isoforms of the heat shock protein 90 (HSP90) chaperone family, Hsc82p and Hsp82p. Herein, we show that impairment of cap-dependent translation initiation induced by acetic acid is caused by the phosphorylation and inactivation of eIF2 alpha by...
Adequabilidade da energia solar para a produção autónoma de água dessalinizada
Fernandes, Ângela Soares RamosMestrado em Engenharia do Ambiente - Instituto Superior de Agronomia ; The issue of water scarcity has been felt with more intensity in the arid and semi-arid regions. These regions are characterized by climate variability and recurrent droughts, affecting the socio-economic development of these areas. In remote areas with limited water resources, desalination is used as a primary source for drinking water sup...
Study of chemical changes and antioxidant activity variation induced by gamma-i...
Fernandes, Ângela; Barreira, João C.M.; Antonio, Amilcar L.; Santos, Pedro M.P.; Martins, Anabela; Oliveira, M.B.P.P.; Ferreira, Isabel C.F.R.Mushrooms are especially sensitive to senescence, browning, water loss and microbial attack. Furthermore, wild species are characterized for their seasonality, demanding the development of suitable preservation technology. Gamma-irradiation was previously tested in wild Lactarius deliciosus, being verified that its application up to 1 kGy did not imply significant changes in chemical parameters. Herein, the eff...
Antioxidant activity of Macrolepiota procera wild mushroom submitted to differe...
Fernandes, Ângela; Carocho, Márcio; Antonio, Amilcar L.; Oliveira, M.B.P.P.; Martins, Anabela; Ferreira, Isabel C.F.R.Mushrooms are very perishable food products and tend to lose quality immediately after harveStr. Drying is the most common method for preserving mushrooms, freezing is becoming increasingly popular and food irradiation has also been suggested by many researchers as a good conservation technique in order to maintain and increase the food shelf life. In the present work, the effects of different processing techno...
Antioxidant activity of decoctions of Centaurea paniculata L. and Helichrysum s...
Barroso, Marisa; Fernandes, Ângela; Carvalho, Ana Maria; Ferreira, Isabel C.F.R.Ethnobotanical surveys conducted in Northeastern Portugal have documented the use of Decoctions prepared with flowering aerial parts of Centaurea paniculata L. (starthistles, knapweeds; port. escalabiosa) for inflammation and Helichrysum stoechas (L.) Moench (shrubby everlasting; port. douradinha) for the respiratory system and to reduce fever [1], from the Asteraceae botanical family. Although antioxidant prop...
Effects of gamma radiation on chemical composition of processed samples of the ...
Fernandes, Ângela; Antonio, Amilcar L.; Oliveira, M.B.P.P.; Martins, Anabela; Ferreira, Isabel C.F.R.Mushrooms are rapidly perishable and they start deteriorating within a day after harvest. Therefore, fresh mushrooms have to be processed to extend their shelf life for off-season use. Among the various methods employed for preservation, freezing and drying are the most used technologies, but food irradiation has also been suggested by many investigators as a very promising technique for storage.In the present ...
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