It was previously demonstrated that gamma irradiation was the processing technology with the highest capacity to maintain the chemical profile of fresh Macrolepiota procera wild mushroom, when compared to freeze-dried or oven-dried samples. Herein, it was aimed to evaluate gamma irradiation effects on processed samples. Chemical composition and antioxidant potential of irradiated (0.5 and 1 kGy) fresh, frozen a...
Coprinopsis atramentaria is a wild edible mushroom whose methanolic extract revealed a marked antioxidant activity; p-hydroxybenzoic (HA), p-coumaric (CoA) and cinnamic (CA) acids were identified in the extract. In the present work, the cytotoxicity of C. atramentaria extract, previously identified organic acids and their synthesized derivatives (methylated compounds and protected glucuronides) was evaluated. A...
The chemical composition and the antioxidant potential of three species of wild mushrooms from Northeastern Portugal, namely Agaricus albertii, Agaricus urinascens var. excellens, and Pleurotus eryngii, were compared. Standard procedures were followed in the nutritional value evaluation, while chromatographic procedures were used to analyze free sugars, fatty acids, tocopherols, phenolic compounds, and organic ...
Methanolic extract of Suillus luteus was previously shown to inhibit proliferation of colon cancer cells with mutant p53. The effect of the same extract was further investigated here in a wildtype (wt) p53 non-small cell lung cancer cell line. Treatment with the extract increased the levels of p-H2A.X and the number of p-H2A.X foci/cell, indicating a possible increase in deoxyribonucleic acid (DNA) damage. Neve...
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...
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...
A perceção da riqueza subjacente a esta metodologia de trabalho torna exequível perspetivar intervenções de gestão de cuidados de saúde, específicas à realidade do contexto institucional dos Cuidados de Saúde Primários, visando otimizar a qualidade dos serviços e aumentar a satisfação e motivação dos profissionais do cuidar. Conhecer as perceções dos enfermeiros sobre a metodologia do cuidar: Humanitude; elabor...
A satisfação dos profissionais, é uma área complexa e de difícil avaliação mas, ao mesmo tempo, incontornável. Esta afeta um grande número de comportamentos na organização e contribui para os níveis de bem-estar dos trabalhadores e no caso de colaboradores organizacionais pode bem influenciar o seu desempenho e produtividade (George& Jones, 2004, citados por Pereira, 2010). Avaliar a satisfação e motivação prof...
Trabalho de Projeto submetido como requisito parcial para obtenção do grau de Mestre em Psicologia Social e Organizacional ; Historicamente, a Psicologia preocupou-se em investigar patologias, negligenciado os aspetos saudáveis dos seres humanos. Mas, a partir de 1998, assumindo a presidência da American Psychological Association, Seligman iniciou movimento denominado Psicologia Positiva, que visa oferecer nov...
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