5 documents found, page 1 of 1
Burnout and coping strategies among Professors during COVID-19: Portugal-Brazil...
Pinto, Ana; Carvalho, Carla; Rodriguez, Susana; Simões, Ana; Carvalhais, Carlos; Gonçalves, Fernando J.; Santos, JoanaThe global pandemic experienced in recent years led Higher Education Institutions (HEIs) to close their facilities to safeguard the health and safety of the academic community. This reality overloaded professors in terms of work, often leading them to the limit of exhaustion and impacting on their performance, quality of life and well-being, taking, in many cases, to burnout. This study aims to identify and cha...
Evaluation of phenolic compounds and antioxidant activity of blueberries and mo...
Guiné, Raquel; Matos, Susana; Gonçalves, Fernando J.; Costa, Daniela; Mendes, MateusThe study aimed at evaluating the influence of different production conditions, conservation and extraction procedures on the total phenolic compounds and antioxidant activity of blueberries by DPPH and ABTS methods. The production factors considered were origin, altitude of the farm location and age of the bushes. The conservation conditions considered were freezing as opposed to the fresh product. The extract...
Interaction of wine mannoproteins and arabinogalactans with anthocyanins
Gonçalves, Fernando J.; Coimbra, Manuel A.; Fernandes, Pedro; Wessel, Dulcineia Ferreira; Cardoso, Susana M.; Rocha, Sílvia M.Wine polymeric material (WPM), which includes polysaccharides, proteins, and polyphenolic compounds, interacts with anthocyanins. To determine the contribution of polysaccharides in these interactions, the diffusion performance of anthocyanins along a dialysis membrane was determined in the presence and absence of isolated mannoproteins (MP) and arabinogalactans (AG) from WPM. Furthermore, to estimate the exten...
Artificial neural network modelling of the antioxidant activity and phenolic co...
Guiné, Raquel P. F.; Barroca, Maria João; Gonçalves, Fernando J.; Alves, Mariana; Oliveira, Solange; Mendes, MateusBananas (cv. Musa nana and Musa cavendishii) fresh and dried by hot air at 50 and 70 °C and lyophilisation were analysed for phenolic contents and antioxidant activity. All samples were subject to six extractions (three with methanol followed by three with acetone/water solution). The experimental data served to train a neural network adequate to describe the experimental observations for both output variables ...
Genotoxic endpoints in the earthworms sub-lethal assay to evaluate natural soil...
Lourenço, Joana I.; Pereira, Ruth O.; Silva, Ana C.; Morgado, José M.; Carvalho, Fernando P.; Oliveira, João M.; Malta, Margarida P.; Paiva, Artur A.Eisenia andrei was exposed, for 56 days, to a contaminated soil from an abandoned uranium mine and to the natural reference soil LUFA 2.2. The organisms were sampled after 0, 1, 2, 7, 14 and 56 days of exposure, to assess metals bioaccumulation, coelomocytes DNA integrity and cytotoxicity. Radionuclides bioaccumulation and growth were also determined at 0 h, 14 and 56 days of exposure. Results have shown the bi...