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Effects of gamma irradiation on chemical composition and antioxidant potential ...
Ferrreira, Ângela; Barreira, João C.M.; Antonio, Amilcar L.; Oliveira, M.B.P.P.; Martins, Anabela; Ferreira, Isabel C.F.R.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...
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...
Métodos Preditivos de Metastização Ganglionar Adicional em Cancro da Mama com G...
Nabais, C; Figueiredo, J; Viana Lopes, P; Martins, M; Matias, R; Araújo, RObjectivos As recomendações para a realização de linfadenectomia axilar nos doentes com cancro da mama em estádio precoce e sujeitas a biópsia de gânglio sentinela com presença de macrometástase foram recentemente actualizadas, baseadas nos últimos estudos publicados (Z0011 e IBCSG 23-01). Mantém-se, no entanto, alguma controvérsia na decisão de não realização de cirurgia radical axilar nos doentes com gânglio ...
Genes, crianças e pediatras: Doença de Menkes
Correia, J.; Rios, M.; Ferreira, P.; Martins, E.; Bandeira, A.A male newborn, presenting hipotonia and posterior parietal bossing, developed, in the first 12 hours of life, refusal to feed and hypoglycaemia. A cranial ultrasound, skull X-ray and CT scan revealed an occipital and parietal fracture with an underlying haematoma and extensive extracranial soft-tissue swelling. He was submitted to surgical drainage. After 24 hours: new intracerebral bleeding. At the age of two...
Influence of heat pipe operating temperature on exhaust heat thermoelectric gen...
Brito, F. P.; Martins, Jorge; Gonçalves, L. M.; Antunes, Nuno; Sousa, DiogoIncreasingly stringent targets on energy efficiency and emissions, as well as growing vehicle electrification are making attractive the electric recovery of the energy normally wasted through the tailpipe of Internal Combustion Engines. Recent developments in thermoelectrics (TE) may soon make them a viable solution for such applications. This team has been exploring the potential of using TE modules in combin...
MOHID as a tool to evaluate the impact of water discharge from dams on the adve...
Morais, P.; Martins, Flávio Augusto Bastos da Cruz; Chícharo, Alexandra; Lopes, J.; Chícharo, LuísThe impoundment of rivers by dams is the biggest direct anthropogenic impact on the hydrological cycle. The utility of dams, as providers of water for human consumption, irrigation and electrical production, is undeniable. However, the price to pay, weighting benefits versus ecological impacts caused by dams, is enormous and often questionable. The deleterious ecological impacts caused by dams are detected at t...
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...
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 ...
Gamma irradiation preserves palmitoleic acid, a bioactive omega-7 unsaturated f...
Fernandes, Ângela; Antonio, Amilcar L.; Oliveira, M.B.P.P.; Martins, Anabela; Ferreira, Isabel C.F.R.Obesity is a growing problem around the world, representing a metabolic disorder that is associated with many severe lifestyles related diseases including card iovascular disease, diabetes, hypertension, hyperlipidemia, and hyperuricemia [1]. Omega-? palmitoleic acid is a natural component found mainly in vegetables, nuts, and seeds. Studies have demonstrated that monounsaturated fatty acids suppressed appetite...
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