Encontrados 4 documentos, a visualizar página 1 de 1
Flow cytometry as a tool to assess the effects of gamma radiation on the viabil...
Mesquita, N.; Portugal, A.; Piñar, G.; Loureiro, J.; Coutinho, A. P.; Trovão, J.; Nunes, I.; Botelho, M. L.; Freitas, H.Flow cytometry is often used for viability and vitality assessment in bacteria and yeasts. However, its application to the study of fungal spore development is uncommon, probably due to the difficulties in successfully staining these cells. In the current study, we used flow cytometry for the first time to assess the effects of a disinfection treatment on the survival, growth and metabolic activity of fungal sp...
Efeito da radiação gama em melão fresco minimamente processado
Trigo, M.J; Sousa, M.B.; Sapata, M.; Ferreira, A.; Curado, T.; Andrada, L.; Horta, M.P.; Botelho, M.L.; Veloso, M.G.Beja – Portugal, Março de 2007 ; Encontro ; Os produtos hortofrutícolas estão frequentemente em contacto com o solo, insectos, animais e seres humanos não só durante o desenvolvimento e colheita como por vezes na indústria de processamento. Por essas razões as camadas superfíciais dos produtos podem estar expostas a contaminantes naturais, chegando a atingir 104 a 106 microrganismos por grama. Embora as bacté...
Study on chemical, UV and gamma radiation-induced grafting of 2-hydroxyethyl me...
Casimiro, M. H.; Botelho, M. L.; Leal, J. P.; Gil, M. H.In the present study, 2-hydroxyethyl methacrylate has been grafted onto chitosan by using either chemical initiation, or photo-induction or gamma radiation-induced polymerisation, all under heterogeneous conditions. The evidence of grafting was provided by Fourier transform infrared spectroscopy and thermal analysis. ; http://www.sciencedirect.com/science/article/B6TVT-4CJV8FD-H/1/40853b848ce3f663d431d10fb6e...
Sanitation of chicken eggs by ionizing radiation: functional and nutritional as...
Pinto, Paula; Ribeiro, R.; Sousa, L.; Cabo Verde, S.; Lima, Maria Gabiela; Dinis, Manuela; Santana, Antonieta; Botelho, M. L.Alternative technologies must be developed and implemented considering sanitation and preservation of eggs mainly for risk population. Food irradiation is an alternative to free Salmonella spp. and Campylobacter spp. eggs, as a low dose point to a safety assurance. This study presents the correlation between irradiation doses (0.5 kGy up to 5 kGy at dose rate of 1.0 kGy/h) and some of functional and nutritional...
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