Browsing by Author "Santos, C."
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- Are nurses uniforms a reservoir for Methicillin-resistant Staphylococcus aureus? Lessons to be learned from PortugalPublication . Fernandes, E.; Costa, P.; Graveto, J.; Santos, C.; Osório, N.; Alarico, S.; Albano, Helena
- Are there any Pinus pinaster trees resistant to Bursaphelenchus xylophilus? Studies implemented in Portugal to address this questionPublication . Costa, R.; Ribeiro, P.; Evaristo, I.; Ribeiro, B.; Aguiar, A.; Carrasquinho, I.; Santos, C.; Vasconcelos, Marta W.
- Aroma precursors of grapes: contribution of variety and vineyard traning system to port wine aromaPublication . Sousa, L.; Moreira, N.; Queiroz, J.; Oliveira, M.B.; Santos, C.; Oliveira, C.; Ferreira, A. C. Silva; Pinho, P. Guedes deIn order to evaluate the influence of the vine training system in the composition in terpenes, norisoprenoids and their precursors (carotenoids and glycosidic molecules), these compounds were quantified in grapes and Port wines belonging to two varieties: Touriga Nacional and Touriga Franca from Douro Region. The double cordon LYS 2/3 system was compared with the traditional method, the vertical shoot positioning VSP system. Touriga Nacional grapes and wines have higher contents in carotenoids, free and glycosylated fractions of terpenic and norisoprenoids compounds than Touriga Franca. In general, LYS 2/3 training system produced grapes and wines with high content in glycosylated fractions of terpenes and nor-isoprenoids, being more appropriate to the production of Port wines, which are submitted to an aging process.
- Aroma precursors of grapes: contribution of variety and vineyard traning system to port wine aromaPublication . Sousa, L.; Moreira, N.; Queiroz, J.; Oliveira, M. B.; Santos, C.; Oliveira, C.; Ferreira, A. C. Silva; Pinho, P. Guedes de
- Caracterização química e sensorial de vinhos provenientes de castas nobres da região do DãoPublication . Guedes, P.; Pina, C.; Santos, C.; Santos, S.; Vasconcelos, I.; Cabral, L.; Vieira, M.; Hogg, T.
- Caracterização química e sensorial de vinhos provenientes de castas nobres da região do DãoPublication . Guedes, P.; Pina, C.; Santos, C.; Santos, S.; Vasconcelos, I.; Cabral, L.; Vieira, M.; Hogg, T.
- Cultivars of vitis vinifera used for white wine production: initial characterisation of selected portuguese varietiesPublication . Guedes, P.; Pina, C. M. G.; Santos, C.; Vasconcelos, I.; Hogg, C.; Couto, J. A.; Cunha, L. M.; Hogg, T. A.
- Defining the uniqueness of monovarietal wines from native portuguese varieties of vitis viniferaPublication . Guedes, P.; Pina, C.; Santos, C.; Santos, S.; Vasconcelos, I.; Silva, M. C. M.; Hogg, T.
- Defining the uniqueness of monovarietal wines from native portuguese varieties of Vitis viniferaPublication . Guedes, P.; Pina, C.; Santos, C.; Vasconcelos, I.; Silva, M. C. M.; Hogg, T.; Cabral, L.; Vieira, M.; Pessanha, M.; Soares Franco, J. M.Studies have been carried out on red and white monovarietal wines vinified during the 1995, 1996 and 1997 harvests. The essential aim being to evaluate sensory quality, correlate it with chemical analytical data and relate these to the various winemaking options available. Hence selective native varieties from the Douro, Dao, Bairrada and Vinhos Verdes regions have been studied and the analytical / sensorial data correlated to such factors as grape maturation and maceration regime. Results are presented illustrating the quality effects of variety / winemaking practice combinations, both in terms of analytical data (sensory and chemical) and taster preferences.
- Food handlers as potential sources of dissemination of virulent strains of Staphylococcus aureus in the communityPublication . Castro, A.; Santos, C.; Meireles, H.; Silva, Joana; Teixeira, PaulaFood handlers may constitute a reservoir of virulent strains of Staphy-lococcus aureus and may be vehicles of their transmission to food.One hundred and sixty-two volunteers were assessed for the presence of S. aureuson the hands and in the nose. S. aureus was isolated by routine procedures, and theisolates were tested for susceptibility against a panel of nine antimicrobial agents.The isolates were further characterized by SmaI-PFGE profiling and the presence ofvirulence factors.Results: The prevalence of S. aureus was 19.8% in the nose and 11.1% on the hands;6.2% of the individuals carried S. aureus both in their noses and hands, and threeindividuals had the same strain (PFGE type) in the nose and on the hands. Although82% of the isolates were resistant to at least one antibiotic, none demonstrated thepresence of either mecA gene or resistance to oxacillin (none identified as MRSA).Sixty-eight percent of the isolates from the nose and hands possessed enterotoxingenes.This study revealed a high prevalence of antibiotic resistance and virulence deter-minants among the isolates, including not only classical and novel enterotoxin genesbut also major virulence factors such as tst. Potential dissemination of these strainsin the community is a matter of concern.© 2015 King Saud Bin Abdulaziz University for Health Sciences. Published by ElsevierLimited. All rights reserved
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