Browsing by Author "Pereira, J."
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- Bioethanol production from agricultural wastesPublication . Duarte, José Cardoso; Sàágua, M. C.; Baeta-Hall, Lina; Correia, Anabela; Ribeiro, Belina; Lourenço, V.; Pereira, J.; Paixão, Susana M.In this study, different strains of Saccharomyces cerevisiae have been screened for the ability of bioethanol production. Yeasts were grown in synthetic liquid medium containing two different substrates: sucrose at different concentrations (10 to 400g/l) and cane molasses (120g/l of sucrose). The screening was made in batch regime and the growth rates, ethanol and biomass productions were determined. The results indicate a flocculent yeast strain – F as the more suitable microorganism to produce ethanol, presenting the highest value of growth rate (0.49h-1) and ethanol yield (0.40g/g) with 120g/l of sucrose concentration. In addition, ethanol production was also studied in a continuous process with the selected yeast strain (F strain), with sucrose and cane molasses (120g/l) at different dilution rates (0.05-0.5 h-1). Data showed that when dilution rate raised to 0.4h-1 the highest sugar conversion, 85% and 90%, were achieved with an ethanol production of 40.5g/l and 50.8g/l for sucrose and molasses, respectively.
- A biorefinery approach for the simultaneous production of biofuels and bioplastics [Poster]Publication . Ortigueira, Joana; Leite, T.; Pereira, J.; Serafim, L.S.; Silva, Carla; Moura, Patrícia; Lemos, Paulo Costa
- Glutathione-S-transferase activity and histological changes following exposure to TIO2 nanoparticles on juvenile Carassius auratusPublication . Diniz, M. S.; Crocco, H.; Pereira, J.; Peres, Isabel; Castro, Luísa; Mendonça, E.; Ferreira, L.; Barquinha, P.; Silva, R.J.C.; Fortunato, Elvira; Picado, Ana
- O projecto e-Geo : o protótipo do serviço webGISPublication . Laiginhas, Carlos; Pereira, J.; Patinha, Pedro; Fernandes, J. P.