Browsing by Author "Morais, A."
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- a* values to follow lycopene concentration during ripening and storage of tomato (cv. Caruso)Publication . Rocha, A.; Schauwers, A.; Morais, A.
- Effect of pH upon viability of probiotic strains when in contact with fruit pulpsPublication . Rodrigues, C.; Sousa, S.; Pinto, A.; Brandão, T.; Silva, J.; Pintado, M.; Silva, C.; Morais, A.; Teixeira, P.; Gomes, A.; Almeida, D.In recent years many probiotic-containing products have been developed, being dairy and dried products the main vehicles for probiotic intake. Fruit juices have also been studied, with less good results, probably due to their low pH values, as well as to the presence of other components, adverse to the survival of the probiotic strains. In order to pinpoint possible reasons therefore, in this study we tried to evaluate the effect of the fruit pulp pH upon the survival of Lactobacillus acidophilus LA-5 and Bifidobacterium animalis BB-12. Two fruit pulps, with different pH values, were used, namely lemon (pH=2.5) and avocado (pH=6.5), and their pH was adjusted (to 2.5, 4.5 and 6.5), in order to access the effect upon probiotic survival over one week storage. Viability was evaluated at 0, 3 and 7 days. Results showed that, although the pH value is indeed important, it is not the only reason for low viability of probiotics when incorporated in fruit pulps. Viability was, as expected, the highest when the pulps had a pH value of 6.5. At 4.5, avocado still had considerable viable cell numbers after one week contact with the pulp, while for lemon, at the same pH, no probiotics were detected after 3 days. At 2.5, for both pulps, no viable cells were detected after only 3 days. These results indicate that, although pH is important, other constituents of the fruits are also responsible for the degree of survival of probiotics in fruit matrices.
- Effects of minimal processing and temperature on respiration rate of carrot (var. Nantes)Publication . Rocha, A.; Mota, C.; Morais, A.
- Qualidade de batata descascada (var. Jaerla) armazenada em vácuoPublication . Rocha, A.; Coulon, E.; Morais, A.
- Recommendations for the implementation of a national lung cancer screening program in Portugal - a consensus statementPublication . Fernandes, M. G. O.; Dias, M.; Santos, R.; Ravara, S.; Fernandes, P.; Firmino-Machado, J.; Antunes, J. P.; Fernandes, O.; Madureira, A.; Hespanhol, V.; Rodrigues, C.; Vicente, C. A.; Alves, S.; Mendes, G.; Ilgenfritz, R.; Pinto, B. S.; Alves, J.; Saraiva, I.; Bárbara, C.; Cipriano, M. A.; Figueiredo, A.; Uva, M. S.; Jacinto, N.; Curvo-Semedo, L.; Morais, A.Lung cancer (LC) is a leading cause of cancer-related mortality worldwide. Lung Cancer Screening (LCS) programs that use low-dose computed tomography (LDCT) have been shown to reduce LC mortality by up to 25 % and are considered cost-effective. The European Health Union has encouraged its Member States to explore the feasibility of LCS implementation in their respective countries. The task force conducted a comprehensive literature review and engaged in extensive discussions to provide recommendations. These recommendations encompass the essential components required to initiate pilot LCS programs following the guidelines established by the World Health Organization. They were tailored to align with the specific context of the Portuguese healthcare system. The document addresses critical aspects, including the eligible population, methods for issuing invitations, radiological prerequisites, procedures for reporting results, referral processes, diagnostic strategies, program implementation, and ongoing monitoring. Furthermore, the task force emphasized that pairing LCS with evidence-based smoking cessation should be the standard of care for a high-quality screening program. This document also identifies areas for further research. These recommendations aim to guarantee that the implementation of a Portuguese LCS program ensures high-quality standards, consistency, and uniformity across centres.