ICAAM - Instituto de Ciências Agrárias e Ambientais Mediterrânicas

Os compostos fenólicos (incluindo as antocianinas) estão presentes no vinho e possuem atividade antioxidante relevante, protegendo as células contra processos oxidativos, podendo ser importantes na prevenção de doenças cardiovasculares, neurodegenerativas e cancerígenas, entre outras. O objetivo deste trabalho é a avaliação da composição em antocianinas em castas de uvas tintas desde ao pintor até ao final da maturação. As antocianinas foram quantificadas por HPLC. Adicionalmente o conteúdo total em compostos fenólicos foi determinado por espectrometria UV-Vis. Observou-se nos resultados de todas as análises efetuadas um padrão repetido e consistente de evolução dos compostos em estudo. Foi ainda testado neste trabalho a quantificação das antocianinas totais, de malvidina-3- glucósido e dos compostos fenólicos totais através de um método espectroscópico baseado no espectro de absorção da zona UV. Embora a calibração deste método não tenha apresentado valores muito robustos, poderá no futuro ser utilizada como método alternativo rápido para a quantificação de antocianinas e compostos fenólicos; Abstract: «Quantification of Anthocyanins in Red Wine Grapes in Alentejo» Phenolic Compounds (including anthocyanins) are present in wine and possess significant antioxidant activity, protecting cells against oxidative processes, and preventing prevent cardiovascular, neurodegenerative and cancer diseases, among others. The aim of this study is the evaluation of the anthocyanins composition in red wine grapes from the verásion until the end of ripening. Anthocyanins were quantified by HPLC. Additionally the total content of phenolic compounds was determined by UV-Vis spectrometry. It was possible to verify in all tests that the results have a consistent evolution pattern considering different tested compounds. Anthocyanins, malvidin-3-glucoside and phenolic compounds were also quantified by a spectroscopic method based on the UV absorption spectrum. Although the calibration of this method has not presented very sturdy values, it should be improved in the future and used as an alternative method for rapid quantification of anthocyanins and phenolic content.

Rouxinol, M. Inês, Martins, M do Rosário, Barroso, João M., Rato, Ana Elisa (2017) "Antioxidant Potential of Vitis vinifera bioactive extracts", II Encontro de Estudantes de Doutoramento em Agricultura e Ambiente, 16th – 17th de Novembro, Universidade de Évora, Évora

Rouxinol, M. Inês, Véstia, Joana, Martins, M. Rosário, Barroso, João M., Rato, Ana Elisa (2017) “Utilização de espectroscopia UV para identificação e quantificação de compostos fenólicos em uvas tintas Vitis vinifera L.” I Congresso Lusobrasileiro de Horticultura. 2nd November de 2017, ISCTE, Lisboa

Rouxinol, M. Inês, Véstia, Joana, Martins, M. Rosário, Barroso, João M., Rato, Ana Elisa (2017) “Avaliação do conteúdo fenólico durante a maturação das uvas em castas tintas produzidas no Alentejo” I Congresso Luso-Extremadurense de Ciência e Tecnologia. 20th – 21st October 2017, Universidade de Évora, Évora

It may seem paradoxical that in a period of
rapid urban growth, some cities are shrinking;
however, they are two sides of the same coin of
urban change. This article identifies cities that
are shrinking in Portugal. Looking at the demographic
evolution from the 1991 until 2011 we
identified 17 cities that are losing inhabitants, 9
of them persistently and 8 since 2001. This
decline is present in the two biggest cities of
Portugal, Lisbon and Oporto that present 17%
and 21% decline respectively. After this first
screening, we crossed the history of each city
with socio-economic data (e.g. employment
rate, housing characteristics, and unemployment
among others) and purposed that reasons
for shrinking include: suburbanization, economic
transformation, satellite effect and environmental
drivers. However, several cities present
a mixture of reasons underlying shrinking
and further work should be undertake to complement
this exploratory analysis.

The attractiveness of cities as places to live determines population
movements into or out of them. Understanding the appealing
features is fundamental to local governments, particularly for
cities facing population decline. Pull and push attributes can
include economic aspects, the availability of amenities and
psychological constructs, initiating a discussion around which
factors are more relevant for migration. However, such discussion
has been underexplored in studies of shrinking cities. In the
present study, we contribute to the discussion by identifying pull
and push factors in Portuguese shrinking cities. Data were
collected using a face-to-face questionnaire of 701 residents in
four shrinking cities: Oporto, Barreiro, Peso da Régua and Moura.
Factor analysis and automatic linear modelling were used to
analyse the data. Our results show that the economic activity is
the most relevant feature for retaining residents. However,
characteristics specific to each city, related to heritage and natural
beauty, are also shown to influence a city’s attractiveness. The
cause of population shrinkage was also found to influence
residents’ assessments of the pull and push attributes of each city.
Furthermore, the results show the relevance of social ties and of
place attachment to inhabitants’ intention to continue living in
their city of residence.

Cities facing a continued and prolonged process of population
decline require innovative urban regeneration policies
complementary to growth-oriented policies. Losing inhabitants
involves a decrease in economic activity and social capital.
Therefore citizens’ participation in defining policies to cope with
population decline is being increasingly advocated. This research
focused on four shrinking cities of Portugal to capture residents’
knowledge about the strengths and weaknesses of their city of
residence as well as the policies and actions they prioritized for
dealing with the population decline. The responses from 701
questionnaires show that economic revival policies as well as
safety and accessibility policies were preferred. To put these
policies into action, the recovery of industrial activity, the creation
of business incubators, an improvement in law enforcement, and
public lighting were ranked as top priorities. Rank-ordered logistic
regression models were used to understand which variables
influenced the residents’ rankings. We found that the evaluation
of the city’s characteristics impact the ranking of the policies and
actions. Hence, residents show a high level of coherence when
engaging in a discussion at the level of policy-making. Therefore,
the findings support residents’ involvement in decision-making
processes regarding urban regeneration in shrinking cities.

The definition of management actions in natural resource management requires the integration of all types of knowledge involved. An appropriate approach for such a challenge is the ideal of transdisciplinarity. A transdisciplinary process can be considered " consultative " when knowledge is simply gathered and collated, or " participatory " when knowledge integration is undertaken collectively. In this paper, we present a mixed mode procedure (i.e., using interviews, questionnaires, and group discussions) that empirically demonstrates the difference between consultative and participatory transdisciplinary processes. The mixed mode procedure is used for identifying the most relevant problems occurring in the coastal system of Praia da Vit oria bay, Azores, Portugal. This mixed mode procedure is likely to be useful for other studies, because the results highlight the need to promote face-to-face interaction at the earliest opportunity, and because it allows an understanding to be gained of social learning processes, the influence of power, and participant behaviour during interaction with others.