Hipólito, Cátia; Ramalheira, Rosário; Beirão da Costa, Sara; Moldão-Martins, Margarida
Fruit quality is one of the main factors that influence the sorbets’ quality. The aim of this study was to
evaluate the effects of two different cultivars of five fruits (mandarin, lemon, melon and mango) or origin
(strawberries) on the overall quality of sorbets, right after being produced and after being preserved for
21 days at 18 C. Total soluble solids (TSS), titratable acidity (TA) and firmness were used to characterize
the fruits. Colour, pH, antioxidant capacity (AC) and total phenolic content (TPC), as well as sensory
attributes, were evaluated on fruits and respective sorbets. Fruit processing led to a loss of TPC and AC.
Caldeira, Ilda; Santos, Rui; Ricardo-da-Silva, Jorge M.; Anjos, Ofélia; Mira, Helena; Belchior, A. Pedro; Canas, Sara
The odorants compounds of aged wine brandies comprise compounds deriving from the wood, from the
distillate and from the reactions that occur inside the barrel. The aim of this work was to study the kinetics
of the odorant compounds of a wine brandy during two years of ageing in two ageing systems.
The odorant compounds in the analysed brandies changed significantly over the time, but with different
evolution patterns. The wood related compounds increased over time, with the highest increase in
the first months of ageing. The kinetics of cis, trans-b-methyl-c-octalactone, acetovanillone and of seven
volatile phenols are established for the first time in brandies. Moreover,...
Peres, Fátima; Martins, Luísa Louro; Mourato, Miguel; Vitorino, Conceição; Antunes, Paulo; Ferreira-Dias, Suzana
In this study, the lipophilic and hydrophilic phenol composition of virgin olive oils (VOO) obtained from
olives from two of the most important Portuguese cultivars (‘Galega Vulgar’ and ‘Cobrançosa’), harvested
at different ripening stages and under two irrigation schemes (rain fed and irrigated), was evaluated.
Phenolic alcohols (hydroxytyrosol and tyrosol), phenolic acids and derivatives and flavonoids (luteolin
and apigenin), as well as tocopherols were quantified. Lipophilic (>300 mg kg 1) and hydrophilic phenols
(>600 mg kg 1) were present in high contents in both VOO, for early ripening stages. Gamma-tocopherol
content is higher in ‘Galega Vulgar’ VOO. Total phenols showed a decrease between ripening index 2.5
Gama, Florinda; Saavedra, Teresa; Silva, José Paulo da; Miguel, Maria Graça; Varennes, Amarilis; Correia, Pedro José; Pestana, Maribela
Domingos, Sara; Fino, Joana; Paulo, Octávio S.; Oliveira, Cristina M.; Goulão, Luís F.
Flower-to-fruit transition depends of nutrient availability and regulation at the molecular level by sugarand hormone signalling crosstalk. However, in most species, the identities of fruit initiation regulatorsand their targets are largely unknown. To ascertain the main pathways involved in stenospermocarpictable grape fruit set, comprehensive transcriptional and metabolomic analyses were conducted specifi-cally targeting the early phase of this developmental stage in ‘Thompson Seedless’. The high-throughputanalyses performed disclosed the involvement of 496 differentially expressed genes and 28 differentlyaccumulated metabolites in the sampled inflorescences. Our data show broad transcriptome reprogram-ming of molecule transporters, globally down-regulating gene expression, and suggest that regulation ofsugar- and...
Pinho, Pedro; Dias, Teresa; Cordovil, Cláudia; Dragosits, Ulrike; Dise, Nancy B.; Sutton, Mark A.; Branquinho, Cristina
In this paper, we assess and map the risk that atmospheric nitrogen (atN) pollution poses to biodiversity in Natura 2000 sites in
mainland Portugal. We first review the ecological impacts of atN pollution on terrestrial ecosystems, focusing on the biodiversity of
Natura 2000 sites. These nature protection sites, especially those located within the Mediterranean Basin, are under-characterized
regarding the risk posed by atN pollution. We focus on ammonia (NH ) because this N form is mostly associated with agriculture,
which co-occurs at or in the immediate vicinity of most areas of conservation interest in Portugal. We produce a risk map integrating
NH emissions and the...
Orihuel, Alejandra; Terán, Lucrecia; Renaut, Jenny; Vignolo, Graciela M.; Almeida, André M. de; Saavedra, Maria L.; Fadda, Silvina
Fucic, Aleksandra; Galea, Karen S.; Duca, Rade Corneliu; El Yamani, Mounia; Frery, Nadine; Godderis, Lode; Halldorsson, Thorhallur; Iavicoli, Ivo; Ndaw, Sophie; Ribeiro, Edna; Viegas, Susana; Moshammer, Hanns
Endocrine disruptors (EDs) belong to large and diverse groups of agents that may cause
multiple biological effects associated with, for example, hormone imbalance and infertility, chronic
diseases such as diabetes, genome damage and cancer. The health risks related with the exposure to
EDs are typically underestimated, less well characterized, and not regulated to the same extent as, for
example, carcinogens. The increased production and utilization of identified or suspected EDs in
many different technological processes raises new challenges with respect to occupational exposure
settings and associated health risks. Due to the specific profile of health risk, occupational exposure
to EDs demands a new paradigm in health risk...
Paredes, Paula; Rodrigues, Geraldo J.; Petry, Mirta T.; Severo, Paula O.; Carlesso, Reimar; Pereira, L.S.
Simionesei, Lucian; Ramos, Tiago B.; Oliveira, Ana R.; Jongen, Marjan; Darouich, Hanaa; Weber, Kirsten; Proença, Vânia; Domingos, Tiago; Neves, Ramiro
The southern Iberian Peninsula is characterized by evergreen oak woodlands (locally
known as montado), which constitute an important savanna-type agro-silvo-pastoral ecosystem.
This ecosystem is facing a progressive decline for several reasons, with the foremost being overgrazing.
Better management tools are necessary to accurately quantify the systems’ carrying capacity and
the sustainable stocking rates that prevent land degradation. The purpose of this study was to
determine whether the MOHID-Land model could adequately simulate soil water dynamics and
pasture growth in the montado ecosystem. The study area was located in the Alentejo region of
southern Portugal. The model successfully simulated soil water contents and aboveground biomass
during the 2010–2011 and...
Palma, P.; Matos, C.; Alvarenga, P.; Kock-Schulmeyer, M.; Simões, I.; Barceló, D.; López de Alda, M.J.
The objective of the study was to assess the integrated use of macroinvertebrate indexes and ecotoxicological parameters
in the evaluation of the ecological status of a temporary stream with a strong agricultural influence.
Water quality was analysed at two sampling sites along the stream, considering: chemical supporting parameters;
hazardous substances (pesticides); benthic macroinvertebrate communities, through quality (Iberian Biological
Monitoring Working Party and Iberian Average Score Per Taxon) and multi-metric indices (Southern
Portuguese Index of Invertebrates and Ecological Quality Ratio); and ecotoxicological responses using lethal
and sub-lethal bioassays. The water chemical characterization showed high levels of organic matter and nutrients,
mainly in the dry period ((biochemical oxygen demand...
Monteiro, Filipa; Frese, Lothar; Castro, Sílvia; Duarte, Maria C.; Paulo, Octávio S.; Loureiro, João; Romeiras, Maria M.
Ramalho, José C.; Pais, Isabel P.; Leitão, António E.; Guerra, Mauro; Reboredo, Fernando H.; Máguas, Cristina M.; Carvalho, Maria L.; Scotti-Campos, Paula; Ribeiro-Barros, Ana I.; Lidon, Fernando J.C.; DaMatta, Fábio M.
Carvalho, Luísa C.; Coito, João L.; Gonçalves, Elsa F.; Lopes, Carlos; Amâncio, Sara
Extensive agricultural losses are attributed to heat, often combined with drought. These abiotic stresses occur in the field simultaneously, namely
in areas with Mediterranean climate, where grapevine traditionally grows. The available scenarios for climate change suggest an increase in the
frequency of heat waves and severe drought events in summer, also affecting the South of Portugal. In this work we monitored several productionrelated
parameters and evaluated the state of the oxidative stress response apparatus of two grapevine varieties, Touriga Nacional (TN) and
Trincadeira (TR), with and without irrigation, during three field seasons (2010 to 2012). Overall, results point to a high correlation of most...
Veloso, Maria Manuela; Simões-Costa, Maria Cristina; Carneiro, Luís C.; Guimarães, Joana B.; Mateus, Célia; Fevereiro, Pedro; Pinto-Ricardo, Cândido
The genetic diversity of “Gama” and “Bico de Corvo”, local cultivars of olive tree
(Olea europaea) from seven traditional orchards of Ficalho (Alentejo region, Portugal), was studied
to characterize the local diversity and assess the level of on farm diversity. Two different analytical
systems were used: endocarp morphological characteristics and genetic analysis by microsatellite
markers (Simple Sequence Repeats or SSR). The seven screened loci were polymorphic and allowed
the identification of 23 distinct SSR profiles within the 27 trees analyzed. A total of 52 different
alleles were scored, with an average of 7.43 alleles/SSR locus, and considerable genetic diversity
was found. Neighbor-Joining algorithm cluster analysis and principal...
Pinheiro, Ana Margarida; Carreira, Alexandra; Ferreira, Ricardo B.; Monteiro, Sara
Miao, Quingfeng; Shi, Haibin; Gonçalves, José M.; Pereira, L.S.
The sustainability of the Hetao Irrigation System, located in the water scarce upper Yellow
River basin, is a priority considering the need for water saving, increased water productivity, and
higher farmers’ incomes. The upgrading of basin irrigation, the main irrigation method, is essential
and includes the adoption of precise land levelling, cut-off management, improved water distribution
uniformity, and adequate irrigation scheduling. With this objective, the current study focuses on
upgrading wheat basin irrigation through improved design using a decision support system (DSS)
model, which considers land parcels characteristics, crop irrigation scheduling, soil infiltration,
hydraulic simulation, and environmental and economic impacts. Its use includes outlining water
saving scenarios and...
Menezes, Tiago; Romeiras, Maria M.; Sequeira, Miguel M.; Moura, Mónica
Karimi, Elham; Ramos, Miguel; Gonçalves, Jorge M.S.; Xavier, Joana R.; Reis, Margarida P. Reis; Costa, Rodrigo
Duvane, Jossias A.; Jorge, Tiago F.; Maquia, Ivete; Ribeiro, Natasha; Ribeiro-Barros, Ana I.F.; António, Carla