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Percorrer CIMO por Objetivos de Desenvolvimento Sustentável (ODS) "01:Erradicar a Pobreza"
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- A Comprehensive Review of Fish Protein Hydrolysates Targeting Pet Food FormulationsPublication . Ribeiro, Tânia Isabel Bragança; Maia, Margarida R.G.; Fonseca, António J.M.; Marques, Bianca; Caleja, Cristina; Rosa, Ana; Martins, Rui; Almeida, André; Mota, Maria J.; Aires, Tiago; Rocha, Cristina M.R.; Teixeira, José António; Cabrita, Ana R.J.; Barros, Lillian; Pintado, ManuelaThe fish industry generates significant amounts of fish by- and co-products (FBCPs) annually, projected to reach 160.8 million tonnes by 2030. This growth highlights the urgent need for sustainable FBCP management and an opportunity to improve the sector’s environmental sustainability. Fish protein hydrolysates (FBCPHs) and bioactive peptides (BPs) derived from these FBCPs are gaining recognition in the pet food sector for their nutritional and bioactives benefits. FBCPHs, primarily sourced from category 3 by-products unsuitable for human consumption, could significantly enhance the economic viability of both industries. This review analyzes production processes, highlighting the benefits and challenges of enzymatic hydrolysis and reviewed emerging technologies such as subcritical water hydrolysis (SWH), which are promising sustainable alternatives by enhancing extraction efficiency and reducing energy consumption. The review explores FBCPHs’ applications in pet food, focusing on beneficial biological activities (e.g. antioxidant, prebiotic, neuroprotective). Findings show FBCPHs have significant potential in pet food formulations, providing palatability, hypoallergenic benefits, and addressing health concerns like gastrointestinal disorders and stress-related behaviors. However, further research is required to optimize production processes, scale industrial application, and ensure regulatory compliance. In conclusion, FBCPHs present a valuable solution for promoting sustainability, improving pet nutrition, and supporting the circular economy.
- Impact of Ecological Issues on Buy Intention: A Portuguese Quantitative StudyPublication . Ribeiro, Maria Isabel; Lopes, Isabel Maria; Fernandes, António Pedro Ribeiro; Fernandes, Ana Isabel Ribeiro; Fernandes, AntónioCurrently, ecological consumption is a topic that has generated a lot of interest and discussion, gaining importance in society due to the harmful environmental consequences and social and economic inequalities resulting from the rapid and disorganized economic and industrial growth of the last century. For these reasons, this study investigates how sustainable purchasing habits and environmental awareness impact the intention to buy ecological products by Portuguese consumers. Secondary data was collected to analyze the state of the art. Subsequently, a survey was carried out using a non-random convenience sampling procedure. The data (n = 1376) were processed and analyzed using the exploratory factor analysis, selecting the principal components method, and multivariate linear regression. The results reveal that environmental awareness, as well as sustainable purchasing habits, are predictors of the intention to buy ecological products. The results of this study identify determinants of the intention to buy green products and provide information to companies on the factors that could improve their economic results by increasing sales, attracting consumers with environmental concerns, and adopting a more sustainable business model.
- Impacts of climate-induced drought on lake and reservoir biodiversity and ecosystem services: a reviewPublication . Sun, Xinyu; Armstrong, Margaret; Moradi, Amirmohammad; Bhattacharya, Ruchi; Geraldes, Ana Maria; Munthali, Elias; Grossart, Hans-Peter; Matsuzaki, Shin-Ichiro; Kangur, Külli; Dunalska, Julita; Stockwell, Jason; Borre, LisaIntensifying extreme droughts are altering lentic ecosystems and disrupting services provisioning. Unfortunately, drought research often lacks a holistic and intersectoral consideration of drought impacts, which can limit relevance of the insights for adaptive management. This literature review evaluated the current state of lake and reservoir extreme drought research in relation to biodiversity and three ecosystem services. The study findings demonstrated that few articles linked or discussed drought implications with one or more ecosystem services, instead focusing primarily on biodiversity. Drought effects on biodiversity varied among species and taxonomic groups. In the limited literature that included ecosystem service provisioning, droughts had a general negative effect. Drinking water supply can decrease and become more costly. Decreasing water flow and volume can reduce hydropower generation. Degraded water quality can also impact recreation. Future intersectoral collaborations and research on intensifying droughts should support adaptive management efforts in mitigating drought impacts.
- Invasive dynamics of the signal crayfish Pacifastacus leniusculus in a protected areaPublication . Carvalho, Francisco; Alves, Henrique; Pascoal, Cláudia; Castro, Paulo; Miranda, Fernando Jorge Veloso; Teixeira, Amílcar; Cássio, Fernanda; Sousa, RonaldoInvasive species have been drivers of biodiversity loss and functional changes in aquatic ecosystems, including in protected areas. Therefore, monitoring population invasion dynamics and biological traits is fundamental to better understand their ecological and economic impacts and for management actions development. We followed signal crayfish (Pacifastacus leniusculus) invasion in Rabaçal River upper reach at Montesinho Natural Park, Portugal. We collected information on the spread and biological traits (abundance, size, weight, physical condition, sex ratio, and aggressiveness) to assess differences between invasion core and front areas and among years. Signal crayfish population remained restricted since first reports in 2013 in the invasion core until 2017. After 2019, signal crayfish population has been spreading downstream, decreasing abundance at invasion core but increasing at invasion front. Significant higher number of crayfish with claw loss indicate potential higher signs of aggressiveness in the invasion front. Results also demonstrate a significant dominance of females although sex ratio is closer to 1:1 at the invasion front. Overall, results indicate signal crayfish is spreading and increasing their abundance at Rabaçal River highlighting the need for immediate management actions to hold dispersion and mitigate possible impacts.
- Machine learning models for crude protein prediction in Tamani grass pasturesPublication . Monteiro, Gabriela Oliveira de Aquino; Difante, Gelson dos Santos; Montagner, Denise Baptaglin; Euclides, Valéria Pacheco Batista; Castro, Marina; Rodrigues, Jéssica Gomes; Pereira, Marislayne de Gusmão; Santana, Juliana Caroline Santos; Itavo, Luis Carlos Vinhas; Nantes, Rafael Torres; Campos, Jecelen Adriane; Costa, Anderson Bessa da; Matsubara, Edson TakashiUnderstanding forage quality is essential for meeting animal demands and optimizing production. This study aimed to: (i) test the applicability of machine learning models with tabular data such as climate variables, light interception (LI), nitrogen dose (N dose), interval between grazing (GI), and pre- (HPRE) and post-grazing height (HPOST) to predict leaf crude protein (CP) content of tamani grass pastures; (ii) identify which variables contribute most to CP prediction. A set of 90 instances was used with 80% for training and validation and 20% for testing. The hyperparameters were adjusted with grid-search on the training set. We tested Linear Regression (LR), Multilayer Perceptron (MLP), Decision Trees(DT), Random Forest (RF), and XGBoost. The MLP (r=0.75, R2 =44.18%, MAE=1.55), RF (r=0.78, R2 =49.07%, MAE=1.59) and XGBoost (r=0.78, R2 =56.65% MAE=1.45) models presented the best prediction results (p<0.001). The variables most important in predicting CP content were GI, followed by N dose, HPRE and HPOST. XGBoost outperformed other tested models (p<0.001). Tabular data, including N dose, GI, HPRE, HPOST, LI, and climatic variables, is a viable alternative for predicting CP. In conclusion, the results of this study suggest that management practices may have a greater influence on the chemical composition of Tamani grass than environmental conditions, although further research with larger and more diverse datasets is needed to confirm these findings.
- Occurrence of aflatoxins in food commodities produced and consumed in Angola and MozambiquePublication . Matusse, Cláudio ; Tolentino, Aritson D.S.; Lucamba, Zelda; Afonso, Sandra; Venâncio, Armando; Bila, João; Macuamule, Custódia; Rodrigues, PaulaAflatoxins, the mycotoxins produced by molds from the genus Aspergillus sect. Flavi that infest food and feed commodities, are a pressing issue in most African countries and their presence has led to a surge in health problems and food insecurity. The lack of effective monitoring and control in the Portuguese-Speaking African Countries (PALOP) has resulted in the underestimation of these mycotoxins. !e present work aimed to determine the occurrence of total aflatoxins (AFs) in several agricultural products – corn, beans, cassava flour, peanuts and rice – produced and consumed in the provinces of Cuanza Sul, Angola, and of Chongoene and Gaza, Mozambique. During 2023 and 2024, 236 samples (96 from Angola and 140 from Mozambique) were collected from local markets and analyzed for AFs using the lateral flow strip AgraStrip® Pro WATEX® (Romer) method. For Mozambique, 44% of all samples were positive for AFs (median=4.9 µg/kg). The highest incidence and contamination levels were found in corn, with all samples contaminated, ranging from the LOD to as high as 9200 µg/kg (median=26.9 µg/kg). Of these, 63% were contaminated above the Maximum Tolerable Limit (MTL) established by the Codex Alimentarius (15 µg/kg).
- Old and new climate change adaptation strategies by Montesinho mountain pastoralists, PortugalPublication . Aleixo-Pais, Isa G.; Castro, José; Frazão-Moreira, Amélia; Castro, João Paulo; Castro, MarinaMountain pastoralists are among the communities most affected by climate change, rendering empowerment of mountain communities and supportive policies essential.
- Pork meat consumption: a comparative analysis between Brazilian and Portuguese consumersPublication . Fernandes, António; Morais, Juan de Oliveira; Ribeiro, Maria IsabelThis quantitative and cross-sectional study aimed to analyze the trend in pork consumption among Portuguese and Brazilian households, to identify which attributes were most valued by consumers when purchasing fresh pork meat, and to verify whether there were significant differences between Portuguese and Brazilian consumers regarding the factors/motivations for pork meat consumption. The data collection took place between April 16 and June 16, 2024, using a questionnaire through Google Forms. Later, data were analyzed using statistical software appropriate to the Human and Social Sciences. The Chi-square test was used to compare proportions, and the Mann-Whitney test was used to compare two independent groups. Of the 210 valid responses gathered, most consumers were female, students, single, with higher education, living in households of 1 to 3 members with a net monthly income of up to 2,400 euros (R$14,391.89). A few consumers did not consume pork meat (7.6%). Of those who consumed it (n = 194), the majority preferred to buy fresh meat, valuing attributes such as flavor, taste (preference over other meats), and aroma. In the last six months, the frequency of consumption was similar between Portuguese and Brazilian consumers (p-value > 0.05). Furthermore, consumers would prefer the proportion of lean meat to be greater than the proportion of fatty meat. Considering the nationality, animal welfare, local production, organic production, meat tenderness, and low environmental impact were identified as differentiating factors (p-value < 0.05) of pork meat consumption. These factors prove to be more critical for Portuguese consumers than Brazilian ones.
- Portuguese consumers' preference regarding three protected designation of origin transmontano goatling butcher piecesPublication . Fernandes, António; Sousa, Fernando; Aveiro, Dina; Ribeiro, Maria IsabelEach half carcass was divided into three pieces: a leg, a shoulder, and a rib. So, to identify consumers' preferences about the three cuts, a questionnaire was applied at the National Agricultural Fair between June 3 and 11, 2023, in Santarém, Portugal. The sample was composed of 118 consumers aged between 20 and 81 years. Later, descriptive statistics and the Friedman test were used to analyze the data. The majority of the consumers were between 25 and 64 years old (72.9%), male (69.5%), had secondary (25.4%) or higher (36.4%) education, lived in households of two (40.7%) or three people (23.7%) with a monthly net income between 1,001 and 3,000 (44.9%) or 3,001 and 5,000 euros (21.2%) and lived in the districts of Santarém (30.5%), Lisbon (15.3%) and Leiria (11.0%). The frequency of goatling meat consumption is very diverse. In fact, 31.4% said they eat it sporadically, 31.4% more than once a week, 25.4% once a month, and 11.9% one to four times a month. When asked about the likelihood of buying the different cuts, 86.5% of respondents said it was likely or very likely that they would buy the rib, 80.6% the leg, and 79.6% the shoulder. No differences were found in the purchase probability between the leg and shoulder (p-value = 0.879). Still, a preference for the rib was confirmed (p-value < 0.05). The leg, the rib, and the shoulder can be sold between 13.09 and 22.41 euros/kg, 12.92 and 22.96 euros/kg, and 13,66 and 23,64 euros/Kg, respectively.