CIMO - Artigos em Proceedings Não Indexados à WoS/Scopus
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Percorrer CIMO - Artigos em Proceedings Não Indexados à WoS/Scopus por Objetivos de Desenvolvimento Sustentável (ODS) "12:Produção e Consumo Sustentáveis"
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- FTIR coupled with chemometrics as a non-invasive tool for PDO olive oils’ discriminationPublication . Lamas, Sandra; Ruano, Daniela; Rodrigues, Nuno; Barreiro, Filomena; Peres, António M.; Pereira, José AlbertoQuality schemes protect the diversity of traditional European foods, such as the Protected Designation of Origin (PDO) and the Protected Geographical Indication (PGI). Only the olive oils from extra virgin and virgin commercial categories can be labelled with a PDO or PGI. In Portugal, currently, there are six PDOs. Olive oils labelled as PDO present a superior chemical-sensory quality. Nevertheless, from a commercial point of view it is of paramount importance to be able to identify them according to the correct label, avoiding fraud and ensuring the consumer regarding the exact origin of the purchased oil. Non-invasive and fast techniques, like Fourier transform infrared spectroscopy (FTIR), have been applied to assess olive oil origin and to detect fraud and adulterations. Thus, this work aimed to use FTIR spectra coupled with linear discriminant analysis-simulated annealing algorithm (LDA-SA) to classify commercial olive oils belonging to three Portuguese PDOs, namely, ‘Alentejo Interior’, ‘Beira Interior’, and ‘Trás-os-Montes’. The results showed that a FTIR-LDA-SA model could classify 30 independent oils according to the correct PDO with a sensitivity and specificity of 100% (training, leave-one-out cross-validation) and a sensitivity of 97.5% for the repeated K-fold cross-validation), based on the transmittance values recorded at six selected wavenumbers.
- Interdisciplinary investigations identify local knowledge important for pastoralist adaptation to climate change in Montesinho (Portugal)Publication . Aleixo-Pais, Isa G.; Castro, José; Frazão-Moreira, Amélia; Castro, João Paulo; Castro, MarinaPastoralists are among the most vulnerable groups to climate change and variability, as they depend on bioclimatic conditions for livestock forage biodiversity and production. In the complex socio-ecological system of the mountainous area of Montesinho Natural Park (north-east Portugal, Western Europe), traditional pastoralists are impacted by climate change in their rangelands (e.g. average monthly temperature increase, shifts in precipitation patterns) (Castro et al. 2021; Oliveira 2023). To understand the adaptive responses of local pastoralists to environmental change, this interdisciplinary research applied a three-step method. Firstly, we performed walking ethnographies with shepherds for over two years and used dialogues and observations to identify perceptions and local adaptations. Secondly, adaptive practices from other pastoral groups that could be viable in the study area were identified from the literature. And thirdly, co-participatory consultation workshops with pastoralists and representatives of local and national entities were developed to discuss and assess the adaptive measures for its practicality and sustainability. Shifts in precipitation patterns, drought and higher temperatures in the winter were identified as climate changes by local pastoralists, and several adaptive practices for water provision and conservation, additional fodder supply and livestock thermal comfort were listed by all local stakeholders involved in the project, as feasible solutions to overcome regional ecosystem shocks and trends. Local knowledge and climate perceptions were important for the documentation of adaptations at the rangeland level. This integrative approach, which resulted in a good practices guide, promotes practitioners and decision-makers to identify and discuss measures that will contribute to the resilience of traditional mountain pastoralism in the protected area of Montesinho and similar agro-pastoral systems
- 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.
- Rede de inovação de modelos de negócio agroflorestais (AF4EU)Publication . Pousa, Eduardo; Oliveira, Ana Carolina Farias de; Castro, José; Castro, João Paulo; Pereira, José Alberto; Castro, MarinaO crescimento da população mundial impõe a procura de soluções que permitam obter uma maior produção de alimentos através de práticas de uso do solo mais sustentáveis. Os sistemas agroflorestais devido às suas propriedades multifuncionais são parte da solução para abordar questões de sustentabilidade, incluindo ambientais, económicas ou sociais. Como resposta a estas necessidades, o projeto AF4EU, financiado pela União Europeia, tem como objetivo promover os sistemas agroflorestais europeus através do desenvolvimento de uma rede agroflorestal alargada, interativa e orientada para a inovação. Com este projeto pretende-se partilhar conhecimento local e cientifico, com recurso a ferramentas de TIC, dando especial atenção ao desenvolvimento e implementação de novas práticas rentáveis, modelos de negócio e serviços de extensão agroflorestal, considerando toda a cadeia alimentar, incluindo os consumidores. O AF4EU inclui 11 Redes Regionais de Inovação Agroflorestal (RAIN), distribuídas por várias regiões da Europa (Atlântica, Mediterrânica, Continental e Boreal) com atores relevantes (agricultores e produtores florestais, invesgadores, conselheiros, consumidores, ONGs, retalhistas e responsáveis políticos) e grupos operacionais. No decurso do projeto, será analisado um conjunto de 33 modelos de negócio agroflorestais em toda a Europa, sob a perspetiva do trinómio de sustentabilidade económica, ambiental e social. Inspirado em iniciativas anteriores (H2020), o AF4EU visa desenvolver uma plataforma de conhecimento agroflorestal que inclui: i) nuvem de conhecimento, ii) manual, iii) ferramenta de apoio à decisão empresarial de inovação agroflorestal (Afi-Bus DSS), visando a política agroflorestal na Europa, assim como um Curso Online Multilingue (MOOC) com módulos de formação direcionados aos agricultores e conselheiros. O AF4EU proporcionará um contributo significativo para a implementação e adoção dos sistemas agroflorestais em toda a Europa, através da partilha de conhecimento centrado em modelos de negócio rentáveis e do planeamento de comunicação, disseminação e exploração bem-sucedido, que despertará a atenção de grande número de pessoas na Europa.
- Smart Small Ruminant Device: An IoT-Based System for Real-Time Monitoring and Management of Sheep and Goat MobilityPublication . Araujo, Mateus; Castro, José; Castro, Marina; Leitão, Paulo; Bernuy, MiguelThe traditional agricultural practice of silvopastoralism, combining cultural heritage and ecological management, plays a vital role in food production and landscape management. This article explores the integration of precision livestock farming (PLF) into silvopastoral landscapes, using Internet of Things (IoT) technologies for monitoring and data transmission. Commercially available tracking devices lack interesting ergonomics, price and autonomy, and most companies do not focus on goats and sheep. A customized IoT device was developed and tested on goats, employing temperature/humidity sensors, relative position, geolocation and a longrange communication module. The system architecture enabled real-time data flow through the sensing, service and interface layers, resulting in data visualization. The results demonstrate the high reliability, low cost, interesting autonomy and appropriate ergonomics of the device, with the animals exhibiting normal behavior during the tests. The study highlights the effectiveness of IoT-enabled PLF for understanding grazing dynamics and animal behavior in silvopastoral systems, highlighting its potential for sustainable landscape management and the welfare of goats and sheep.
- Uso de membranas incorporadas com cortiça para a purificação de biodiesel de óleo residualPublication . Romansina, Bruna Clara; Brito, Paulo; Paschoal, Sirlei M.; Gomes, Maria Carolina SérgiO biodiesel vem ganhando destaque no mundo por possuir matéria-prima renovável, além de ser menos poluente que os combustíveis fósseis. Após a transesterificação, é necessária a separação e purificação dos ésteres, sendo empregadas lavagens aquosas para remover o glicerol. Porém, este processo convencional requer um alto volume de água. O objetivo deste trabalho foi avaliar o processo de separação utilizando membranas poliméricas funcionalizadas com cortiça como alternativa na purificação de biodiesel. O biodiesel foi produzido por transesterificação etílica utilizando óleo de algodão residual e NaOH como catalisador. As membranas foram produzidas pelo método de inversão de fases empregando polietersulfona como polímero, polivinilpirrolidona como copolímero, dimetilacinamida como solvente e cortiça como aditivo. As membranas foram caracterizadas em termos de permeabilidade hidráulica e MEV. O processo de separação foi realizado em um módulo de membranas e avaliou-se a filtração em duas fases distintas da produção do biodiesel. A primeira fase após a transesterificação e a segunda foi após a decantação da mistura reacional, utilizando a fase leve rica em ésteres. A menor concentração de glicerol obtida no permeado foi 0,097 ± 0,006%, na filtração da fase leve contendo os ésteres, representando uma retenção do glicerol pela membrana foi de 99,65%.