Ciências da Vida | Comunicações em congressos, conferências, seminários / Communications in congreses, conferences, seminars
Permanent URI for this collection
Browse
Browsing Ciências da Vida | Comunicações em congressos, conferências, seminários / Communications in congreses, conferences, seminars by Title
Now showing 1 - 10 of 65
Results Per Page
Sort Options
- Acceptance of fish and fish products by Portuguese young consumers: an exploratory study based on mothers’ evaluationPublication . Moura, Ana Pinto de; Cunha, Luís Miguel; Azeiteiro, Ulisses; Lima, Rui C.Portugal is one of the major fish consuming countries in the World, from where one may collect experiences in order to improve fish consumption in other countries. The aim of this research is to explore the factors that influence the consumption of fish and seafood among 8-14 year old children from the Oporto metropolitan area. A focus group was conducted with mothers of children to gain insights into their knowledge, attitudes and perceptions regarding the inclusion of fish and fish products as a regular part of their children’s diet. Narrative analysis was conducted based on Bardin content analysis. Findings indicated that children eat fish regularly, integrated into the family meal, and that mothers feel confident about their fish buying and preparation skills, leading them to incorporate fish regularly into family meals, with a choice of tastier easy to eat options.
- Adaptation of the EsSence Profile for the evaluation of the emotional profile of herbal teasPublication . Rocha, C.; Pereira, D.; Madeira, A.; Lima, Rui C.; Cardoso, L.; Alves, L.; Moura, Ana Pinto de; Cunha, Luís MiguelIntroduction Infusions of herbs have been constantly sought and used for the pleasure of its aromatic richness and the impact on health and wellness. In recent years, the effect of emotional arousal on consumer’s perception has been studied1 Aim The aim of the present work is to apply and adapt the 39 emotion terms list of the EsSence Profile1 questionnaire, in order to optimize its applicability2 for herbal tea evaluation. Methods A non-trained panel of 100 consumers evaluated eight organic herbal teas: lemon verbena (Aloysia triphylla), white peppermint (Mentha x piperita officinalis), lemon thyme (Thymus x citriodorus), lemongrass (Cymbopogon citratus), chamomile (Chamaemelum nobile), lemon balm (Melissa officinalis), globe amaranth (Gomphrena globose) and tutsan (Hypericum androsaemum), using a CATA ballot with the 39 Essence Profile emotion terms. After the tasting test, two focus groups (n=6) were performed in order to evaluate the applicability of the questionnaire, namely the terms that were missing or those that did not match herbal teas. Results From the EsSence Profile results, consumers did not differentiate samples regarding the emotion terms ‘good’, ‘warm’, ‘nostalgic’, ‘uncontrolled’ and ‘guilty’ (p>0,05). The content analysis of focus groups suggests the removal of the terms ‘aggressive’ and ‘pleasant’, because consumers refer to them as a sensory attributes. The terms ‘whole’, ‘disgusted’ and ‘worried’ were removed as they were considered as not fitting the product. The emotion terms ‘happy’, ‘steady, ‘mild’ and ‘tender’ were removed because were considered to be very similar to other emotion terms in the questionnaire. The participants of the focus group added the emotions ‘indifferent’, ‘afraid’, ‘confused’ and ‘relaxed’. Discussion/conclusions Changes in the questionnaire, results on a list of 29 emotion terms for the evaluation of the emotional profile of selected herbal teas.
- Adoption of insects as a source for food and feed production : a cross-cultural study on determinants of acceptancePublication . Cunha, Luís Miguel; Gonçalves, A. T. S.; Varela, P.; Hersleth, M.; Neto, E. M. Costa; Grabowski, N. T.; House, J.; Santos, P.; Moura, Ana Pinto deMany traditional societies have used or still use insects as a protein source, while westernized societies are reluctant to use insects, despite being the major consumers of animal proteins. Edible insects are highly nutritious with high fat, protein and mineral contents depending on the species and thus represent a noteworthy alternative food and feed source. Nevertheless, consumer acceptance needs to be established. In this context, the present work aimed at investigating cross-cultural differences in perceived acceptance of the use of insects as a source for food and feed production. A cross-cultural consumer study was carried out in Brazil, Germany, Mozambique, Norway, Portugal, and United Kingdom. In each country 210 consumers, divided by gender and age group, were asked to complete a questionnaire comprising the following constructs: i) Health, Convenience and Ecological Welfare, built on 16 items drawn from the Food Choice Questionnaire; ii) Food Neophobia Scale, measured through ten items; iii) Awareness towards the use of insects as food, one item; iv) Exposure to edible insects, one item; v) Consumer acceptance of insects as food and as feed for chickens, cows, pigs and fish, seven items; vi) Disgust towards insects as food, five items; and vii) Knowledge regarding edible insects, one open-ended question; complemented with socio-demographic data. Acceptance of edible insects or of protein bars with cricket flour is generally low and strongly varies between countries, although highly correlating with the acceptance of sushi. Generally, there is a higher acceptance of fish, poultry, pork and beef from animals fed with feed formulae incorporating insects or insect proteins, with a strong variation of the underlying determinants within the different cultures. These results provide insight on how consumers perceive the acceptance of insects as food and feed, and stress the influence of cultural differences.
- Adoption of insects as a source for food and feed production: determinants of acceptance between urban consumers from Maputo, MozambiquePublication . Cunha, Luís Miguel; Santos, Pedro; Moura, Ana Pinto deThe aim of this work was to evaluate consumer acceptance of insects as food or feed, considering consumers from urban Maputo in Mozambique
- Application of eye-tracking technology for the evaluation of different packaging designs for premium organic herbal teasPublication . Rocha, C.; Lima, Rui C.; Alves, L.; Moura, Ana Pinto de; Cunha, Luís MiguelThe main goal of this study was to assess the impact four graphic designs (figure 1) on the perception of different extrinsic characteristics (premium and organic denomination, infusion name and brand).
- Application of rapid and conventional descriptive sensory techniques for pizza sauce evaluationPublication . Rocha, C.; Lima, R. C.; Moura, Ana Pinto de; Cunha, Luís MiguelThe fast descriptive techniques - CATA, Napping and UFP and Flash Profile, as well as the conventional QDA proved to be adequate tools for the descripion of products, revealing similar configuartions of the sensory space. The rapid descritive techniques prove to be effective alternatives to conventional profies, however some care must be taken.
- Artificial wetlands and their importance for water qualityPublication . Carapeto, Cristina; Purchase, DianeThe efficiency of a constructed wetland to remove Cd, Ni and Pb was studied over a six-month period. The distribution of these metals in the sediments was examined using a sequential extraction method. Results showed that high levels of Cd and Pb were present and that each metal has a characteristic distribution in the sediment. There was a significant difference in the removal efficiency of metals during dry weather and during storm events. Although, the removal of Ni and its distribution did not show any consistent trend, it was evident that a significant amount of Ni was removed during the storm event.
- Assessment of sediment contamination in an impacted estuary: differential effects and adaptations of sentinel organisms and implications for biomonitoringPublication . Costa, Pedro M.; Gonçalves, C.; Martins, M.; Rodrigo, Ana; Carreira, S.; Costa, Maria Helena; Caeiro, SandraEstuarine pollution is reflected in the concentration of toxicants in sediments, depending on their geochemical properties, since sediments trap substances from the water column, either dissolved or bound to suspended matter. However, determining risk of sediment contaminants to biota has many constraints. For such reason, integrative approaches are keystone. Taking the Sado estuary (SW Portugal) as a case study, contrasted to a reference estuary (the Mira) within the same geographical location, the present study aimed at integrating sediment contamination with the effects and responses to pollutants in distinct benthic organisms with commercial and ecological value.
- Avaliação da aceitabilidade do uso da lula de babaneira na alimentação escolar em São ToméPublication . António, Dilúvia Boa Morte Viegas d' Abreu; Mendonça, Álvaro Luís Pegado de; António, Meyer Madre de Deus Do Rosário António; Oliveira, Maria Rita Marques de; Moura, Ana Pinto deINTRODUÇÃO: O enriquecimento da alimentação escolar deve ser acompanhado da utilização de produtos agrícolas locais e de baixo custo e que sejam bem aceitos pelas crianças. Em São Tomé e Príncipe, a banana é um dos alimentos mais produzidos, consumidos, e do seu cultivo, existem subprodutos como a lula/flor de bananeira com potencial uso na alimentação. Segundo a Lei n.º 4/2012, Lei do Programa Nacional de Alimentação e Saúde Escolar (PNASE), para que sejam introduzidos novos ingredientes nos menus escolares, devem ser objeto de testes de aceitabilidade. OBJETIVOS: O objectivo do presente trabalho, foi avaliar a aceitabilidade da introdução e o aproveitamento de lula de bananeira na limentação escolar em São Tomé e Príncipe. METODOLOGIA: foram utilizados os métodos de avaliação sensorial, nomeadamente o teste de escala hedónica facial e duo trio, aonde participaram 106 provadores, sendo o primeiro teste com 92 alunos do ensino básico (6-14 anos) e segundo com 14 mestrandos treinados do Instituto Superior Politécnico de São Tomé e Príncipe. As receitas avaliadas foram aquelas já utilizadas na alimentação escolar sendo, molho de peixe com arroz, salada de feijão e sopa de hortaliças preparadas com as variedades de lula de banana prata e maçã. RESULTADOS: Os resultados revelaram uma aceitabilidade acima do limite mínimo estabelecido pela Lei do Programa Nacional de Alimentação e Saúde do Escolar (PNASE) para inclusão de novas receitas, 85% (molho de peixe com arroz: 88%; salada de feijão: 87%; e sopa de hortaliças: 87%). No teste duo trio, não foram observadas diferenças significativas de sabor entre as variedades de lula de bananeira utilizadas (maçã e prata) (Tabela 1). CONCLUSÕES: A inclusão da lula/flor de bananeira nos menus escolares não é apenas uma alternativa economicamente viável, mas também culturalmente respeitosa e com uma aceitabilidade satisfatória dos alunos, representando uma alternativa promissora para enriquecer os menus escolares.
- Avaliação do perigo de inundação de áreas urbanas expostas à subida do nível do mar em Portugal continentalPublication . Silva, Andreia Alves da; Trindade, Jorge; Rocha, JorgeA ocupação antrópica no litoral português sofreu uma mudança de paradigma no século XX. Um espaço outrora temido pela população, apenas frequentado sazonalmente por comunidades piscatórias, tornouse atrativo para a fixação de residentes (Gaspar de Freitas, 2007). Até à atualidade, têm-se registado variações populacionais positivas nas NUTS III que abrangem o litoral, contando com 82,5 % da população residente em Portugal, em 2021 (INE., 2023). A perspetiva de crescimento urbano no litoral, conjugada com um contexto de mudança climática, num país com 980 km de fronteira com o oceano (no território continental), exacerba as necessidades de salvaguarda da população que se expõe a fenómenos como a subida do nível do mar (SNM) e erosão costeira. Em Portugal, as taxas de erosão costeira são, em algumas áreas, >8 m/ano (Ponte Lira et al., 2016), e quanto à SNM, prevê-se que se mantenha até 2100, ano em que, caso se verifique o cenário Representative Concentration Pathway (RCP) 8.5, a sobreelevação do nível do mar atinja 80 cm em Portugal continental (NASA/IPCC). Tais fenómenos, acrescidos da ocorrência de eventos destrutivos (e.g.: tempestade Hercules), exacerbam a necessidade de gestão resiliente da orla costeira. Este trabalho pretende avaliar e mapear a exposição das comunidades urbanas face à SNM, em Portugal continental. Estabeleceu-se, primeiramente, uma metodologia de determinação da altura da coluna de água prevista baseada nos cenários RCP 2.6, 4.5 e 8.5, para os anos de 2040, 2070 e 2100, com informações sobre: a maré, a sobrelevação do nível do mar de origem meteorológica, o espraio de onda e, a SNM. Complementarmente, e baseado nos declives, distância às vias e ao tecido urbano, e nas dinâmicas passadas de uso do solo, projetou-se, com recurso a algoritmos de machine learning, a evolução do tecido urbano. Por fim, combinando os resultados, desenvolveram-se perfis municipais de exposição à SNM. Os resultados obtidos indicam que, em 2040, cerca de 65 km² sejam diretamente afetados por inundações costeiras, dos quais mais de 1/5 sejam áreas urbanas. Como possíveis soluções, apresenta-se medidas preventivas de mitigação dos riscos, como a definição de áreas críticas de construção urbana, e planeamento a longo-termo de relocalização antrópica.