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CIMO - Posters em Encontros Científicos Internacionais

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http://hdl.handle.net/10198/14573

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Percorrer CIMO - Posters em Encontros Científicos Internacionais por Objetivos de Desenvolvimento Sustentável (ODS) "04:Educação de Qualidade"

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  • Determination of global heat transfer coefficient in olive paste malaxation and its impact on olive oil quality outcome
    Publication . Martins, Davide Coelho; Souza, Thiago Pereira Pio de; Peres, António M.; Rodrigues, Nuno
    Effective control of malaxation conditions is crucial for extra virgin olive oil (EVOO) quality. This study evaluated the combined effects of malaxation temperature (25, 32, 40ºC), duration (30, 45, 60 min), and olive paste mass (350 g, 700 g) on EVOOs’ physicochemical and sensory parameters. Global heat transfer coefficients (U) were calculated under steady-state conditions ranging from 2 to 63 Wm−2ºC−1 and correlated with the oil’s quality parameters. Principal component analysis confirmed that processing variables studied strongly influenced EVOO profiles. Higher U values improved sensory attributes at shorter malaxing durations but detrimental under prolonged heating. Antioxidant activity increased either with lower paste mass and 45 min of malaxation, or with higher paste mass and 30 min of malaxation, at temperatures of 25–32°C. Results highlight the complex interaction of processing conditions and suggest that U may be a useful integrating metric of malaxing conditions and, to some extent, EVOO profiles.
    2025Póster em conferência Acesso aberto Ver mais
  • Effects of radiofrequency on chestnut quality
    Publication . Ribeiro, Caroline; Melgar Castañeda, Bruno; Fernandes, Ângela; Pires, Tânia C.S.P.; Finimundy, Tiane C.; Moreira, Jorge; Alexandre, Elizabete; Freire, Carlos; Franca, Tiago Vila; Fernandes, Natércia C.P.; Gonçalves, Alexandre; Barros, Lillian
    The chestnut (Castanea sativa Mill.) is a fruit with high nutritional value, but it is highly susceptible to infestation and post-harvest deterioration [1]. Infestations by Curculio elephas (Gyll) and Cydia splendana (Hübner) pose a significant challenge to the food industry, reducing product quality and causing considerable economic losses [2]. This study assessed the impact of radiofrequency (RF) application on the post-harvest quality of "Judia" chestnuts.
    2025Póster em conferência Acesso aberto Ver mais