Browsing by Author "Barbosa, Carolina"
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- Adding value to endogenous resources: spicy chestnut bits and salty chestnut crackers... Wanna a bite?Publication . Barbosa, Carolina; Gualter, Francisco; Ferreira, Iasmin da Silva; Quintino, Mariah; Andrade, Paula Ariane; Witiak, Roksana; Cabo, Paula; Campos, João C.Two new products were created to address the challenge of promoting the nut value chain. The spicy chestnut appetizers involve baking frozen chestnuts with spices to create a warm or room-temperature snack. The salty chestnut flour cookies incorporate chestnuts and spices into a modified recipe for a savoury treat.
- Adding value to endogenous resources: spicy chestnut bits and salty chestnut crackers... Wanna a bite?Publication . Barbosa, Carolina; Gualter, Francisco; Ferreira, Iasmin da Silva; Quintino, Mariah; Andrade, Paula Ariane; Witiak, Roksana; Cabo, Paula; Campos, João C.Portugal is a leading producer of chestnuts, which are deeply rooted in the country's economy, gastronomy, and cultural heritage. To positively impact the chestnut sector's economic value, a co-creation project was initiated to develop chestnut-based food products that can add value and boost consumption. Two products were proposed: spicy chestnut bits and salty chestnut crackers, both of which received positive feedback from market surveys regarding their flavour, shape, and consumption occasion attributes. These products aim to shape the supply to changes in nut consumption, create new ways for chestnut intake, and explore potential synergies with other chestnut-based products.
- Solidification and heat-treatment conditions affecting the tensile properties and fracture feature of an automotive alsimg alloyPublication . Barbosa, Carolina; Azevedo, Hugo; Costa, Sharlane; Ribeiro, J.E.; Carlos, José; Costa, Tiago; Rocha, OtavioIn this work, a study on the interrelationship between the solidification and heat-treatment processes parameters with tensile properties and fracture feature was performed with an automotive AlSiMg alloy. For that, samples of the horizontally solidified Al7Si0.3 Mg (wt.%) alloy were subjected to the T6-heat treatment, and tensile tests were performed on both investigated samples, under conditions established from the literature. The solidification conditions such as growth and cooling rates and the secondary dendritic spacing (V-L and T-R and lambda(2), respectively) and their effects on the ultimate tensile strength (sigma(UTS)) and elongation (E%) were evaluated. Higher sigma(UTS) values were observed in the heat-treated samples and finer microstructures resulted in a better E% performance. Analysis by SEM/EDS fractography on both samples showed a mix between brittle and ductile fractures, constituted by cleavage facets, secondary cracks, facets covered with micro-voids, tear ridges and dimples. This allowed the deduction of the occurrence of a transition of a transition from ductile to brittle fracture along the solidified ingot as well as the predominance of brittle fracture in the heat-treated samples.