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Validation of a single-extraction procedure for sequential analysis of vitamin ...
Cruz, Rebeca; Casal, Susana; Mendes, Eulália; Costa, Ana; Santos, Catarina; Morais, SimoneFood lipid major components are usually analyzed by individual methodologies using diverse extractive procedures for each class. A simple and fast extractive procedure was devised for the sequential analysis of vitamin E, cholesterol, fatty acids, and total fat estimation in seafood, reducing analyses time and organic solvent consumption. Several liquid/liquid-based extractive methodologies using chlorinated an...
Espresso coffee residues in horticultural improvement
Cruz, Rebeca; Morais, Simone; Mendes, Eulália; Pereira, J.A.; Baptista, Paula; Ramalhosa, Elsa; Casal, SusanaSpent coffee grounds are usually disposed as common garbage, without specific reuse strategies. Due to its recognized richness in bioactive compounds, the effect of espresso spent coffee grounds on lettuce´s macro- and micro- elements, as well as on its antioxidant and bioactive compounds, was assessed in order to ascertain its potential applicability in agroindustry, minimizing environmental issues and increas...
Pine nuts authenticity in the Portuguese market
Santos, Carla; Porfírio, Bruno; Silva, Anaísa; Faria, Miguel; Cruz, Rebeca; Ramalhosa, Elsa; Pereira, J.A.; Cunha, Sara; Casal, SusanaPine nuts, the edible seed of the pine tree (Pinus spp.) are a valuable commodity in the international market, with Portugal attaining the fourth position with the exclusive production of Pinus pinea. Pine nuts from different pine species differ in size, nutritional value, taste and therefore commercial values, making it necessary to grant their authenticity. Following recent reports on pine nut mislabelling in...
Effect of fresh and composted espresso spent coffee on soil and Lactuca sativa ...
Gomes, Teresa; Cruz, Rebeca; Pereira, J.A.; Ramalhosa, Elsa; Casal, Susana; Baptista, PaulaEspresso spent coffee grounds (ESC) comprises solid residues obtained after espresso coffee preparation, which are massively generated worldwide, being unfortunately disposed together with common garbage. Still, there are several references about its application as organic fertilizer in domestic cultivation, due to their richness on mineral compounds, especially potassium. However, their effect or safety on agr...
Pine nuts authenticity in the Portuguese market
Santos, Carla; Porfírio, Bruno; Silva, Anaísa; Faria, Miguel; Cruz, Rebeca; Ramalhosa, Elsa; Pereira, J.A.; Cunha, Sara; Casal, SusanaPine nuts, the edible seed of the pine tree (Pinus spp.) are a valuable commodity in the international market, with Portugal attaining the fourth position with the exclusive production of Pinus pinea. Pine nuts from different pine species differ in size, nutritional value, taste and therefore commercial values, making it necessary to grant their authenticity. Following recent reports on pine nut mislabelling in...
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