50 documents found, page 1 of 5
Adulteration of Brain Health (Cognitive, Mood, and Sleep Enhancement) Food Supp...
Paiva, Rafael; Correia, Manuela; Delerue-Matos, Cristina; Amaral, Joana S.In recent years, the consumption of dietary supplements has grown worldwide, particularly in developed regions. However, this growing market has also become a prime target for adulteration practices, with some manufacturers illegally adding pharmaceuticals into plant-based food supplements (PFS) to enhance their effects. While extensive research has focused on detecting adulterant drugs in PFS tailored for impr...
Assessment of the antioxidant capacity of commercial coffee using conventional ...
Morais, Stephanie L.; Rede, Diana; Ramalhosa, Maria João; Correia, Manuela; Santos, Marlene; Delerue-Matos, Cristina; Moreira, Manuela M.As one of the most popular beverages in the world, coffee is a rich source of non-enzymatic bioactive compounds with antioxidant capacity. In this study, twelve commercial coffee beverages found in local Portuguese markets were assessed to determine their total phenolic and flavonoid contents, as well as their antioxidant capacity, by conventional optical procedures, namely, ferric reducing antioxidant power an...
Diving into fish valorisation: review opportunities and analyzing azorean fish ...
Valério, Nádia Castanho; Soares, Margarida; Vilarinho, Cândida; Correia, Manuela; Carvalho, JoanaIn response to the exponential growth in world population, there has been a striking surge in the volume of discarded fish worldwide. This surge is particularly evident in the fish processing industry, where a substantial amount of waste is generated, posing significant environmental concerns. Consequently, the repurposing and utilisation of these waste materials have emerged as pivotal processes for the preser...
Removal of diclofenac and sulfamethoxazole from aqueous solutions and wastewate...
Soares, Cristina; Correia-Sá, Luísa; Paíga, Paula; Barbosa, Carlos; Remor, Paula Verônica; Freitas, Olga; Moreira, Manuela M.; Nouws, HenriThe three-dimensional (3D) electrochemical treatment process was studied for the removal of two pharmaceuticals, diclofenac (anti-inflammatory) and sulfamethoxazole (antibiotic), in mono and bi-component systems. Adsorption and conventional two-dimensional electrochemical processes were initially studied and then combined to develop the 3D process. The influence of different operating parameters on the removal ...
Bioactive lipids of seaweeds from the Portuguese north coast: health benefits v...
Soares, Cristina; Sousa, Sara; Machado, Susana; Vieira, Elsa; Carvalho, Ana P.; Ramalhosa, Maria João; Morais, Simone; Correia, ManuelaThe total lipid content and lipidic profile of seaweeds harvested in the North Coast and purchased in Portugal were determined in this paper. The amount of total lipids in the different species of seaweeds varied between 0.7 ± 0.1% (Chondrus crispus) and 3.8 ± 0.6% (Ulva spp.). Regarding the fatty acid content, polyunsaturated fatty acids (PUFA) ranged between 0–35%, with Ulva spp. presenting the highest amount...
Bioactive Lipids of Seaweeds from the Portuguese North Coast: Health Benefits v...
Soares, Cristina; Sousa, Sara; Machado, Susana; Vieira, Elsa; Carvalho, Ana P.; Ramalhosa, Maria João; Morais, Simone; Correia, Manuela; Oliva-Teles, MTThe total lipid content and lipidic profile of seaweeds harvested in the North Coast and purchased in Portugal were determined in this paper. The amount of total lipids in the different species of seaweeds varied between 0.7 ± 0.1% (Chondrus crispus) and 3.8 ± 0.6% (Ulva spp.). Regarding the fatty acid content, polyunsaturated fatty acids (PUFA) ranged between 0–35%, with Ulva spp. presenting the highest amount...
Strategies to reduce supra-optimal temperatures during field and containerized ...
Machado, Rui; Bryla, David; Correia, ManuelaThe roots of highbush blueberry are sensitive to high temperatures and tend to grow poorly in warm soils or warm soilless media. Three experiments were conducted to evaluate strategies for reducing temperatures in the root zone in Évora, Portugal, where soil can reach temperatures > 45 °C. The first experiment was conducted in a small planting of ‘Ozarkblue’ blueberry. Treatments included bare soil, a 10-cm-dee...
Development of New Canned Chub Mackerel Products Incorporating Edible Seaweeds—...
Vieira, Elsa F.; Soares, Cristina; Machado, Susana; Oliva-Teles, MT; Correia, Manuela; Ramalhosa, Maria João; Carvalho, A.; Domingues, ValentinaThis study aimed to develop new canned chub mackerel products incorporating edible seaweeds (Ascophyllum nodosum, Fucus spiralis, Saccorhiza polyschides, Chondrus crispus, Porphyra sp. and Ulva sp.) harvested in the Portuguese North-Central coast, with simultaneous sensory improvement and minerals enrichment. Two processes were compared, namely the addition of seaweeds in i) the canning step and ii) in the brin...
Assessment of 83 pharmaceuticals in WWTP influent and effluent samples by UHPLC...
Paíga, Paula; Correia, Manuela; Fernandes, Maria João; Silva, Ana Margarida; Martins de Carvalho, Maria Manuela; Vieira, Joana; Jorge, SandraThe removal efficiency of pharmaceuticals in wastewater treatment plants (WWTPs) is variable and some of these compounds pass these plants almost intact and others presenting a removal efficiency close to 100%. Their incomplete removal results in a continuous discharge of pharmaceuticals into the environment. To assess the profile of contamination of influents and effluents over a day, a set of 83 pharmaceutica...
Seaweeds from the Portuguese coast as a source of proteinaceous material: Total...
Vieira, Elsa Ferreira; Soares, Cristina; Machado, Susana; Correia, Manuela; Ramalhosa, Maria João; Oliva-Teles, MT; Carvalho, Ana; Domingues, ValentinaThe total protein content and the (total and free) amino acid composition of nine edible species of red, brown and green seaweeds collected in the Portuguese North-Central coast were quantified to assess their potential contribution to the recommended dietary intake. Whenever possible, the protein and amino acid composition was compared with that of commercial European seaweeds. The protein content was the high...