20 documents found, page 1 of 2
Farming a wild seaweed and changes to its composition, bioactivity, and bioacce...
Cardoso, C.; Almeida, J.; Coelho, I.; Delgado, I.; Gomes, R.; Quintã, R.; Bandarra, N.M.; Afonso, C.The nutritional value, elemental and fatty acid composition as well as key biological activities were determined in a large brown seaweed species (Saccorhiza polyschides, abundant in European shores), taking into account the effects of wild vs farmed and land-based vs open sea Integrated Multi-Trophic Aquaculture (IMTA) system dichotomies. The results showed that S. polyschides has significant amounts of releva...
Elemental composition and in vitro bioaccessibility assessment of holothuroids
Sales, S.S.; Lourenço, H.M.; Bandarra, N.M.; Cardoso, C.; Brito, P.; Botelho, M.J.; Gonçalves, S.; Coelho, I.; Delgado, I.; Pessoa, M.F.; Félix, P.M.The elemental composition and bioaccessibility of the wild holothuroids Holothuria arguinensis, Holothuria forskali, and Holothuria mammata was studied. Nutritional and toxicological aspects were evaluated. H. mammata was the richest in Mn, Ni, As, Cd, Pb, and Hg; H. forskali had the highest Cu and I contents, 4.12–4.93 mg/kg dw and 28.02–28.26 mg/kg dw, respectively; and Summer H. arguinensis had high Se conte...
Seasonal variation of chub mackerel (Scomber colias) selenium and vitamin B12 c...
Rego, A.; Coelho, I.; Motta, C.; Cardoso, C.; Gomes-Bispo, A.; Afonso, C.; Prates, J.A.M.; Bandarra, N.M.; Silva, J.A.L.; Castanheira, I.Chub mackerel (Scomber colias), an underutilised fish species, has been identified as an excellent source of selenium and vitamin B12, which may prevent and delay cognitive decline and dementia. Given these nutrients’ contents seasonal variability, a complete monthly sampling, involving a specifically adjusted methodology for the determination of vitamin B12 (LC-MS/MS) and its main vitamers and a sensitive anal...
Seasonality as experienced in the market and the resulting variation in the ami...
Motta, C.; Rego, A.; Cardoso, C.; Coelho, I.; Gomes-Bispo, A.; Afonso, C.; Prates, J.A.M.; Castanheira, I.; Bandarra, N.Chub mackerel (Scomber colias) is an underutilised fish species, abundant in the Atlantic Ocean. Its amino acid profile and elemental composition are still insufficiently studied. Accordingly, these aspects were studied on a monthly basis. The most abundant essential amino acids, lysine and leucine, had contents ranging from 1270 ± 40 mg/100 g in August to 1820 ± 96 mg/100 g in November and from 1210 ± 36 mg/10...
Assessment of the mechanisms and pathways of fish contamination and mercury-sel...
Ribeiro, M.; Zephyr, N.; Leufroy, A.; Coelho, I.; Danion, M.; Castanheira, I.; Guerin, T.; Jitaru, P.AIM Mercury (Hg) is one of the most dangerous chemical contaminants for humans and the environment. This is due to its extreme toxicity, particularly in the methylated form, denominated methylmercury (CH3Hg), which is easily absorbed by the body (bioaccumulation). CH3Hg is present in low concentrations in water and in water sediments, and can greatly increase its concentration in aquatic organisms, often reachi...
Building a database for provenance studies of origin wines from the Douro Valley
Coelho, I.; Matos, A.; Nascimento, A.; Bordado, J.; Donard, O.; Epova, E.; Barre, J.; Berail, S.; Castanheira, I.AIM: The aim of the present work is to produce high quality analytical data suitable for evaluating the provenance of Port wine and Douro wine and integrating an authentic wine reference database. Both wines are produced within the same geographical area, the Douro Valley region located in the northeast of Portugal but follow different vinification procedures. The fermentation of Port wine is interrupted by the...
Characterization of food from burnt areas in the Central Region of Portugal
Gueifão, S.; Moreira, T.; Ventura, M.; Delgado, I.; Coelho, I.; Castanheira, I.AIM: Forest fires constitute an environmental problem with adverse and diversified impacts on atmospheric, terrestrial, and aquatic ecosystems, with economic and social repercussions, and a significant impact on flora. Fire mineralizes soil nutrients and returns plant-locked nutrients to the soil. Nutrients are lost from the ecosystem through the release of particulates and volatile compounds during the fire, a...
Mackerel seasonality effect on Se content
Rego, A.; Ventura, M.; Gueifão, S.; Coelho, I.; Cardoso, C.; Afonso, C.; Bandarra, N.; Castanheira, I.Selenium is an essential micronutrient that can become toxic when ingested in high concentrations The human being can obtain Se through the consumption of food, dietary supplements, water and exposure to ambient air The food source is the most abundant and the main contributor to the daily intake of Se in Fish is one of the best sources of Se, and the Portuguese Mackerel is one of the most important and abundan...
Self-perceived oral health assessment of institutionalized elderly of Viseu
Veiga, N.; Couto, P.; Ribeiro, A.; Varelas, C.; Santos, I.; Pinto, M.; Coelho, I.Background: Self-perception of oral health is a multidimensional measure that, reflects the subjective experience of individuals about their physical and psychosocial well-being, determines the search for prevention and dental treatments.Objective: The assessment of the self-perception of oral health status of institutionalized elderly through the Geriatric Oral Health Assessment Index (GOHAI) and the verificat...
Resultados Minerais TDS Na, K, Ca, P, Fe , Mg
Nascimento, A.; Santiago, S.; Coelho, I.; Ventura, M.; Gueifão, S.; Coelho, M.Foram analisadas 229 amostras, por ICP-OES para a determinação dos teores de minerais: Na, K, Ca, P, Fe, Mg.