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Contamination analysis of Arctic ice samples as planetary field analogs and imp...

Coelho, Lígia F.; Blais, Marie-Amélie; Matveev, Alex; Keller-Costa, Tina; Vincent, Warwick F.; Da Silva Costa, Rodrigo; Martins, Zita; Canário, João

Missions to detect extraterrestrial life are being designed to visit Europa and Enceladus in the next decades. The contact between the mission payload and the habitable subsurface of these satellites involves significant risk of forward contamination. The standardization of protocols to decontaminate ice cores from planetary field analogs of icy moons, and monitor the contamination in downstream analysis, has a...


Structural shifts in sea ice prokaryotic communities across a salinity gradient...

Coelho, Lígia Fonseca; Couceiro, Joana Fernandes; Keller-Costa, Tina; Valente, Sara Martinez; Ramalho, Tiago Pereirinha; Carneiro, Joana; Comte, Jérôme

Current knowledge of the processes that shape prokaryotic community assembly in sea ice across polar ecosystems is scarce. Here, we coupled culture-dependent (bacterial isolation on R2A medium) and culture-independent (high throughput 16S rRNA gene sequencing) approaches to provide the first comprehensive assessment of prokaryotic communities in the late winter ice and its underlying water along a natural salin...


Impacto of foods replacement within western diet meal on inflammation a foodomi...

Ribeiro, Mafalda; Silva, Marta; Faria ,Miguel; Martins, Zita; Viegas, Olga; Sobral, Madelana; Cruz, Rebeca; Casal, Susana Ana; Ferreira, Isabel


Whole meals nutritional composition: comparison between experimental and theore...

Ribeiro, Mafalda; Silva, Marta; Viegas, Olga; Martins, Zita; Casal, Susana; Mendes, Eulália; Pinto, Edgar; Faria, Miguel A.; Ferreira, Isabel MPLVO

Information concerning food composition is essential in public health and nutrition. Chemical analyses are the most accurate methodologies for the assessment of food composition, however, these procedures are very expensive and time-consuming. Therefore, food composition data has been compiled in databases to facilitate the access and manipulation of information. Although food composition databases (FCDB) are v...


Impact of food replacements within a meal in the nutrients profile and quality ...

Silva, Marta; Ribeiro, Mafalda; Viegas, Olga; Martins, Zita; Casal, Susana; Mendes, Eulália; Faria, Miguel; Pinto, Edgar; Ferreira, Isabel MPLVO

Modern societies are increasingly prone to chronic noncommunicable diseases linked with inadequate nutrition. Knowledge about macronutrients balance, micronutrient deficiencies, bioactive and harmful compounds is the starting point of a holistic approach concerning the effects of ingestion of a whole meal in human health.


Nutritional quality of protein concentrates from Moringa Oleifera leaves and in...

Benhammouche, Tassadit; Melo, Armindo; Martins, Zita; Faria, Miguel A.; Pinho, Susana C.M.; Ferreira, Isabel M.L.P.V.O.; Zaidi, Farid

The nutritional value and digestibility of leaf proteins is still a major issue. Therefore, the goal of this work was to optimize the production of a protein concentrate (PC) from Moringa Oleifera defatted leaves (MODL) by enzymatic extraction using Viscozyme L and evaluate its nutritional quality and digestibility. Protein extraction conditions were screened using a factorial design. Enzyme/Substrate ratio and...


Impact of food replacements within a meal in the nutrients profile and quality ...

Silva, Marta; Ribeiro, Mafalda; Viegas, Olga; Martins, Zita; Casal, Susana; Mendes, Eulália; Faria, Miguel; Pinto, Edgar; Ferreira, Isabel.M.


Whole meals nutritional composition comparison between experimental and theoret...

Ribeiro, Mafalda; Silva, Marta; Viegas, Olga; Martins, Zita; Casal, Susana; Mendes, Eulália; Pinto,Edgar; Faria, Miguel.A.; Ferreira, Isabel.M.P.L.V.O.


Procura de vida em Marte: futuras missões ao planeta vermelho

Martins, Zita

A existência de vida para além da Terra é um tema cativante para a Humanidade. Em particular, a possibilidade de vida em Marte é o foco de várias futuras missões das agências espaciais Americana e Europeia (NASA e ESA respectivamente). A missão espacial Phoenix aterrou com sucesso no Planeta Vermelho em Maio de 2008. Desde então tem investigado a presença de água (sobre a forma de gelo), isto é qual o potencial...


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