Browsing by Author "Patarra, Rita F."
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- Algae as Food in Europe : An Overview of Species Diversity and Their ApplicationPublication . Mendes, Madalena C.; Navalho, Sofia; Ferreira, Alice; Paulino, Cristina; Figueiredo, Daniel; Silva, Daniel; Gao, Fengzheng; Gama, Florinda; Bombo, Gabriel; Jacinto, Rita; Aveiro, Susana S.; Schulze, Peter S. C.; Gonçalves, Ana Teresa; Pereira, Hugo; Gouveia, Luisa; Patarra, Rita F.; Abreu, Maria H.; Silva, Joana L.; Navalho, João; Varela, João C. S.; Speranza, Lais G.Algae have been consumed for millennia in several parts of the world as food, food supplements, and additives, due to their unique organoleptic properties and nutritional and health benefits. Algae are sustainable sources of proteins, minerals, and fiber, with well-balanced essential amino acids, pigments, and fatty acids, among other relevant metabolites for human nutrition. This review covers the historical consumption of algae in Europe, developments in the current European market, challenges when introducing new species to the market, bottlenecks in production technology, consumer acceptance, and legislation. The current algae species that are consumed and commercialized in Europe were investigated, according to their status under the European Union (EU) Novel Food legislation, along with the market perspectives in terms of the current research and development initiatives, while evaluating the interest and potential in the European market. The regular consumption of more than 150 algae species was identified, of which only 20% are approved under the EU Novel Food legislation, which demonstrates that the current legislation is not broad enough and requires an urgent update. Finally, the potential of the European algae market growth was indicated by the analysis of the trends in research, technological advances, and market initiatives to promote algae commercialization and consumption.
- Algas dos Açores : do mar para o pratoPublication . Patarra, Rita F.[…]. No Arquipélago dos Açores, o consumo de macroalgas é prática comum tradicional em algumas ilhas. Contudo, até há poucos anos não existiam, a nível regional, quaisquer estudos científicos que corroborassem a noção empírica do seu valor nutricional. Recentemente foram realizados diversos trabalhos, no Centro de Investigação de Recursos Naturais (CIRN), sobre a bioquímica das espécies consumidas localmente, bem como de outras espécies com possível interesse económico. Entre estes, o trabalho de Patarra et al. (2012) que mostra que as espécies estudadas são boas fontes de ácidos gordos polinsaturados, em especial da família ómega-3 e outros ácidos gordos essenciais. Estes compostos são essenciais para a nutrição de muitos animais, incluindo os seres humanos, tendo grande interesse para a indústria biotecnológica. Os ácidos gordos ómega-3 são importantes na prevenção e modulação de determinadas doenças comuns na civilização Ocidental, tais como doenças coronárias e inflamatórias, doenças de origem auto-imune, depressão e doença de Alzheimer. Desta forma, a composição das algas em ácidos gordos ómega-3 torna-as bastante atrativas, quer do ponto de vista terapêutico, quer do ponto de vista nutricional. […].
- Antioxidant activity of macroalgae from the AzoresPublication . Paiva, Lisete S.; Patarra, Rita F.; Neto, Ana I.; Lima, Elisabete M. C.; Baptista, José A. B.Free radical scavenging activity (FRSA) was studied to determine the antioxidant activity of 8 common macroalgae species found in the Azores. Species under study were Porphyra sp., Osmundea pinnatifida, Pterocladiella capillacea, Sphaerococcus coronopifolius and Gelidium microdon, from Rhodophyta; Ulva compressa and Chaetomorpha pachynema, from Chlorophyta and Fucus spiralis from Phaeophyta.The antioxidant activity was evaluated in methanolic extract by a decolourisation solution test of 2,2-diphenyl-1-picrylhydrazyl (DPPH), used as a stable radical. The methanolic extracts were obtained from dried biomass by sequential extractions, attaining a final concentration of 2 mg.mL-1. The FRSA values ranged from 19.54% for S. coronopifolius to 60.05% for F. spiralis with standard deviation (SD) varying between 1.41% and 6.80%. Results indicated that the studied seaweeds are a very promising source of biological active compounds with antioxidante properties. The seaweeds were collected in the Azorean islands where seawater pollution levels are low. Consequently, these seaweeds represent a valuable and good source of antioxidante material with superior beneficial effects on human health.
- Aquacultura Multi-Trófica Integrada (IMTA) e as macroalgas marinhasPublication . Patarra, Rita F.O desenvolvimento intensivo da aquacultura nas últimas décadas, bem como a crescente pressão nas zonas costeiras suscitou, e continua a suscitar, muitas preocupações ambientais. O aumento destas monoculturas intensivas, bem como o incremento do cultivo de peixes carnívoros e de camarão, resultaram na utilização excessiva de recursos, na dependência de rações comerciais, bem como precipitaram o aumento de descargas de efluentes nas zonas costeiras. Com a atual tendência para o consumo de alimentos cultivados organicamente, provenientes de ambientes naturais não poluídos, uma aquacultura mais sustentável é, não só, desejável, como deverá ser o futuro a seguir pelo sector. […].
- Azorean macroalgae as a food supplement: determination of proteins, fiber, and total of lipids and carbohydrates content.Publication . Paiva, Lisete S.; Lima, Elisabete M. C.; Baptista, José A. B.; Patarra, Rita F.; Neto, Ana I.This study evaluates the chemical composition (proteins, fiber, total lipids, total carbohydrates and ash) os selected macroalgae common at the Azorean shores with potencial nutricional value for human food suplement. The protein content ranged from 2.86% to 18.48% of dry weight (DW) for Padina pavonica and Codium adhaerens, respectively and fiber ranged from 31.02% to 69.10% of DW for Codium adhaerens and Cystoseira humilis, respectively. The total of lipids ranged from 1.55% to 5.20% of DW for Cystoseira humulis and Codium adhaerens, respectively, and the total of carbohydrates ranged from 7,61% to 16.78% for Padina pavonica and Codium adhaerens, respectively.
- Biotechnological applications of selected macroalgaePublication . Patarra, Rita F.; Paiva, Lisete S.; Leite, João; Lima, Elisabeth; Baptista, José A. B.; Neto, Ana I.
- Characterization and quantification of total carbohydrates of selected macroalgae from S. Miguel litoral zone.Publication . Garrido, Elena R.; Paiva, Lisete S.; Baptista, José A. B.; Patarra, Rita F.; Neto, Ana I.
- Characterization of transitional waters in the Azorean archipelago.Publication . Prestes, Afonso L.; Patarra, Rita F.; Álvaro, Nuno V.; Terra, Marlene R.; Fontaine, Camile; Cámara, Albert; Azevedo, José M. N.; Neto, Ana I.
- Coastal water characterization in the Azorean archipelago.Publication . Patarra, Rita F.; Prestes, Afonso L.; Álvaro, Nuno V.; Terra, Marlene R.; Fontaine, Camile; Cámara, Albert; Azevedo, José M. N.; Neto, Ana I.
- Coccolithophore species as indicators of surface oceanographic conditions in the vicinity of Azores islandsPublication . Silva, Alexandra A.; Brotas, Vanda; Valente, A.; Sá, C.; Diniz, Tania; Patarra, Rita F.; Álvaro, Nuno V.; Neto, Ana I.During summer 2008 and spring 2009, surface oceanographic surveys were carried out around three islands of the Azores archipelago (Terceira, São Miguel and Santa Maria) to assess the phytoplankton distribution and associated physico-chemical processes. The Azores archipelago is a major feature in the biogeochemical North Atlantic Subtropical Gyre (NAST) province although its influence on the productivity of the surrounding ocean is poorly known. Surface phytoplankton was studied by microscopy and HPLC (High Precision Liquid Chromatography). The mean values for biomass proxy Chlorophyll a (Chla) ranged from 0.04 to 0.55 μg Lˉ¹ (Chla maximum = 0.86 μg Lˉ¹) and coccolithophores were the most abundant group, followed by small flagellates, Cyanobacteria, diatoms and dinoflagellates being the least abundant group. The distribution of phytoplankton and coccolithophore species in particular presented seasonal differences and was consistent with the nearshore influence of warm subtropical waters from the south Azores current and colder subpolar waters from the north. The satellite-derived circulation patterns showed southward cold water intrusions off Terceira and northward warm water intrusions off Santa Maria. The warmer waters signal was confirmed by the subtropical coccolithophore assemblage, being Discosphaera tubifera a constant presence under these conditions. The regions of enhanced biomass, either resulting from northern cooler waters or from island induced processe, were characterized by the presence of Emiliania huxleyi. Diatoms and dinoflagellates indicated coastal and regional processe of nutrient enrichment and areas of physical stability, respectively.