16 documents found, page 1 of 2
Protein extracts from microalgae and cyanobacteria biomass. Techno-functional p...
Nunes, Emmanuel; Odenthal, Kilian; Nunes, Nuno; Fernandes, Tomásia; Fernandes, Igor A.; Carvalho, Miguel A. A. Pinheiro de; Nunes, NunoMicroalgae and cyanobacteria are photosynthetic and unicellular organisms that contain considerable amounts of proteins, lipids, carbohydrates, and polyunsaturated fatty acids, among others, with applications in the cosmetic, pharmaceutical, and food industries. These microorganisms can accumulate protein up to 70 % of total biomass depending on the microalgal strain, hence they have been regarded as an alterna...
Microalgae and cyanobacteria as natural sources of antioxidant enzymes and enzy...
Odenthal, Kilian; Nunes, Emmanuel; Nunes, Nuno; Fernandes, Tomásia; Fernandes, Igor A.; Carvalho, Miguel A. A. Pinheiro de; Nunes, NunoMicroalgae and cyanobacteria biomass can be cultivated in large amounts, producing a variety of bioactive compounds. As a result, various industries have begun to study the potential of this biomass in a wide range of applications such as biofuel production, environmental remediation for contaminated soil and water, food supplements, and as a source of feed for aquaculture. The cultivation conditions have a pro...
Effects of phosphorus-induced changes on the growth, nitrogen uptake, and bioch...
Fernandes, Tomásia; Cordeiro, NereidaThe understanding of the phosphorus-induced changes in the biochemical composition of microalgae is of great importance for achieving efciency in high-value lipid production. To study the chemoplasticity of Pavlova pinguis (Haptophyceae) and Hemiselmis cf. andersenii (Cryptophyceae), their growth, carotenoid and chlorophyll a content, and their monosaccharide and lipid profles were analyzed against several phos...
High-value lipids accumulation by Pavlova pinguis as a response to nitrogen-ind...
Fernandes, Tomásia; Cordeiro, NereidaThe challenges of exploring the potential of microalgal strains for biotechnological applications include the optimization of their cell growth and chemical composition. To overcome this, it is essential to understand the mechanisms that lead to the accumulation of desired products within microalgal cells. In this study, a gradient of nitrogen as nitrate (NO−3 − N) concentrations was used for the preparation of...
Comparative lipidomic analysis of Chlorella stigmatophora and Hemiselmis cf. an...
Fernandes, Tomásia; Ferreira, Artur; Cordeiro, NereidaThe current focus of algae biotechnology is the production of high-value lipids, and its improvement by employing abiotic perturbations such as nitrogen-induced changes. In the present study, the growth dynamics, nitrogen uptake, pigments, and lipid composition of Chlorellla stigmatophora and Hemiselmis cf. andersenii were studied, in response to low (LN), medium (MN) and high (HN) nitrogen supplementations. Bo...
Microalgae as sustainable biofactories to produce high-value lipids: biodiversi...
Fernandes, Tomásia; Cordeiro, NereidaMicroalgae are often called “sustainable biofactories” due to their dual potential to mitigate atmospheric carbon dioxide and produce a great diversity of high-value compounds. Nevertheless, the successful exploitation of microalgae as biofactories for industrial scale is dependent on choosing the right microalga and optimum growth conditions. Due to the rich biodiversity of microalgae, a screening pipeline sho...
Assessing the impact of sulfur concentrations on growth and biochemical composi...
Fernandes, Tomásia; Fernandes, Igor; Andrade, Carlos A. P.; Cordeiro, NereidaThe elemental stoichiometry, growth and biochemical composition of Nannochloropsis gaditana, Rhodomonas marina and Isochrysis sp. were studied in batch cultures against different nitrogen and sulfur molar ratios (N:S) imposed in their surroundings. In N. gaditana, treatments with low N:S lead to an increase in carbon:sulfur (C:S) and N:S molar ratios up to 95 and 81%, respectively. This was reflected in lipid a...
Influence of crop system fruit quality, carotenoids, fatty acids and phenolic c...
Fernandes, Igor; Leça, João M.; Aguiar, Roberto; Fernandes, Tomásia; Marques, José C.; Cordeiro, NereidaTomato is one of the most consumed vegetables in the world, and its intake is known to be beneficial for human health. The nutritional quality of tomato is connected with numerous factors namely the cultivation system. To achieve the highest fruit quality and yield, the cherry tomato (Lycopersicon esculentum Mill. var. Moscatel RZ) was cultivated in three cultivation systems and its nutritional quality was eval...
Hemiselmis andersenii and Chlorella stigmatophora as new sources of high‐value ...
Fernandes, Tomásia; Cordeiro, NereidaTo unlock the potential of Chlorella stigmatophora (Trebouxiophyceae, Chlorophyta) and Hemiselmis andersenii (Cryptophyceae, Cryptophyta) as natural reactors for biotechnological exploitation, their lipophilic extracts were characterized using Fourier Transform Infrared spectroscopy with Attenuated Total Reflectance (FTIR-ATR) and Gas Chromatography-Mass Spectrometry (GC-MS) before and after alkaline hydrolysis...
Exploring Pavlova pinguis chemical diversity: a potentially novel source of hig...
Fernandes, Tomásia; Martel, Antera; Cordeiro, NereidaTo uncover the potential of Pavlova pinguis J.C. Green as a natural source of value added compounds, its lipophilic extracts were studied before and after alkaline hydrolysis using gas chromatography-mass spectrometry (GC-MS). The GC-MS analysis of the lipophilic extracts showed a wide chemical diversity including 72 compounds distributed by fatty acids (29), sterols (14), fatty alcohols (13) and other lipophil...