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| Registros recuperados: 130 | |
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| Rumin, Judith; Nicolau, Elodie; Gonçalves De Oliveira Junior, Raimundo; Fuentes-grünewald, Claudio; Flynn, Kevin J; Picot, Laurent. |
| A bibliographic database of scientific papers published by authors affiliated worldwide, especially focused in Europe and in the European Atlantic Area, and containing the keywords “microalga(e)” or “phytoplankton” was built. A corpus of 79,020 publications was obtained and analyzed using the Orbit Intellixir software to highlight the evolution of the research domain. Publication rates from 1960 to 2019, organization of the research, collaboration networks between countries and organizations, emerging and fading research concepts, major studied species, and associated concepts, as well as journals publishing microalgae research were considered. As a result, of the 79,020 papers published worldwide, 26,137 included authors from Europe (33% of world... |
| Tipo: Text |
Palavras-chave: Biotechnology; European Atlantic Area; Microalgae; Phytoplankton; Research; Market; Bibliometrics. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00605/71725/70191.pdf |
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| Mairet, Francis; Baron, Regis. |
| The Droop model allows to represent microalgae growth limited by a nutrient, using a cell quota (also referred to as variable-yield) approach. Single-cell measurements have revealed quota heterogeneity in phytoplankton collected from field studies. Such heterogeneity can be due, among other factors, to spatial structure (e.g. in biogeochemical cycles in the ocean, or for photobioreactors connected in series). Nonetheless, quota heterogeneity is generally omitted in modelling studies, using an average quota approach, or included in size-structured or individual-based models. Here, we propose a distributed Droop equation to tackle this problem, considering subpopulation growth -in line with Droop macroscopic view- rather than cell division dynamics. We... |
| Tipo: Text |
Palavras-chave: Population Balance Model; Variable-yield model; Cell Quota; Phytoplankton; Microalgae. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00600/71187/69542.pdf |
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| Rumin, Judith; Nicolau, Elodie; Junior, Raimundo Gonçalves De Oliveira; Fuentes-grünewald, Claudio; Picot, Laurent. |
| A bibliographic database of scientific papers published by authors affiliated to research institutions worldwide, especially focused in Europe and in the European Atlantic Area, and containing the keywords “microalga(e)” or “phytoplankton” was built. A corpus of 79,020 publications was obtained and analyzed using the Orbit Intellixir software to characterize the research trends related to microalgae markets, markets opportunities and technologies that could have important impacts on markets evolution. Six major markets opportunities, the production of biofuels, bioplastics, biofertilizers, nutraceuticals, pharmaceuticals and cosmetics, and two fast-evolving technological domains driving markets evolution, microalgae harvesting and extraction technologies... |
| Tipo: Text |
Palavras-chave: Bibliometric; Microalgae; Biofertilizers; Bioplastics; Biotechnology; Cosmetics; Europe; Food; GMO; Market; Nutraceuticals; Pharmaceuticals; Research. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00630/74185/73788.pdf |
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| Le Norcy, Tiffany; Niemann, Hendrik; Proksch, Peter; Linossier, Isabelle; Vallee-rehel, Karine; Hellio, Claire; Fay, Fabienne. |
| Dibromohemibastadin-1 (DBHB) is an already known potent inhibitor of blue mussel phenoloxidase (which is a key enzyme involved in bioadhesion). Within this study, the potentiality of DBHB against microfouling has been investigated. The activity of DBHB was evaluated on key strains of bacteria and microalgae involved in marine biofilm formation and bioassays assessing impact on growth, adhesion and biofilm formation were used. To assess the efficiency of DBHB when included in a matrix, DBHB varnish was prepared and the anti-microfouling activity of coatings was assessed. Both in vitro and in situ immersions were carried out. Confocal Laser Scanning Microscopy (CLSM) was principally used to determine the biovolume and average thickness of biofilms developed... |
| Tipo: Text |
Palavras-chave: Antifouling; Biodegradable coating; Hemibastadin; Sponges; Marine bacteria; Microalgae. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00616/72812/72626.pdf |
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| Haguet, Quentin; Bonnet, Antoine; Berard, Jean-baptiste; Goldberg, Joelle; Joguet, Nicolas; Fleury, Audrey; Thiery, Valerie; Picot, Laurent. |
| Heterocapsa triquetra (Ht), a non-toxic dinophyte, was selected to investigate the presence of pigments inhibiting melanoma cells growth. We developed an innovative microwave-assisted extraction process (MAE), determined the Ht pigment composition using Reverse Phase-High Performance Liquid Chromatography (HPLC) and high-resolution Ultra Performance Liquid Chromatography-Mass Spectrometry E (UPLC-MSE) analysis and assessed their antiproliferative activity in human invasive melanoma cells (A2058) grown in vitro. MAE allowed a fast and efficient extraction of Ht pigments as compared with conventional processes (soaking, sonication). Seventeen pigments and derivatives were unequivocally identified by UPLC-MSᴱ in the Ht extract, among which two were supposed... |
| Tipo: Text |
Palavras-chave: Dinophyte; Heterocapsa; Melanoma; Microalgae; Microwave assisted extraction; Pigment. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00390/50127/50806.pdf |
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| Falaise, Charlotte; Francois, Cyrille; Travers, Marie-agnes; Morga, Benjamin; Haure, Joel; Tremblay, Rejean; Turcotte, Francois; Pasetto, Pamela; Gastineau, Romain; Hardivillier, Yann; Leignel, Vincent; Mouget, Jean-luc. |
| The search for novel compounds of marine origin has increased in the last decades for their application in various areas such as pharmaceutical, human or animal nutrition, cosmetics or bioenergy. In this context of blue technology development, microalgae are of particular interest due to their immense biodiversity and their relatively simple growth needs. In this review, we discuss about the promising use of microalgae and microalgal compounds as sources of natural antibiotics against human pathogens but also about their potential to limit microbial infections in aquaculture. An alternative to conventional antibiotics is needed as the microbial resistance to these drugs is increasing in humans and animals. Furthermore, using natural antibiotics for... |
| Tipo: Text |
Palavras-chave: Biological activity; Antimicrobial; Antibacterial; Antifungal; Antiviral; Biological activity; Haslea; Microalgae; Sustainable aquaculture. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00349/46052/45719.pdf |
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| Baudelet, Paul-hubert; Gagez, Anne-laure; Berard, Jean-baptiste; Juin, Camille; Bridiau, Nicolas; Kaas, Raymond; Thiery, Valerie; Cadoret, Jean-paul; Picot, Laurent. |
| The glaucophyte Cyanophora paradoxa (Cp) was chemically investigated to identify pigments efficiently inhibiting malignant melanoma, mammary carcinoma and lung adenocarcinoma cells growth. Cp water and ethanol extracts significantly inhibited the growth of the three cancer cell lines in vitro, at 100 mu g.mL(-1). Flash chromatography of the Cp ethanol extract, devoid of c-phycocyanin and allophycocyanin, enabled the collection of eight fractions, four of which strongly inhibited cancer cells growth at 100 mu g.mL(-1). Particularly, two fractions inhibited more than 90% of the melanoma cells growth, one inducing apoptosis in the three cancer cells lines. The detailed analysis of Cp pigment composition resulted in the discrimination of 17 molecules, ten of... |
| Tipo: Text |
Palavras-chave: Pigments; Microalgae; Cyanophora paradoxa; Melanoma; Cancer; Apoptosis; Zeaxanthin; Cryptoxanthin. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00177/28818/27289.pdf |
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| Pasquet, Virginie; Morisset, Perrine; Ihammouine, Said; Chepied, Amandine; Aumailley, Lucie; Berard, Jean-baptiste; Serive, Benoit; Kaas, Raymond; Lanneluc, Isabelle; Thiery, Valerie; Lafferriere, Mathieu; Piot, Jean-marie; Patrice, Thierry; Cadoret, Jean-paul; Picot, Laurent. |
| Dunaliella tertiolecta (DT) was chemically investigated to isolate molecules inhibiting cancer cell proliferation and inducing apoptosis in vitro. The potency to inhibit cell growth was used for the bio-guided fractionation and isolation of active compounds using chromatographic techniques. The DT dichloromethane extract exhibited a strong anti-proliferative activity on MCF-7 and LNCaP cells, and was further fractionated and sub-fractionated by RP-HPLC. High resolution mass spectrometry and spectrophotometric analysis unequivocally identified violaxanthin as the most antiproliferative molecule present in DT DCM extract. Violaxanthin purified from DT induced MCF-7 dose- dependent growth inhibition in continuous and discontinuous treatments, at... |
| Tipo: Text |
Palavras-chave: Pigments; Microalgae; Dunaliella; Violaxanthin; Carotenoid; Cancer; Apoptosis. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00040/15142/12575.pdf |
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| FONSECA, F. N. da; MICHELON, W.; MEZZARI, M. P.; SILVA, M. L. B. da. |
| O presente trabalho investigou a eficiência de uma solução de quitosana nanoparticulada na coagulação/ floculação de biomassa de microalgas Chlorella vulgaris, cultivada em efluente suinícola laboratório e em fotobioreatores de escala laboratorial. O efeito da quitosana nanoparticulada foi comparado ao uso da quitosana na forma pura utilizando testes de jarros. Entre as concentrações testadas (20, 30, 40 e 60 mg L-1), a nanoquitosana na dose de 40 mg L-1 apresentou a maior recuperação de biomassa (94%), enquanto a solução de quitosana pura (30 mg L-1) foi de 87%. Além disso, a nanoquitosana apresentou maior capacidade total de recuperação. Os resultados sugerem que as nanoparticulas de quitosana podem ser uma alternativa interessante de polímero orgânico... |
| Tipo: Separatas |
Palavras-chave: Nanotecnologia; Dejeto; Suíno; Microalga; Nanotechnology; Pig manure; Microalgae. |
| Ano: 2014 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1013962 |
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| Lepinay, Alexandra; Capiaux, Herve; Turpin, Vincent; Mondeguer, Florence; Lebeau, Thierry. |
| Haslea ostrearia produces a water-soluble, blue-green pigment, called marennine, with proven economic benefits (as a bioactive compound used to green oysters, which improves their market value). Incomplete knowledge of the ecological features of this marine diatom complicates its cultivation. More specifically, the ecology of bacteria surrounding H. ostrearia in ponds is what remains unknown. The structure of this bacterial community was previously analyzed by means of PCR-TTGE before and after isolating H. ostrearia cells recovered from 4 localities in order to distinguish the relative parts of the biotope and biocenose and to describe the temporal dynamics of the bacterial community structure at two time scales (2 weeks vs. 9 months). The bacterial... |
| Tipo: Text |
Palavras-chave: Biofilm; Ecology; Metabolic fingerprinting; Microalgae; Phycosphere; TTGE. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00326/43737/43344.pdf |
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| Li, Meng; Callier, Myriam; Blancheton, Jean-paul; Galès, Amandine; Nahon, Sarah; Triplet, Sebastien; Geoffroy, Thibault; Menniti, Christophe; Fouilland, Eric; Roque D'Orbcastel, Emmanuelle. |
| Integrated multi-trophic aquaculture (IMTA) systems are a promising solution for sustainable aquaculture combining nutrient recycling with increased biomass production. An innovative land-based recirculating aquaculture system (RAS) was studied in France for a 60-day experiment. It combined a European sea bass (Dicentrarchus labrax) RAS with two other production systems: high rate algal ponds (HRAP) with natural marine polyspecific algal assemblages, and oysters in separate open tanks. The objective was the assessment of: 1) the efficiency and the stability of the microalgae bioremediation of the effluent from a fish RAS in spring and summer, 2) the abundance and the diversity patterns of the microalgae biomass for consumption in the oyster compartment of... |
| Tipo: Text |
Palavras-chave: Microalgae; IMTA; Nutrient bioremediation; Community structure; Oysters. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00480/59207/61900.pdf |
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| LIMBERGER, S. N.; TURATI, D. F. M.; FARIA, R. G.; RODRIGUES, M. O.; RONCARATTI JÚNIOR, L. F.; GARCIA, L. C.; GAMBETTA, R.; JUNGMANN, L.. |
| O cultivo de microalgas pode representar uma possibilidade interessante para a produção de combustíveis renováveis, porém ainda não é economicamente viável para essa finalidade. Alguns estudos demonstram incremento na produção de biomassa algal ao utilizar, no cultivo, carbon quantum dots (CQD), nanopartículas florescentes de carbono. Ainda não há um consenso sobre o mecanismo de interação dos CQDs com as microalgas, podendo ser: ou por melhorar a eficiência na captura de luz, ou por gerar carbono inorgânico in situ. Neste trabalho foi feita a caracterização físico‑química preliminar de um CQD para sua aplicação no cultivo de microalgas, de modo a fornecer bases para compreensão do mecanismo de ação nas microalgas. Ensaios fluorimétricos foram... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Fluorescência; Carbon quantum dots; Microalga; Biocombustível; Microalgae; Biofuels. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1127046 |
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| VIANA, N. M.; SANTOS, A. C. dos; ANJOS, S. S. N. dos; MIRANDA, C. H. B.. |
| Os carotenoides representam o maior grupo de pigmentos naturais encontrados na natureza, sendo um metabólito de ação antioxidante que os torna competitivos no desenvolvimento de diversos produtos de alto valor agregado, como medicamentos, cosmecêuticos e nutracêuticos. Betacaroteno é o carotenoide de maior uso do mercado, com estimativa de 26% em 2021. Pode ser obtido de diversas fontes naturais, como cenoura, urucum, abóbora e microalgas, ou sintetizado em laboratório. Dentre as microalgas, as do gênero Dunaliella sp. são as mais usadas no mercado. Este é um estudo exploratório e qualiquantitativo a partir de dados secundários que caracterizem o mercado de betacaroteno e contextualize as microalgas do gênero Dunaliella sp. neste cenário. Apesar do... |
| Tipo: Anais e Proceedings de eventos |
Palavras-chave: Betacaroteno; Estudo de mercado; Caroteno; Microalga; Mercado; Biomassa; Microalgae; Beta-carotene; Dunaliella; Biomass. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1127051 |
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| Registros recuperados: 130 | |
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