Browsing by Author "Abalde, Julio"
Now showing items 1-20 of 56
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A capillary zone electrophoresis for determination of thiolic peptides in biological samples
Pérez Rama, Mónica; Abalde, Julio; Herrero, Concepción; Suárez, Cristina; Torres, Enrique (WILEY-VCH Verlag, 2009-06)A new method to improve the analyses of thiolic peptides (cysteine, γGlu-Cys, glutathione, phytochelatins and desglycyl-phytochelatins) derivatized with monobromobimane (mBrB) in complex biological samples by CZE is ... -
Analysis and enhancement of astaxanthin accumulation in Haematococcus pluvialis
Orosa García, Miguel; Franqueira, Dolores; Cid, Ángeles; Abalde, Julio (Elsevier, 2005-02)The green microalga Haematococcus pluvialis was cultured with different concentrations of NaNO3 to determine the effect on cell growth and astaxanthin accumulation. The optimum nitrate concentration to obtain astaxanthin ... -
Approach to biomass production of the marine microalga Tetraselmis suecica (kylin) butch using common garden fertilizer and soil extract as cheap nutrient supply in batch cultures
Fábregas, Jaime; Toribio, Luisa; Abalde, Julio; Cabezas, Buenaventura; Herrero, Concepción (Elsevier Applied Science Publishers, 1987)We report the possibility of an economic cultivation of the marine microalga Tetraselmis suecica, using different mixtures of a common garden fertilizer, soil extract, micronutrients and vitamins. Maximum cellular densities ... -
Astaxanthin Production in Cysts and Vegetative Cells of the Microalga Haematococcus Pluvialis Flotow
Herrero, Concepción; Orosa García, Miguel; Abalde, Julio; Rioboo, Carmen; Cid, Ángeles (Nova Science Publishers, 2012) -
Biochemical composition and growth of the marine microalga Dunaliella tertiolecta (Butcher) with different ammonium nitrogen concentrations as chloride, sulphate, nitrate and carbonate.
Fábregas, Jaime; Abalde, Julio; Herrero, Concepción (Elsevier Science Publishers, 1989)Cultures of the marine microalga Dunaliella tertiolecta were grown in ammonium chloride, sulphate, nitrate and carbonate at concentrations ranging from 0.25 to 16 mg.atom N/l. Cells were harvested in the stationary phase ... -
Biomass production and biochemical composition in mass cultures of the marine microalga Isochrysis galbana Parke at varying nutrient concentrations
Fábregas, Jaime; Herrero, Concepción; Cabezas, Buenaventura; Abalde, Julio (Elsevier Science Publishers, 1986)Mass cultures of Isochrysis galbana were carried out with four nutrient concentrations ranging from 2 to 16 mM of NaNO3 and salinity 35‰. An air flow of 15 l/min maintained a CO2 transference rate sufficient to keep the ... -
Biomass production and biochemical variability of the marine microalga Dunaliella tertiolecta (Butcher) with high nutrient concentrations
Fábregas, Jaime; Herrero, Concepción; Abalde, Julio; Cabezas, Buenaventura (Elsevier Science Editors, 1986)Mass cultures of Dunaliella tertiolecta were carried out in 10-l flasks with four nutrient concentrations in order to obtain a maximum biomass production and to find out its biochemical variability. Using these cultural ... -
Bioremediation of oxytetracycline in seawater by living and dead biomass of the microalga Phaeodactylum tricornutum
Santaeufemia, Sergio; Torres, Enrique; Mera, Roi; Abalde, Julio (Elsevier, 2016)Due to its use, a large amount of Oxytetracycline (OTC) is released into water, which has a detrimental impact on aquatic ecosystems and human health. Although there are different physicochemical methods (mainly photodegradation) ... -
Cadmium removal by living cells of the marine microalgaTetraselmis suecica
Torres, Enrique; Pérez Rama, Mónica; Abalde, Julio; Herrero, Concepción (2002-09)[Abstract] Cadmium removal by living cells of the marine microalga Tetraselmis suecica was tested in cultures exposed to different cadmium concentrations (0.6, 3, 6, 15, 30 and 45 mg/l). The EC50 for growth was 7.9 mg Cd/l ... -
Cadmium toxicity on the freshwater microalga Chlamydomonas moewusii Gerloff: Biosynthesis of thiol compounds
Suárez, Cristina; Torres, Enrique; Pérez Rama, Mónica; Herrero, Concepción; Abalde, Julio (SETAC-Press (Society of Environmental Toxicology and Chemistry), 2010-09)Cadmium (Cd) toxicity and production of different thiols (phytochelatins, glutathione, γ-Glu-Cys and cysteine) were studied in the microalga Chlamydomonas moewusii exposed to different concentrations of this metal (1, 2, ... -
Capillary zone electrophoresis for analysis of phytochelatins and other thiol peptides in complex biological samples derivatized with monobromobimane
Pérez Rama, Mónica; Torres, Enrique; Abalde, Julio (Wiley, 2005-02)A new method to improve the analysis of phytochelatins and their precursors (cysteine, γ-Glu-Cys, and glutathione) derivatized with monobromobimane (mBrB) in complex biological samples by capillary zone electrophoresis is ... -
Carotenoid accumulation in Haematococcus pluvialis in mixotrophic growth
Orosa García, Miguel; Franqueira, Dolores; Cid, Ángeles; Abalde, Julio (Springer, 2001-03)The microalga Haematococcus pluvialis was cultured with NaNO3 from 0 to 1 g l−1 and optimal growth was obtained at 0.15 g l−1. Sodium acetate and malonate (from 0 to 2% w/v) enhanced the accumulation of astaxanthin three ... -
Changes in protein, carbohydrates and gross energy in the marine microalga Dunaliella tertiolecta (Butcher) by nitrogen concentrations as nitrate, nitrite and urea
Fábregas, Jaime; Abalde, Julio; Cabezas, Buenaventura; Herrero, Concepción (Elsevier Science Publishers, 1989)Cultures of the marine microalga Dunaliella tertiolecta were grown in nitrate, nitrite and urea at concentrations ranging from 0·25 to 16 mg atom. N/litre. Great biochemical variability has been shown in this microalga ... -
Changes in the gross chemical composition of mass cultures of the marine microalga Dunaliella tertiolecta with different aeration rates
Fábregas, Jaime; Ferrón, Lucía; Abalde, Julio; Cabezas, Buenaventura; Otero, Ana (Elsevier, 1995)The effect of different aeration rates, in the range 0–6·51 l of air min−1 l of culture−1, and CO2 supply on the biochemical composition of mass cultures of the marine microalga Dunaliella tertiolecta was studied. The ... -
Class III metallothioneins in response to cadmium toxicity in the marine microalga Tetraselmis suecica (Kylin) Butch
Pérez-Rama, Mónica; Herrero, Concepción; Abalde, Julio; Torres, Enrique (Wiley, 2001-09)Microalgae are one of the most important organisms in our ecosystems being seriously affected by metal pollution. However, the microalgae Tetraselmis suecica (Kylin) Butch is tolerant to cadmium; the concentration of this ... -
Comparison of the accumulation of astaxanthin in Haematococcus pluvialis and other green microalgae under N-starvation and high light conditions
Orosa García, Miguel; Valero, J. F.; Herrero, Concepción; Abalde, Julio (Springer, 2001-07)Haematococcus pluvialis gave the highest astaxanthin accumulation rate (2.7 mg l−1 day−1) and total astaxanthin content ( 22.7 mg g−1 biomass). Astaxanthin accumulation in Neochloris wimmeri, Protosiphon botryoides, ... -
Comparison of the sensitivity of different toxicity test endpoints in a microalga exposed to the herbicide paraquat
Prado, Raquel; García Díaz, Rosa; Rioboo, Carmen; Herrero, Concepción; Abalde, Julio; Cid, Ángeles (2009-02)[Abstract]The use of herbicides constitutes the principal method of weed control but the introduction of these compounds into the aquatic environment can provoke severe consequences for non-target organisms such as microalgae. ... -
Composition and production of thiol constituents induced by cadmium in the marine microalga Tetraselmis suecica
Pérez Rama, Mónica; Torres, Enrique; Abalde, Julio (Wiley, 2006-01)Time course of intracellular levels of different thiols (phytochelatins, desglycyl-phytochelatins, glutathione, γ-glutamylcysteine [γ-Glu-Cys], and cysteine) were studied in the microalga Tetraselmis suecica exposed to ... -
Copper toxicity on the marine microalga Phaeodactylum tricornutum: effects on photosynthesis and related parameters
Cid, Ángeles; Herrero, Concepción; Torres, Enrique; Abalde, Julio (Elsevier, 1995-02)Essential heavy metals, as copper, can be toxic for microalgae at high concentrations. Copper affected growth and other parameters closely related to photosynthesis of the marine diatom Phaeodactylum tricornutum. A copper ... -
Crecimiento y composición bioquímica de la microalga marina Tetraselmis suecica en cultivos mixotróficos con distintos azúcares y aminoácidos
Cid, Ángeles; Abalde, Julio; Herrero, Concepción (Station Biologique de Roscoff, 1992)[Résumé] Croissance et composition biochimique de la microalgue TetrasellIIis sllecica dans des cultures mixotrophiques avec différents sucres et aminoacides. Trois sucres, fructose, saccharose et manose et trois acides ...
