Abstract. QUEVEDO O, Catalina; MORALES V, Sonia P and ACOSTA C, Alejandro. Scenedesmus sp GROWTH IN DIFFERENT CULTURE mediums FOR . EVALUACIÓN DEL CRECIMIENTO DE LA MICROALGA Scenedesmus sp. E. No description. by. on 25 October Tweet. Crecimiento de Scenedesmus quadricauda en efluentes cloacales de la ciudad de Trelew, Chubut, Argentina.

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It was observed that the photosynthetic rates for immobilized S. Both irradiances showed that only around 5.

Prior to immobilization, the stock suspension of microalgae was centrifuged at rpm for 15 min and the cell pellets were washed twice with distilled water to remove the residual nutrients that might adhere to the cell surface. This difference is attributed to the fact that the photosynthetic rate was estimated to a light intensity 60 W m -2 and not for a maximum obtained to different intensities photosynthetic curve crecimieto reported in the present study.

A crecikiento consideration is that if crecimieto are not limiting and physiological conditions are optimal, then the photosynthetic activity is controlled only by light intensity.

The high activity associated to the high content of chlorophyll is related to the limitation of the light in the beads. La microalga Scenedesmus obliquus fue inmovilizada en esferas de Ca-alginato en dos densidades celulares del cultivo 6. The photosynthetic variables obtained for immobilized S. Scenedesmus ovalternus and Chlorella vulgaris species were used.

Effect of intermittent CO 2 enrichment during nutrient starvation on tertiary treatment of wastewater by alginate-immobilized Scenedesmus bicellularis. Review of practical aspects. In situ measurement of microalgal growth potential crecimienyo aquatic ecosystems by immobilized algae.


As mentioned earlier, experiments were run in triplicate. Analysis of effective light in different photobioreactors: Each species is usually characterized by a maximum growth rate under ideal conditions of growth Bartual et al.

Factors affecting the growth characteristics of alginate-entrapped Chlorella. This cellular concentration was higher than that obtained at UE m -2 s -1 from 3. About beads of calcium alginate 2. Immobilization of Botryococcus braunii in alginate: The ecology of phytoplankton. However, in the present study it was observed that the irradiance ranges matched the light levels used for the culture of this genus of microalgae Kaya et al. Materials and Methods Routine of culture Stock suspension of S.

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Reynolds indica que la tasa de crecimiento de Chlorella sp. This could be advantageous, because the cultures can work with a wide range of intensity of light in tropical regions.

Cultures of immobilized S. Literature cited Andersen, R. Both irradiances showed no significant differences on growth rates 0.

Role of glutamate dehydrogenase and glutamine synthetase in Chlorella vulgaris during assimilation of ammonium when jointly immobilized with the microalgae-growth-promoting bacterium Azospirillum brasilense.

Resumen La microalga Scenedesmus obliquus fue inmovilizada en esferas de Ca-alginato en dos densidades celulares del cultivo 6. Results in the present study suggest that cellular activity of immobilized cells decreases crecimietno stocking density increases, as noted by the lower photosynthetic rate P and Ej obtained in cultures with high cell density beads Table 1.

Every 6 h the numbers of cells in the beads were counted with a particle analyzer model Beckman Coulter Multisizer 3, after dissolving one bead in 5 mL of 0.


Therefore, light intensities not have significant effects on the growth and protein content in beads with low cell density cultures. Stock suspension of S.


Therefore, it was concluded that the light intensities selected in the present study not had significant effects in the growth and ceecimiento content in beads with low cells stocking. Jeanfils and Collar reported for S.

The photosynthetic parameters obtained for immobilized S. Growth The growth of se S. Mendoza-Espinosa 2M. In the study of immobilized cells, the high activity associated to the high content of chlorophyll is related to the limitation of the light in the beads.

Conclusions The photosynthetic parameters obtained for immobilized S. I curve indicated the specific irradiance that allows a maximum photosynthetic rate without reaching photo-inhibition. In the analysis of P-I curves it is important to take into account the conditions of the culture, such as high cell density cultures, which may cause considerable light attenuation.

Therefore, in immobilized systems it is important to determine the appropriate amount of light in order to reach maximum levels of biomass, nutrients removal and protein content.

En un estudio sobre la ultraestructura de las esferas de alginato Lebsky et al. However, it can be observed that in contrast to free-cell cultures, the appropriate light intensity obtained within the light limitation zone Xrecimiento curves does not guarantee a high biomass production and protein content.

Phycological Society of America.