Acta Scientific Biotechnology (ASBT)

Research Article Volume 1 Issue 6

Effects of Irradiance and Different Nitrogen and Carbon Concentrations on the Minerals Accumulation in Scenedesmus obliquus Biomass

Jiménez Veuthey Mariana1,2* and Zapata Luz Marina1

1Laboratorio de Análisis de Metales en Alimentos y Otros Sustratos (LAMAS), Facultad de Ciencias de la Alimentación, Universidad Nacional de Entre Ríos (UNER), Concordia, Entre Ríos, Argentina
2Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina

*Corresponding Author: Jiménez Veuthey Mariana, Laboratorio de Análisis de Metales en Alimentos y Otros Sustratos (LAMAS), Facultad de Ciencias de la Alimentación, Universidad Nacional de Entre Ríos (UNER), Concordia, Entre Ríos, Argentina.

Received: May 02, 2020; Published: May 29, 2020

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Abstract

  Microalgae are capable of absorbing and concentrating constituent elements that have a wide variety of applications in agriculture, food industry and medicine. Microalgae chemical composition change according to internal and external factors. In this study, the effect of irradiance, sodium nitrate and sodium acetate concentration on the accumulation of essential minerals in Scenedesmus obliquus biomass were evaluated using 23 factorial screening designs. The simultaneous effect of the three experimental factors was studied using three levels for each parameter (irradiance: 36.71, 69.50, 102.30 μE m-2 s-1, sodium nitrate: 0.27, 44.00, 87.73 g L-1 and sodium acetate: 0.00, 2.50, 5.02 g L-1). The response variables were the minerals concentration of Na, K, Ca, Mg, Fe, Zn and Mn. Results show that each mineral has an optimal operation condition in order to improve its concentration in the microalgae biomass. A significant interaction between the variables was observed, which has direct effects on the minerals accumulation in the microalgae biomass. Under these conditions, maximum concentration of Na (5607.20 mg 100dw-1), K (1515.77 mg 100dw-1), Ca (2744.24 mg 100dw-1), Mg (9697.65 mg 100dw-1), Fe (2932.42 mg 100dw-1), Mn (38.48 mg 100dw-1) and Zn (324.00 mg 100dw-1) in the microalga biomass were obtained. Thus, Scenedesmus obliquus biomass was characterized as good essential mineral source and confirmed to be potentially valuable ingredient for utilization in the food industry.

Keywords: Experimental Design; Irradiance; Mineral; Scenedesmus obliquus; Sodium Acetate; Sodium Nitrate

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Citation

Citation: Jiménez Veuthey Mariana and Zapata Luz Marina. “Effects of Irradiance and Different Nitrogen and Carbon Concentrations on the Minerals Accumulation in Scenedesmus obliquus Biomass". Acta Scientific Biotechnology 1.6 (2020): 21-30.




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