Influence of NaNO3 concentration and incident light intensity on Nannochloropsis oculata lipid accumulation

Gris, Lara Regina Soccol; Paim, Anderson de Campos; Farenzena, Marcelo; Trierweiler, Jorge Otávio

Gris, Lara Regina Soccol; Paim, Anderson de Campos; Farenzena, Marcelo; Trierweiler, Jorge Otávio.

Gris, Lara Regina Soccol; Universidade Federal do Rio Grande do Sul. Departamento de Engenharia Química. Porto Alegre. BR
Paim, Anderson de Campos; Universidade Federal do Rio Grande do Sul. Departamento de Engenharia Química. Porto Alegre. BR
Farenzena, Marcelo; Universidade Federal do Rio Grande do Sul. Departamento de Engenharia Química. Porto Alegre. BR
Trierweiler, Jorge Otávio; Universidade Federal do Rio Grande do Sul. Departamento de Engenharia Química. Porto Alegre. BR

Braz. arch. biol. technol ; 56(4): 673-678, July-Aug. 2013. graf, tab

Article in English | LILACS | ID: lil-684520

ABSTRACT

ABSTRACT

This study aimed at evaluating the best conditions for lipid accumulation in the marine microalga Nannochloropsis oculata in an airlift photobioreactor. Experiments were carried out following a central composite design with the following variables temperature (19 to 29°C), sodium nitrate concentration (NaNO3) in the culture medium (f/2) (25 to 125 mg.L-1) and incident light intensity (49 to 140 µE.m-2s-1). The maximum lipid production was 132.4 mg.L-1 under the following conditions 27°C, NaNO3 concentration 105 mg.L-1 and 122 µE.m-2.s-1, which was 30% of dry weight of the biomass.

Airlift Photobioreactor; Central Composite Design; Lipid; Nannochloropsis oculata

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Full text: Available Index: LILACS (Americas) Language: English Journal: Braz. arch. biol. technol Journal subject: Biology Year: 2013 Type: Article Affiliation country: Brazil Institution/Affiliation country: Universidade Federal do Rio Grande do Sul/BR

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