Application of nutritional strategies and their effect in continuous culture of Spirulina (Arthrospira platensis)

Elizabet Rojas, Marcela Ávila, Gustavo Parada


DOI: https://doi.org/10.3856/vol40-issue3-fulltext-23

A continuous culture of Spirulina (Arthrospira platensis) was performed for 78 in a tubular photobioreactor of 300 L volume. During this period there was growth in biomass and crop response to the strategy of adding the nutrient medium. Using as a basis the modified Zarrouk medium, three nutritive combinations were elaborated: initial medium (MI), growth medium (SA1+SA2) and maintenance medium (SB1+SB2) for different crop stages. The media delivery is affected gradually and in accordance with requirements of growing biomass (dry weight) daily cultivation. The initial crop biomass was 2.0 g L-1, on day 20 of culture was made the first partial harvest (50%) starting a new stage of the crop with an initial biomass of 1.7 g L-1, 20 days after a second crop was partially culture initiating a third culture step with a biomass of 1.6 g L-1. The results obtained after harvest were, on the average, 3.7; 4.1 and 9.7 g L-1 respectively. The proximal analysis was performed at the end of the continuous cultivation showed a 71.6% of protein content.

Rojas E, Ávila M, Parada G. Application of nutritional strategies and their effect in continuous culture of Spirulina (Arthrospira platensis). Lat. Am. J. Aquat. Res.. 2017;40(3): 763-771. Available from: doi:10.3856/vol40-issue3-fulltext-23 [Accessed 15 Dec. 2019].
Rojas, E., Ávila, M., & Parada, G. (2017). Application of nutritional strategies and their effect in continuous culture of Spirulina (Arthrospira platensis). Latin American Journal of Aquatic Research, 40(3), 763-771. doi:http://dx.doi.org/10.3856/vol40-issue3-fulltext-23