Spirulina sp. LEB-18 culture using effluent from the anaerobic digestion

• Autor(a) principal: Borges, Joice Aline
• Data de Publicação: 2013
• Outros Autores: Rosa, Gabriel Martins da, Meza, Lucia Helena Rivero, Henrard, Adriano Seizi Arruda, Souza, Michele da Rosa Andrade Zimmermann de, Costa, Jorge Alberto Vieira
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da FURG (RI FURG)
• Texto Completo: http://repositorio.furg.br/handle/1/4525
• topic: Carbon source for Spirulina; Fatty acid profile; Microalga

The carbon source is the most expensive nutrient for Spirulina production; effluents from anaerobic digestion contain this nutrient in the form of HCO3 -. The aim of this study was to assess the growth kinetics, composition and fatty acid profile of Spirulina sp. LEB-18 grown in standard Zarrouk medium (NaHCO3 16.8 g L-1) and in Zarrouk medium replaced with 20% (v/v) effluent with reduced concentrations of NaHCO3 (5.3 and 2.8 g L-1). The use of effluent and lower concentrations of HCO3 - was found to be an alternative to reduce the costs of Spirulina production, because there were no significant differences in growth parameters (μmax 0.324 - 0.354 d-1; Pmax 0.280 - 0.297 g L-1 d-1), in the different culture medium used. Lipids ranged between 4.9 and 5.0%; the media with effluent had higher levels of linoleic acid compared to the standard medium.