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Ciência e Agrotecnologia

versão impressa ISSN 1413-7054versão On-line ISSN 1981-1829

Resumo

BERTOLIN, Tanise Boeira Pelegrini et al. Culture of the cyanobacteria Spirulina platensis using synthetic swine wastewater. Ciênc. agrotec. [online]. 2005, vol.29, n.1, pp.118-125. ISSN 1413-7054.  https://doi.org/10.1590/S1413-70542005000100015.

The growth of LEB-52 and PARACAS strains  of  Spirulina platensis cyanobacteria  was  studied  using  synthetic  swine  wastewater. The effects of medium dilution (0 and 50%) and sodium bicarbonate addition to the medium (0 and 3g/L) were  initially investigated. In this step, it was used a complete Factorial Planning 23. In the second step, the medium was diluted at 80, 50 and 20% and it was used a Factorial Planning 31x21. The cultivation was carried out at 30°C,  with  photophase  of 12  hours.  The  maximum biomass concentration and maximum specific growth rate were assessed, with the results being evaluated through Analysis of Variance. In first step, the greater biomass concentration (0.55g/L) was obtained with strain LEB-52, in synthetic swine wastewater diluted at 50% and without the sodium bicarbonate  addition,  as  supplementation  of   the carbon   source.  In  the  second  step,  the   greater  biomass  concentration was 0.35g/L using strain PARACAS and synthetic swine wastewater diluted at 80%. The two strains studied can grow in the synthetic swine wastewater and cyanobacteria growth is enhanced by medium dilution.

Palavras-chave : Spirulina platensis; cyanobacteria; swine.

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