Portal de Periódicos da CAPES

Artigo Produção Nacional Revisado por pares

BIBTEX RIS

Chlorophyll production from Spirulina platensis : cultivation with urea addition by fed-batch process

2003; Elsevier BV; Volume: 92; Issue: 2 Linguagem: Inglês

10.1016/j.biortech.2003.09.002

1873-2976

Carlota de Oliveira Rangel‐Yagui, Eliane Dalva Godoy Danesi, João Carlos Monteiro de Carvalho, Sunao Sato,

Algal biology and biofuel production

The cyanobacterium Spirulina platensis is an attractive alternative source of the pigment chlorophyll, which is used as a natural color in food, cosmetic, and pharmaceutical products. In this work, the influence of the light intensity and urea supplementation as a nitrogen source using fed-batch cultivation for S. platensis growth and chlorophyll content was examined. Cultivations were carried out in 5 l open tanks, at 30+/-1 degrees C. Response surface methodology was utilized for analysis of the results, and models were obtained for biomass productivity, nitrogen-cell conversion factor and chlorophyll productivity. The best cellular growth was observed with 500 mg/l of urea at a light intensity of 5600 lx, whereas the highest concentration of chlorophyll in the biomass was observed with 500 mg/l of urea at a light intensity of 1400 lx. Overall, the best chlorophyll productivity was observed with 500 mg/l of urea at a light intensity of 3500 lx, providing the optimal balance between the cellular growth and the biomass chlorophyll content.