Record number :
411584
Title of article :
Chlorophyll production from Spirulina platensis: cultivation with urea addition by fed-batch process
Author/Authors :
Carlota de Oliveira Rangel-Yagui، نويسنده , , Eliane Dalva Godoy Danesi، نويسنده , , Jo~ao Carlos Monteiro de Carvalho، نويسنده , , Sunao Sato، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
9
From page :
133
To page :
141
Abstract :
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 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.
Keywords :
Biomass production , Chlorophyll , Fed-batch process , urea , Light intensity , Spirulina platensis
Journal title :
Bioresource Technology
Serial Year :
2004
Link To Document :
بازگشت