| dc.description.abstract | The first aim of this study was to evaluate growth efficiency of Spirulina platensis growing on
conventional/modifying culture media. The second aim was to elucidate the influence of
different nutrient components of both conventional and modifying media on biochemical
composition of S.platensis. Spirulina cultivation requires oxygen supply and appropriate light
intensity for increased biomass production, cell productivity, specific growth rate, and
biochemical contents. Zarrouk medium (ZK) was used as standard and modified media was
prepared by changing the nitrogen and carbon source. Glucose (C6H12O6) and Ammonium
Nitrate (NH4NO3) were added in order to replace the carbon and nitrogen source respectively.
The alga was grown for 14 days at 25 ± 2 oC and pH 9. The growth efficiency was evaluated
based on Biomass X, Cell Productivity Px, Specific Growth Rate µ and Chlorophyll
concentration. Significant differences between ZK and Modified media in the growth
parameters were observed. The results indicated that S. platensis could utilize glucose most
efficiently and that growth was enhanced giving maximum average biomass at 0.674 g.L-1.
The maximum average chlorophyll content yield (17.788 ± 1.998 mg.L-1) were recorded using
Modified medium 1. There were no differences in specific growth rate, doubling time and
productivity of Spirulina cultured in Zarrouk and modified media. The results indicated that
the modified media with glucose added could be an economical way for large scale Spirulina
mass production with similar performance to the standard medium, Zarrouk medium. | en_US |
