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Raceway cultivation of Spirulina platensis using underground water
Authors:Kim Choong-Jae  Jung Yun-Ho  Ko So-Ra  Kim Hong-Ik  Park Yong-Ha  Oh Hee-Mock
Institution:Environmental Biotechnology Research Center, KRIBB, Daejeon 305-806, Korea.
Abstract:The semi-outdoor cultivation of Spirulina platensis was attempted using an underground-water-based medium. Occurrence of contaminant organisms such as Chlorella sp. and Chlamydomonas sp. was not found from a microscopic observation and bacteria were not detected from denaturing gradient gel electrophoresis (DGGE) analysis of PCR-amplified 16S rDNA during the cultivation, owing to pH control and the high quality of the underground water. The mean productivity was high at 10.5 g/m2/d with a range of 4.2-12.3 g/m2/d despite the unfavorable weather conditions of the rainy season. The cultivated S. platensis included a normal protein content of 58.9%. Consequently, the underground water improved the biomass productivity and the biomass quality because of an abundant supplementation of natural minerals and through a contaminant-free culture.
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