Enhanced Production of Chlorella ovalis and Dunaliella parva by the Rates of Medium Composition Obtained from the Fermented Animal Wastewater Including a Natural Substitute Chelator for EDTA

doi:2006.21.3.333

Algae > Volume 21(3); 2006 > Article

Algae 2006;21(3): 333-341. doi: https://doi.org/10.4490/algae.2006.21.3.333

Seon-Mi Jeon¹, Kyung-Hee Jeune¹ and Mi-Kyung Kim²^*

¹Department of Biology and
²Marine Science Research Center, Environmental Research Institute, Yeungnam University, Gyongsan 712-749, Korea

ABSTRACT

The productivities of Chlorella ovalis and Dunaliella parva were influenced by the rates of medium compositions obtained from the fermented animal wastewater (BM: bacteria mineral water) including a natural substitute chelator for EDTA (etylenediaminetetraacetic acid). The most favorable medium was -E+50 adding 50% BM in f/2 medium instead of EDTA, a chemical chelator, which increased more 19-fold of cell density in C. ovalis and 7-fold in D. parva than cells cultured on f/2 medium as well as the enhancements of chlorophyll a (f/2-E: 0.26 g L?1, -E+50: 1.5 g L?1 in C. ovalis; f/2-E: 2.7 g L?1, -E+50: 15 g L?1 in D. parva) and the increase of maximal PSII quantum yields. These results were verified that the BM could play an important part as a natural chelator substituted for EDTA. In the fields of biotechnology, food organisms in fishery and eco-industries of CO2 sequestration in air and nutrient removal in water, the natural chelator of BM could be applied to enhance the biomass of the other microalgae.

Key words: Words: biomass, BM, Chlorella ovalis, Dunaliella parva, EDTA, natural chelator