Growth of the gree
Growth of the green alga Chlorella vulgaris as affected by different carbon sources
1Battah M. G. 2El-Sayed, A.B. and 1El-Sayed, E.W
1 Botany Department, Faculty of Science, Benha University, Egypt.
2 Algal Biotechnology Unit, National Research Centre, Dokki- Cairo, Egypt.
Abstract: The green alga Chlorella vulgaris was grown under BG-II growth medium conditions comparing with such media enrichment with different carbon sources. The tested carbon sources were carbon dioxide, sodium acetate, acetic, oxalic and citric-acids. The effect of urea carbon was also eliminated using urea free carbon dioxide cultures. Dry weight, total chlorophyll and carotenes were daily determined. Urea nitrogen cultures; as a carbon source; exhibited more dry weight comparing with those of nitrate cultures. Concerning other carbon source in spit urea, acetate salt cultures surpassed all other examined carbon sources. An opposite manner was observed on chlorophyll accumulation, where, nitrate cultures represented the maximum yield. Maximum carotene content was observed with sodium acetate cultures. On the average, biomass growth rate was higher with urea nitrogen and acetate followed by carbon dioxide. The lowest dry weight, total chlorophyll and carotene accumulation was observed by cultures that grown with oxalic carbon which might ascribe to the harmful acidic action.
[Battah M. G.; El-Sayed, A.B. and El-Sayed, E.W. Growth of the green alga Chlorella vulgaris as affected by different carbon sources. Life Sci J 2013;10(1):2075-2081] (ISSN:1097-8135). http://www.lifesciencesite.com.
Keywords: Chlorella vulgaris, nitrate, urea, organic carbon, growth parameters
