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Revista fitotecnia mexicana
versión impresa ISSN 0187-7380
Resumen
RODAS-GAITAN, Heberto A. et al. Effect of inoculation cellular density on Chlorella vulgaris CLV2 growth cultivated under mixotrophic conditions. Rev. fitotec. mex [online]. 2012, vol.35, n.spe5, pp.83-86. ISSN 0187-7380.
The use of microalgae to produce biomolecules (proteins, carbohydrates and lipids) has increased in the last years. One of them is Chlorella vulgaris, a green motile unicellular microalga, of spherical form in the Chlorophyta Phylum. In this research three cellular inoculation densities were evaluated regarding their effect on algae growth under mixotrophic conditions, and sigmoidal models were adjusted to the obtained data in each density. In Treatment 1 (1 x 106 cells mL-1) the best model had an R2 of 0.85 and a generation time of 59 h. In Treatment 2 (2 x 106 cells mL-1) the best model had an R2 of 0.89 and a generation time of 23.5 h. In Treatment 3 (5 x 106 cells mL-1) the model had an R2 of 0.92 and a generation time of 7.5 h. Treatment 3, with the highest cellular inoculation density, showed the highest growth and shortest generation time;thus it decreased the time to reach each growth phase, and contaminating microorganisms were absent.
Palabras llave : Microalgae; growth phases; growth curve; generation time.