Effect Nutrients and Temperature on The Total Growth and Chemical Composition to The Green Algae Chlorella vulgaris


Abstract in English

The effect of different concentrations of nitrate and phosphate and soil extract on the total growth and chemical composition to the green algae Chorella vulgaris isolated from some localaquatic habitats had studied in this research, at three type of temperature (30 , 25, 20), the maximum total growth reached up to 4.66 Cell/h and the lowest duplicated time was 1.55 h at temperature 25ºC and at concentration of nitrate 1 g/L , 0.05 g/L of phosphate, and 10/100 mL of soil solution , while the number of cells reached to 59423,61 cell/mL at the day 22 of cultivation. The chemical composition differed by the changing of temperature and nutrient medium composition , while the maximum protein content reached to 48.36 % at the maximum concentration of nutrients and 25 ºC of temperature , the maximal concentration of lipid was 19,78 % at temperature 25ºC and concentration of nitrate 0.1 g/L and 0.01 of phosphate and 6/100 mL of soil solution , the concentration of carbohydrates were the lowest where the maximal ratio was 17.41 % at temperature 20ºC .

References used

AHMED. M. A; DAWWOOD. S. ; ANFAL. N. A.The quantity determination of total carbohydrates and monosaccharides. from some green algae (Chlorophyta) Marsh Bulletin 7,27-38. 2012, P12
AL-AARAGY,M.J. Studies on the mass culture of freshwater microalgae as live food .for fish larvae.Ph.D.thesis,Collegeof Science, Basrah Uviversity.1996, 107pp
BARBOSA, J. M; HOOGAKKER, J; WIJFFELS, H. R. Optimisation of cultivation parameters in photobioreactors for microalgae cultivation using the Astat technique, Biomolecular Engineering 2003 , 115_/123

Download