Effects of nitrate and ph sphate on the growth and total lipid contents of Chlorella oocystoides and Chlorella minutissima ( Chlorophyceae) | ||||
| Al-Azhar Bulletin of Science | ||||
| Article 3, Volume 25, Issue 1-C, June 2014, Page 27-43 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/absb.2014.25190 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| S. A. Desouky1; Taher M. Taha1; Hafez E. Elsayed2; Abdel- Mola K. Mebed3 | ||||
| 1Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Assiut, Egypt. | ||||
| 2Plant Molecular Pathology Department. City for Scientific Research and Technology Applications, New Borg El-Arab, Alexandria, Egypt. | ||||
| 3External student higher studies, Faculty of Science, Al-Azhar University, Assiut, Egypt. | ||||
| Abstract | ||||
| The effects of different concentrations (0.1, 0.5, 1.5 and 4.5 ppm) of nitrate (NO3-) as NaNO3 and phosphate ( PO4---) as K2HPO4 on growth parameters (dry weight, optical density, total pigments), total lipid, total carbohydrate and total protein contents of Chlorella oocystoides and Chlorella minutissima cultured were followed for 7 days. The growth parameters (dry weight, optical density and total pigments), total carbohydrate and total protein contents of Chlorella oocystoides and Chlorella minutissima were significantly increased up to the concentration 1.5 ppm of NO3- and PO4--- Under relatively higher concentration 4.5 ppm of NO3- and PO4--- all these parameters were significantly decreased. On the contrary, the total lipid contents were significantly increased up to the 0.1 ppm of NO3- and PO4--- However, under relatively higher concentration 4.5 ppm of NO3- and PO4---, the total lipid contents were significantly decreased | ||||
| Keywords | ||||
| Chlorella; growth parameters; total pigment and total lipid contents | ||||
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