EFFECT OF NITROGEN STARVATION ON SOME METABOLIC ACTIVITIES OF OSCILLATORIA ACUTISSIMA KUFFERATH AND SCENEDESMUS OBLIQUUS (TURP.) KÜTZ. WITH SPECIAL REFERENCE TO INDUCED CHANGES IN FATTY ACIDS PATTERN.
Osman, M., Omar, H., Abo-Shady, A., El-Shafay, S. (2006). EFFECT OF NITROGEN STARVATION ON SOME METABOLIC ACTIVITIES OF OSCILLATORIA ACUTISSIMA KUFFERATH AND SCENEDESMUS OBLIQUUS (TURP.) KÜTZ. WITH SPECIAL REFERENCE TO INDUCED CHANGES IN FATTY ACIDS PATTERN.. EKB Journal Management System, 7(1), 67-77. doi: 10.21608/egyjs.2006.114144
Mohamed E. H. Osman; Hanan H. Omar; Atef M. Abo-Shady; Shimaa M. A. El-Shafay. "EFFECT OF NITROGEN STARVATION ON SOME METABOLIC ACTIVITIES OF OSCILLATORIA ACUTISSIMA KUFFERATH AND SCENEDESMUS OBLIQUUS (TURP.) KÜTZ. WITH SPECIAL REFERENCE TO INDUCED CHANGES IN FATTY ACIDS PATTERN.". EKB Journal Management System, 7, 1, 2006, 67-77. doi: 10.21608/egyjs.2006.114144
Osman, M., Omar, H., Abo-Shady, A., El-Shafay, S. (2006). 'EFFECT OF NITROGEN STARVATION ON SOME METABOLIC ACTIVITIES OF OSCILLATORIA ACUTISSIMA KUFFERATH AND SCENEDESMUS OBLIQUUS (TURP.) KÜTZ. WITH SPECIAL REFERENCE TO INDUCED CHANGES IN FATTY ACIDS PATTERN.', EKB Journal Management System, 7(1), pp. 67-77. doi: 10.21608/egyjs.2006.114144
Osman, M., Omar, H., Abo-Shady, A., El-Shafay, S. EFFECT OF NITROGEN STARVATION ON SOME METABOLIC ACTIVITIES OF OSCILLATORIA ACUTISSIMA KUFFERATH AND SCENEDESMUS OBLIQUUS (TURP.) KÜTZ. WITH SPECIAL REFERENCE TO INDUCED CHANGES IN FATTY ACIDS PATTERN.. EKB Journal Management System, 2006; 7(1): 67-77. doi: 10.21608/egyjs.2006.114144

EFFECT OF NITROGEN STARVATION ON SOME METABOLIC ACTIVITIES OF OSCILLATORIA ACUTISSIMA KUFFERATH AND SCENEDESMUS OBLIQUUS (TURP.) KÜTZ. WITH SPECIAL REFERENCE TO INDUCED CHANGES IN FATTY ACIDS PATTERN.

Egyptian Journal of Phycology
Article 5, Volume 7, Issue 1, 2006, Page 67-77  XML PDF (445.66 K)
Document Type: Original Article
DOI: 10.21608/egyjs.2006.114144
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Authors
Mohamed E. H. Osman; Hanan H. Omar; Atef M. Abo-Shady; Shimaa M. A. El-Shafay
Botany Department, Faculty of Science, Tanta University, Tanta, Egypt.
Abstract
Oscillatoria acutissima (cyanobacteria) and Scenedesmus obliquus (green alga) were cultured under nitrogen starvation conditions and evaluated for growth and some metabolic activities. Under nitrogen starvation condition pigments, protein, saponification values and lipase activity were decreased, while carbohydrate contents were increased for tested organisms. At the same time, iodine number increased in O. ocutissima, and decreased in S. obliquus. Infera red analysis showed reduction in the concentration of amino group in lipid materials of both organisms. However, GLC analysis cleared that nitrogen was significantly reduced in the lipid materials. The intra-cellular fatty acids of O. acutissima showed reduction in the total saturated fatty acids and increase in the total unsaturated acids, meanwhile S. obliquus recorded the opposite trend.
Keywords
Oscillatoria acutissima; Scenedesmus obliquus; Metabolic activity; Fatty acid contents
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