10.22376/ijpbs.2019.10.1.p1-12 Volume 8 Issue 1 2017 (January - March) Growth, lipids, carbohydrates as well as fatty acid compositions of a native microalga in lessThan i greaterThan Dunaliella salina lessThan /i greaterThan (Teod.) and lessThan i greaterThan Spirulina platensis lessThan /i greaterThan (Gomo.) were studied in batch culture at light intensity 100 µ mol photons m lessThan sup greaterThan -2 lessThan /sup greaterThan s lessThan sup greaterThan -1 lessThan /sup greaterThan temperature 25 ± 1 lessThan sup greaterThan o lessThan /sup greaterThan C and 16:8 h light and dark diurnal cycles. Carbohydrate content decreased with increasing concentration of Cu stress. The lipid content also showed the same scenario. Further GC-MS profiling of lipids showed various compounds separated according to their retention time in which most of the compounds were fatty acid methyl ester. With further augmentations of lipid & carbohydrate content and improved fatty acids, the native microalga strain could be a potent candidate for aqua-culture feeding and or biofuel production. AMRIT DAIYA AND GAJENDRA PAL SINGH Dunaliella salina, Spirulina platensis, lipids, carbohydrates, GC-MS profiling, Cu stress 235-244