Abstract
The cellular carbohydrate, protein and fatty acid content of three cyanobacterial strains belong to the genera Aphanocapsa sp. (NTK28) and Nostoc species (NTK29 and NTY30) isolated from cyanolichens analyzed. Among the three cyanobacterial species, Nostoc sp. (NTK 29) showed the maximum of total carbohydrate, protein and lipid content about 25, 15 and 14%, respectively. Gas chromatographic analysis showed that, three cyanobacterial isolates has an array of fatty acids. A total of 17 fatty acids both saturated and unsaturated were detected from three cyanobacterial isolates. Among these, 8 types fell under saturated and 9 types unsaturated fatty acids which comprise mono and polyunsaturated fatty acids including omega 9, omega 6 and omega 3 found in the organisms. Single fatty acid stearic acid (C18:0) was commonly present in three cyanobacterial isolates whereas, eicosedienoic acid (20: 1) omega 9 was present in single cyanobacterium Nostoc sp (NTK29).