Background: North east region of India is well known as biodiversity hotspot with endemic
flora and fauna. Organisms belonging to the cyanobacterial species are commonly known as blue
green algae and are found in diverse categories in the environment of north-east India. Potentials of
these cyanobacterial species are mostly unexplored. Present study aimed to isolate, identify and evaluate
the potential cyanobacterial strains for the sustainable producers of biomolecules with agricultural,
therapeutic and industrial significance.
Methods: Growth and biochemical characterization were performed with the isolated cyanobacterial
species to investigate the growth kinetics, cellular pigments (carotenoid, phycobiliprotein and chlorophyll),
protein, carbohydrate and lipid content.
Results: Three Phormidium sp., one Oscillatoria sp., and one Microcoleus sp. were isolated from the
Tripura state (North-east region of India). Results revealed that isolated Oscillatoria sp. has high lipid
(~20%), protein (~40%), and carbohydrate (~30%) yield. Further, two isolated Phormidium sp., produced
significant amount of carotenoids (~23 mg/gm dry biomass), phycobiliprotein (~20-25%) and
high protein (~55%). Microcoleus sp. produced 62% carbohydrate and 20% phycobiliprotein with significant
amount of carotenoids (~17 mg/gm dry biomass).
Conclusion: Isolated Oscillatoria sp. is the promising resource for lipid and nutritional supplement
due to high accumulated primary metabolites. Two Phormidium sp., can be used as animal and human
nutritional food supplement and also can be further investigated for pigment production at industrial
scale. Isolated Microcoleus sp. is the potential resource of carbohydrate and pigment. Isolated cyanobacterial
strains are identified as viable candidates for the industrial production of biomass as well as
other value added biomolecules.