Marine microalgae and their associated bacteria – A study on growth promotion

Microalgae are the rich source of lipids. The interaction between algae-bacteria reveals the increased algal growth without any harmfulness from their associated bacterial consortia. Many previous investigations discussed that algae when co-cultured with bacteria reach higher cell numbers and exhibit faster growth rates. Likewise our present study aimed to focus the interaction between the green microalgae of Nannochloropsis sp, Synechocysis sp. and Pavlova sp. and their associated strains Staphylococcus simiae, Citrobacter freundii and Bacillus flexus respectively. With respective to the co - cultivation system , growth rate of algae was monitored at various incubation periods of their corresponding bacterium of 24hr, 48hr,72hr. Hence the proximate analysis of growth rate, total biomass, lipid, protein and carbohydrate were measured before and after co cultivation. Thus enhance the microalgal biomass as well as lipid content. Likewise, lipid content of Nannochloropsis sp. (39%) would increase 45.4%. after the co- cultivation experiment likely Thus aids the efficiency of microalgae utilization in biomass/biofuel production in industrial scale at short time period by the influence of extracellular substances from their associated microbes.