Journal
BIOMASS & BIOENERGY
Volume 122, Issue -, Pages 280-289Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biombioe.2019.01.033
Keywords
Microalgae; Co-culture; Lipid productivity; Algae screening; Characium; Pseudomonas
Funding
- USDA National Institute of Food and Agriculture Hatch project [FLA-FTL-005697]
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Renewable energies, such as biofuels from algae, are a promising approach to deviate from fossil fuels. Mass algae cultivation requires better control over algae culture including taking advantage of co-cultivation with growth and lipid-promoting microorganisms. Integrating co-cultures into algal biotechnology can be beneficial in achieving enhanced yields and reduced expenditures. This work uses the co-cultivation of an alga with bacteria to simultaneously increase biomass and lipid productivities in algal cultures. Growth and lipid-promoting microbial cell-free filtrates were used to test for possible effects of bacterial extracellular compounds. Our results show that both the presence of bacterial cell as well as cell-free filtrate from one particular strain of bacteria, Pseudomonas composti, promoted the increase in biomass yield and lipid within freshwater Characium sp. 46-4. These results indicate that unidentified extracellular compounds released by bacteria can affect the growth rate and lipid metabolism of algae.
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