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Cultivation of Green Microalgae in Bubble Column Photobioreactors and an Assay for Neutral Lipids
Published on: January 7, 2019
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Potential application of algicidal bacteria for improved lipid recovery with specific algae
Eric M Lenneman1, Ping Wang, Brett M Barney
1Department of Bioproducts and Biosystems Engineering and Biotechnology Institute, University of Minnesota, St. Paul, MN, USA.
FEMS Microbiology Letters
|March 29, 2014
Summary
Algicidal bacteria, Pseudomonas pseudoalcaligenes AD6 and Aeromonas hydrophila AD9, enhance microalgae lipid extraction. These bacteria show significant improvements in extracting lipids from Neochloris oleoabundans and Dunaliella tertiolecta.
Area of Science:
- Microbiology
- Biotechnology
- Algal Research
Background:
- Microalgae are a valuable resource for biofuels and bioproducts.
- Efficient lipid extraction is crucial for commercial viability.
- Natural algicidal bacteria offer a potential solution for algal biomass management.
Purpose of the Study:
- To evaluate algicidal bacteria for their effectiveness against commercially relevant microalgae.
- To assess the bacteria's potential to improve lipid extraction efficiency.
- To identify specific bacterial strains and their impact on lipid yields.
Main Methods:
- Isolation and identification of algicidal bacteria from wetland sediments.
- Testing bacterial algicidal activity against Neochloris oleoabundans and Dunaliella tertiolecta.
- Evaluating the effect of bacterial treatment on mild solvent lipid extraction.
Main Results:
- Two bacterial strains, Pseudomonas pseudoalcaligenes AD6 and Aeromonas hydrophila AD9, exhibited algicidal properties.
- Aeromonas hydrophila AD9 significantly increased lipid extraction from Dunaliella tertiolecta (nearly 12-fold).
- Both bacterial strains improved lipid extraction from Neochloris oleoabundans (sixfold).
Conclusions:
- Specific algicidal bacteria can enhance microalgae lipid extraction.
- Pseudomonas pseudoalcaligenes AD6 and Aeromonas hydrophila AD9 show promise for biotechnological applications.
- Bacterial-assisted lipid extraction offers a more efficient method for utilizing algal biomass.
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