Effects of Co-culture on Improved Productivity and Bioresource for Microalgal Biomass Using the Floc-Forming Bacteria Melaminivora Jejuensis
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Bacterial and algal floc formation was induced by inoculating three species of wastewater-derived bacteria (Melaminivora jejuensis, Comamonas flocculans, and Escherichia coli) into algal cultures (Chlorella sorokiniana). Bacterial and algal flocs formed in algal cultures inoculated with M. jejuensis and C. flocculans, and these flocs showed higher sedimentation rates than pure algal culture. The floc formed by M. jejuensis (4988.46 ± 2589.81 μm) was 10-fold larger than the floc formed by C. flocculans (488.60 ± 226.22 μm), with a three-fold higher sedimentation rate (M. jejuensis, 91.08 ± 2.32% and C. flocculans, 32.55 ± 6.33%). Biomass and lipid productivity were improved with M. jejuensis inoculation [biomass, 102.25 ± 0.35 mg/(L·day) and 57.80 ± 0.20 mg/(L·day)] compared with the productivity obtained under pure algal culture conditions [biomass, 78.00 ± 3.89 mg/(L·day) and lipids, 42.26 ± 2.11 mg/(L·day)]. Furthermore, the fatty acid composition of the biomass produced under pure algal culture conditions was mainly composed of C 16:0 (43.67%) and C 18:2 (45.99%), whereas the fatty acid composition of the biomass produced by M. jejuensis was mainly C 16:0 (31.80%), C 16:1 (24.45%), C 18:1 (20.23%), and C 18:2 (16.11%). These results suggest the possibility of developing an efficient method for harvesting microalgae using M. jejuensis and provide information on how to improve biomass productivity using floc-forming bacteria.
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Reports show the feasibility of producing bioethanol from algal biomass, particularly lipid-extracted biomass, which can be converted into simple sugars through saccharification and fermented to produce ethanol.
“Despite corn and sugarcane being the main sources of bioethanol, reports show the feasibility of producing it from algal biomass, particularly lipid-extracted biomass, which can be converted into simple sugars through saccharification and fermented to produce ethanol [77–79].”
From A Holistic Approach to Circular Bioeconomy Through the Sustainable Utilization of Microalgal Biomass for Biofuel and Other Value-Added Products (2024) · cites this paper as [78]
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- Authors
- Kim, D.-H., Yun, H.-S., Kim, Y.-S., & Kim, J.-G.
- Affiliations
- Kyungpook National University (KR)
- Corresponding author
- Kim, Young-Saeng
- Kim, Jong-Guk
- Venue
- Frontiers in Bioengineering and Biotechnology
- Publisher
- Frontiers Media SA
- Published
- 2020-12-18
- Volume
- 8
- Pages
- 588210-588210
- ISSN
- 2296-4185 (ISSN-L)
- PMC
- PMC7775480
- OpenAlex
- W3112423507
- Cited by
- 28
- References
- 70
- Citations by year
- 2026: 2 · 2025: 9 · 2024: 4 · 2023: 6 · 2022: 4 · 2021: 3
- FWCI
- 0.64
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Frontiers in Bioengineering and Biotechnology (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Research Foundation
- Kyungpook National University
- National Research Foundation of Korea (2016R1A6A1A05011910)
- Ministry of SMEs and Startups
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
- Physical Sciences › Environmental Science › Water Science and Technology › Coagulation and Flocculation Studies
- Keywords
- microalgal biomass, floc-forming bacteria, Escherichia coli, Chlorella sorokiniana, sedimentation rate, microalgae harvesting, lipid productivity, fatty acid composition
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