Ettlia sp. YC001 showing high growth rate and lipid content under high CO2

Yoo, Chan Yul; Choi, Gang-Guk; Kim, Sun-Chang; Oh, Hee‐Mock

doi:10.1016/j.biortech.2012.09.046

Cited by 55 publications

(24 citation statements)

References 36 publications

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“…In this study, lipid, protein and carbohydrate contents in green algae and diatoms were not affected by the cement flue gas (12-15% CO 2 ) compared to standard cultivation methods, using aeration or pure CO 2 . A moderate increase in CO 2 (5-20%) can stimulate the accumulation of lipids [56], while higher CO 2 concentrations (N 20%) can inhibit growth and decrease lipid content [57,7]. Similar results have been reported for green algae (e.g.…”

Section: Treatmentsupporting

confidence: 52%

Baltic Sea microalgae transform cement flue gas into valuable biomass

et al. 2015

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We show high feasibility of using cement industrial flue gas as CO 2 source for microalgal cultivation. The toxicity of cement flue gas (12-15% CO 2 ) on algal biomass production and composition (lipids, proteins, carbohydrates) was tested using monocultures (Tetraselmis sp., green algae, Skeletonema marinoi, diatom) and natural brackish communities. The performance of a natural microalgal community dominated by spring diatoms was compared to a highly productive diatom monoculture S. marinoi fed with flue gas or air-CO 2 mixture. Flue gas was not toxic to any of the microalgae tested. Instead we show high quality of microalgal biomass (lipids 20-30% DW, proteins 20-28% DW, carbohydrates 15-30% DW) and high production when cultivated with flue gas addition compared to CO 2 -air. Brackish Baltic Sea microalgal communities performed equally or better in terms of biomass quality and production than documented monocultures of diatom and green algae, often used in algal research and development. Hence, we conclude that microalgae should be included in biological solutions to transform waste into renewable resources in coastal waters.

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Section: Treatmentsupporting

confidence: 52%

Baltic Sea microalgae transform cement flue gas into valuable biomass

et al. 2015

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“…The freshwater microalga, Ettlia sp. YC001, used in this study was already shown to have a high growth rate and lipid productivity under high CO 2 concentrations (Yoo et al, 2013). To determine the optimal pH for the highest biomass and lipid productivity, the strain was cultivated in a continuous culture with a dilution rate of 0.2 d À1 in a 7 L photobioreactor ( Fig.…”

Section: Operation Of Continuous Culture and Ph Controlmentioning

confidence: 99%

Simple processes for optimized growth and harvest of Ettlia sp. by pH control using CO₂ and light irradiation

Yoo

Kim

et al. 2014

Biotech & Bioengineering

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Microalgae cultures show wide range of pH depending on the availability of light and CO2 for their strain specific photosynthesis. Thus, the modulation of light irradiation and CO2 supply can be applied for the pH control of microalgae cultures. The optimal pH of Ettlia sp. YC001, for phototrophic growth and auto-flocculation was investigated by controlling light irradiation and 10% CO2 supply. Ettlia sp. YC001 showed the highest biomass productivity, 96.7 mg L(-1) d(-1) , at pH 8.5. The flocculating activity of Ettlia sp. YC001 showed a sigmoid pattern with pH increase and was above 70% at pH 10.5. Based on these differentiated optimal pH regimes for the growth and flocculation, an integrated process consisting of cultivation and settling vessels was proposed. The integrated process demonstrated that high flocculation activity of Ettlia sp. YC001 could be achieved in the settling vessel with various hydraulic retention times by only irradiation of light to maintain high pH while maintaining the optimal growth in cultivation vessel with the light irradiation and CO2 supply at pH 8.5. Thus, the proposed strategy for pH control would provide a simple, cost-effective, and flexible design and operation for microalgae cultivation-harvest systems.

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“…Similarly Yoo et al, have showed that lipid productivity decreases from 80 mg/L/day to 77 mg/L/day with increase in CO 2 concentration from 5% to 10% for Ettlia sp. YC001 strain [34]. Therefore, it is clear that though biomass production is more in case of bacterial strain than that of cyanobacterial consortium, the lipid yield is more for cyanobacterial consortium than that of bacterial strain.…”

Section: Lipid Production By Microorganismsmentioning

confidence: 99%

Carbon dioxide biofixation using microorganisms and assessment of biofuel production

Upendar

Mistry

Das

et al. 2017

Env Prog and Sustain Energy

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In the present work, carbon dioxide (CO2) fixation potential of bacteria and cyanobacterial consortium was studied and compared. Serratia marcescens NCIM 2078, the chemolithotrophic bacteria, which was used in the present study, was collected from National Collection of Industrial Microorganisms (NCIM), Pune, India. The cyanobacterial consortium used was Leptolyngbya subtilis and Planktothrix agardhii. It was collected from East Kolkata Wetland (EKW), Kolkata, India, a Wetland of International Importance. Serratia marcescens NCIM 2078 and the consortium Leptolyngbya subtilis and Planktothrix agardhii were cultivated with 10%, 20%, and 30% CO2. These two microbial agents could grow at 30% CO2 and showed optimum growth at CO2 concentration of 10%. The maximum biofixation of CO2 observed was 98.32% and 94.06% for Serratia marcescens NCIM 2078 and for the consortium of Leptolyngbya subtilis and Planktothrix agardhii at 10% of CO2 concentration. Carbon dioxide showed toxic effects on both the microorganisms at high concentration and the lipid content also decreased with increased CO2 concentration. The present results indicate the efficacy of these two microbes for mitigating CO2 in the flue gases. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1594–1600, 2018

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Ettlia sp. YC001 showing high growth rate and lipid content under high CO2

Cited by 55 publications

References 36 publications

Baltic Sea microalgae transform cement flue gas into valuable biomass

Baltic Sea microalgae transform cement flue gas into valuable biomass

Simple processes for optimized growth and harvest of Ettlia sp. by pH control using CO₂ and light irradiation

Carbon dioxide biofixation using microorganisms and assessment of biofuel production

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Ettlia sp. YC001 showing high growth rate and lipid content under high CO2

Cited by 55 publications

References 36 publications

Baltic Sea microalgae transform cement flue gas into valuable biomass

Baltic Sea microalgae transform cement flue gas into valuable biomass

Simple processes for optimized growth and harvest of Ettlia sp. by pH control using CO2 and light irradiation

Carbon dioxide biofixation using microorganisms and assessment of biofuel production

Contact Info

Product

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Simple processes for optimized growth and harvest of Ettlia sp. by pH control using CO₂ and light irradiation