Productivity and fuel quality parameters of lipids obtained from 12 species of microalgae from the northeastern region of Brazil

Calixto, Clediana Dantas; Santana, Jordana Kaline da Silva; Tibúrcio, Viviane Pereira; Pontes, Liliana de Fátima Bezerra Lira de; Sassi, Cristiane Francisca da Costa; Conceição, Marta Maria da; Sassi, Roberto

doi:10.1016/j.renene.2017.09.029

Cited by 32 publications

(12 citation statements)

References 48 publications

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“…Under optimal conditions, over 180 mg L −1 was accumulated during 12 h darkness, with 13.40% of loss in biomass, 90.14% of gain in lipid content and 64.66% of gain in lipid concentration. The result exceed lipid productivities of the most promising oleaginous microalgae under photoautotrophic culturing [2, 16, 28, 38, 40, 45], although nightly biomass loss is still inevitable. The result shows the great potential of SDEC-3M and light-NR/dark-ND batch process in application for biodiesel production.…”

Section: Discussionmentioning

confidence: 99%

Characterization and optimization of endogenous lipid accumulation in Chlorella vulgaris SDEC-3M ability to rapidly accumulate lipid for reversing nightly lipid loss

Pei

et al. 2019

Biotechnol Biofuels

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Background During inevitable light/dark cycle, lipid productivity of outdoor microalgae photoautotrophic cultivation is lowered by nightly biomass and lipid loss. To minimize, or even reverse the nightly lipid loss, it was expected that lipid accumulation would not cease, even if at night. Without relying on photosynthesis and organic matter in media, endogenous lipid accumulation that consumes energy and carbon sources derived from cells themselves, namely endogenous accumulation, is the only way for lipid production. The main aims of the present study was to characteristic endogenously accumulated lipid, confirm feasibility to reverse nightly lipid loss, and determine optimal conditions and its quality suitability for biodiesel feedstock production under stress conditions. Results Chlorella vulgaris SDEC-3M ability to rapidly accumulated lipid under stress conditions was cultivated for 12 h in darkness, and the effects of various conditions on lipid accumulation and biomass loss were analyzed. Under non-stress conditions, lipid contents dropped. Under certain stress conditions, conversely, the lipid contents were substantially improved so that net nightly endogenous lipid accumulation was observed. Under the optimal conditions (aeration mode with 0.10 vvm and 15% CO 2 , 5–10 mg L −1 of NO 3 − -N, 30–35 °C, approximate 2500 mg L −1 of biomass), the lipid content was doubled and increased lipid was approximately 180 mg L −1 . Among stress conditions, N-deficiency had the most significant effect on endogenous lipid accumulation, and the optimum results were characterized under relatively low-N concentrations. Higher consistency between loss in carbohydrate and gain in lipid confirmed accumulated lipid endogenously conversed from carbohydrate. Based on the analyses of fatty acids profiles and prediction of kinematic viscosity, specific gravity, cloud point, cetane number and iodine value, it was confirmed that the quality of lipid obtained under optimal conditions complied with biodiesel quality standards. Conclusion Via triggering endogenous lipid accumulation by stress conditions, even in darkness, SDEC-3M can synthesize enough lipid suitable for biodiesel feedstock. It implies that the lipid accumulation phase in two-phase strategy can be scheduled at night, and following biomass production stage in light, which should be a solution to improve the lipid yield and quality of large-scale outdoor photoautotrophic microalgae cultivation for biodiesel production.

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Section: Discussionmentioning

confidence: 99%

Characterization and optimization of endogenous lipid accumulation in Chlorella vulgaris SDEC-3M ability to rapidly accumulate lipid for reversing nightly lipid loss

Pei

et al. 2019

Biotechnol Biofuels

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“…The exploitation of algal biomass for commercial purposes has prompted several research groups in different countries to seek the most appropriate algal production model associated to greater biomass productivity, environmental sustainability and economic viability [26][27][28][29]. Several nations, including Brazil, have invested in this development by funding researchers to advance our knowledge in algal biotechnology.…”

Section: Investment On Algal Research In Brazilmentioning

confidence: 99%

Advances in Microalgal Research in Brazil

Matos

2021

Braz. arch. biol. technol.

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Microalgae research has attracted interest worldwide and in order to advance algal biotechnology in Brazil, government has been funding several projects. In the last 10 years, two main funds were provided by the National Council of Scientific and Technological Development (CNPq) agency to researchers in Brazil, who study the potential uses of microalgae for biomass, bioproducts and biofuels production. These funded projects addressed aspects of algal strain identification, development of algal cultivation techniques, designing photobioreactors and raceway ponds, modeling harvesting and dewatering process, maximizing biomass and oil productivities, characterizing chemical composition with different extractions systems and determining physiochemical properties of biodiesel. This review presents the state of art of algal research conducted by Brazilian institutions. Special attention is given to the recent progress on microalgal cultivation, high-value products extracted from microalgae and potential biofuels production. This review may serve as a policy instrument for planning next steps for algal research in Brazil as well as for attracting attention from international researchers who work with microalgae and would like to pursue a future partnership on algal research with Brazilian research institutions.

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“…In this sense, the use of other renewable sources such as cyanobacteria and microalgae emerges as an alternative for the production of biofuels, as these bacteria have great potential for production of oils, easy genetic modification due to their uncomplicated genome, and grow in smaller spaces and thus require fewer nutrients than existing organisms used for oil production [ 55 , 56 ].…”

Section: Cyanobacteria and Microalgae At Brazilmentioning

confidence: 99%

“…Similarly, Calixto et al [ 56 ], carried out a survey on the lipid composition of twelve marine cyanobacterial and microalgae strains from Northeastern Brazil. In particular the Synechocystis sp.…”

Section: Cyanobacteria and Microalgae At Brazilmentioning

confidence: 99%

Advances in the Biotechnological Potential of Brazilian Marine Microalgae and Cyanobacteria

Oliveira

Costa

et al. 2020

Molecules

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Due the worldwide need to improve care for the environment and people, there is a great demand for the development of new renewable, sustainable, and less polluting technologies for food, health, and environmental industries. The marine environment is one of the main areas investigated in the search for alternatives to the raw materials currently used. Thereby, cyanobacteria and marine microalgae are microorganisms that are capable of producing a diverse range of metabolites useful for their cellular maintenance, but that also represent a great biotechnological potential. Due its great potential, they have an enormous appeal in the scientific research where, the biological activity of metabolites produced by these microorganisms, such as the antioxidant action of sterols are, some examples of biotechnological applications investigated around the world. Thereby, Brazil due to its extensive biodiversity, has high potential as a raw material supplier of marine waters, researching cyanobacteria and microalgae metabolites and their applications. Thus, this rapid review intends to present some important contributions and advances from Brazilian researchers, using the biomass of Brazilian cyanobacteria and marine microalgae, in order to illustrate the value of what has already been discovered and the enormous potential of what remains unexplored so far.

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Productivity and fuel quality parameters of lipids obtained from 12 species of microalgae from the northeastern region of Brazil

Cited by 32 publications

References 48 publications

Characterization and optimization of endogenous lipid accumulation in Chlorella vulgaris SDEC-3M ability to rapidly accumulate lipid for reversing nightly lipid loss

Characterization and optimization of endogenous lipid accumulation in Chlorella vulgaris SDEC-3M ability to rapidly accumulate lipid for reversing nightly lipid loss

Advances in Microalgal Research in Brazil

Advances in the Biotechnological Potential of Brazilian Marine Microalgae and Cyanobacteria

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