Coproduction of lipids and carotenoids by the novel green alga Coelastrella sp. depending on cultivation conditions

Saito, Mizuki; Watanabe, Hironosuke; Sasaki, Mitsuki; Ookubo, Madoka; Yarita, Takashi; Shiraiwa, Masakazu; Asayama, Munehiko

doi:10.1016/j.btre.2022.e00769

Cited by 7 publications

(8 citation statements)

References 37 publications

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“…yielded oil to a maximum of 50% (w/w); while in another study, Coelastrella sp. was reported to contain 44% lipids of the dry cell weight (DCW) . Higher lipid and pigment content and efficient lipid extractibility suggest that Coelastrella sp.…”

Section: Resultsmentioning

confidence: 99%

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Biolubricant Synthesis by Additization and Chemical Modification from Lipid-Rich Brackish Coelastrella sp. Using a Biorefinery Approach

Khan,

Das,

Radwan

et al. 2024

ACS Sustainable Chem. Eng.

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With a sizable market share and widespread use in automotive and industrial applications, biolubricants are produced from the oils of terrestrial plants that have undergone chemical modification or additive addition. Brackish or marine microalgae utilize less arable land and have a lower freshwater footprint compared to terrestrial plants. They are thus a potential source of raw materials for the production of biolubricants. This study screened eight marine microalgae, i.e., Coelastrella sp., Chlorocystis sp., Ceatocerous sp., Neochloris sp., Picochlorum sp., Tisochrysis sp., Tetraselmis sp., and Synechococcus sp. for their lipid and pigment content as a preliminary step. Coelastrella sp., Tetraselmis sp., and Chlorocystis sp. were chosen for additional study in outdoor cultivation based on total lipid, pigments, and harvestability. Coelastrella, Tetraselmis, and Chlorocystis species had total lipid contents of 50.2, 7.6, and 9.1% (w/w), respectively. In Coelastrella sp., total carotenoids, monounsaturated fatty acid (MUFA), polyunsaturated fatty acid (PUFA), and saturated fatty acid (SFA) concentrations were 0.3, 45.8, and 51%, respectively. Based on total carotenoids, polyunsaturated fatty acid, and lipid content, Coelastrella sp. was chosen to produce biolubricants by chemical modification and addition of its lipid. Kinematic viscosities and the viscosity index of the EVA-added Coelastrella sp. biolubricant were higher than those of the chemically produced Coelastrella TMP triesters. The thermal stability of the Coelastrella biolubricant with EVA additive was higher, whereas chemically synthesized TMP triester biolubricant had considerably lower thermal stability. A 1% increase in EVA reduced the coefficient of friction of SFA biolubricant from 0.075 to 0.03 and the wear rate from 12 μ gm N −1 m −1 to 0.6 μ gm N −1 m −1 , resulting in 60% and 95% reduction in friction and wear rate, respectively, making it a potential lubricant basestock for a variety of industrial applications.

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Section: Resultsmentioning

confidence: 99%

“…was reported to contain 44% lipids of the dry cell weight (DCW). 56 Higher lipid and pigment content and efficient lipid extractibility suggest that Coelastrella sp. could be a suitable strain for producing oil-based products using a biorefinery approach.…”

Section: Coefficient Of Friction (Cof) Analysis By a Pin-on-disk Trib...mentioning

confidence: 99%

Biolubricant Synthesis by Additization and Chemical Modification from Lipid-Rich Brackish Coelastrella sp. Using a Biorefinery Approach

Khan,

Das,

Radwan

et al. 2024

ACS Sustainable Chem. Eng.

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“…Coelastrella sp. strain D3-1 has been reported to resist from pH 2 to pH 11, but the experiments were performed in different conditions to this work, mainly, after the stress treatment on a diluted medium 0.2XBG11, cells were spotted on BG11 plates and grown for 7 days (Saito et al, 2023) while in this work data was taken in liquid medium with the pH corrected. Regarding the temperature, it greatly affected the growth of Coelastrella sp.…”

Section: Discussionmentioning

confidence: 99%

“…M60 (Nayana et al, 2022) or Coelastrella sp. strain D3–1 (Saito et al, 2023) resisted temperatures of up to 50 °C. However, D14 was able to resist desiccation up to one year (the maximum time tried).…”

Section: Discussionmentioning

confidence: 99%

“…However, a heat-dry stress done in Coelastrella sp. D3–1, in which cell pellet was exposed to 42 ◦C for 3 h in a dryer, showed that the microalga was able to grow when later was spotted on BG11 plates (Saito et al, 2023). The xerotolerance that D14 showed is consistent with its original habitat, a solar panel, in which the water activity is logically low.…”

Section: Discussionmentioning

confidence: 99%

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Growth characterization and biostimulant potential ofCoelastrellasp. D14 a green microalga isolated from a solar panel

Baldanta,

Ferreira,

Gouveia

et al. 2024

Preprint

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Extremophile environments are an important source for finding microorganisms with a potential for biotechnological applications. Among these microorganisms, microalgae contribute to several sustainable processes such as wastewater treatments or nutrition. In this work it was characterized a microalga isolated from a solar panel. The morphological and phylogenetic analysis revealed that the isolate collected was a Coelastrella strain. Cultivation and stress experiments has shown that Coelastrella sp. D14 can resist a long period of desiccation and it can grow on cheap sources such as piggery wastewaters (PWW). This work reports that a Coelastrella strain displays biostimulant properties with a germination index of 123% on Lepidium sativum when D14 biomass grown at 10% piggery effluent was used. Altogether, these results suggest that this novel strain could be a good chassis for further biotechnological applications.

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Water-soluble humic acid media for sustainable biomass, lipid, and fatty acid productions of Coelastrella striolata var. multistriata strain 047

Susanti,

Purba,

Purwani

et al. 2024

Biomass Conv. Bioref.

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Coproduction of lipids and carotenoids by the novel green alga Coelastrella sp. depending on cultivation conditions

Cited by 7 publications

References 37 publications

Biolubricant Synthesis by Additization and Chemical Modification from Lipid-Rich Brackish Coelastrella sp. Using a Biorefinery Approach

Biolubricant Synthesis by Additization and Chemical Modification from Lipid-Rich Brackish Coelastrella sp. Using a Biorefinery Approach

Growth characterization and biostimulant potential ofCoelastrellasp. D14 a green microalga isolated from a solar panel

Water-soluble humic acid media for sustainable biomass, lipid, and fatty acid productions of Coelastrella striolata var. multistriata strain 047

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